Fenton, Missouri Weather Conditions

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Current Conditions

  • 34°
  • Clear
  • Wind: SE 5 mph
  • Humidity: 48%
  • Visibility: 10.0 miles
  • Dew Point: 16°
  • Pressure: 30.39 in. +
  • Heat Index: 30

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Click a section below for more information.

Next 12 Hours

6  pm
9  pm
12  am
3  am
6  am
Partly Cloudy
Partly Cloudy
Mostly Cloudy
Mostly Cloudy
Ice Pellets
Ice Pellets
Snow
Snow
Snow
Snow
32°
30°
30°
32°
34°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Monday
  • Partly Cloudy
  • High: 36 °
  • Low: 28 °
  • Partly Cloudy
  • Tuesday
  • Rain
  • High: 52 °
  • Low: 21 °
  • Rain
  • Wednesday
  • Chance of Snow
  • High: 30 °
  • Low: 12 °
  • Chance of Snow
  • Thursday
  • Clear
  • High: 28 °
  • Low: 10 °
  • Clear
  • Friday
  • Clear
  • High: 50 °
  • Low: 25 °
  • Clear

Forecast for Fenton, Missouri

Updated: 9:00 AM CST on March 02, 2015

  • Monday

    Partly cloudy. High of 36F. Winds less than 5 mph.

  • Monday Night

    Mostly cloudy in the evening, then overcast with ice pellets and snow. Low of 28F. Winds from the ESE at 5 to 10 mph. Chance of precipitation 60% .

  • Tuesday

    Overcast with rain, then rain showers in the afternoon. High of 52F. Winds from the South at 5 to 15 mph. Chance of rain 60%.

  • Tuesday Night

    Overcast with a chance of snow in the evening, then mostly cloudy with a chance of snow. Fog overnight. Low of 21F. Winds from the NW at 10 to 15 mph. Chance of snow 40%.

  • Wednesday

    Mostly cloudy with a chance of snow. High of 30F with a windchill as low as 7F. Breezy. Winds from the NNW at 10 to 20 mph. Chance of snow 40%.

  • Wednesday Night

    Partly cloudy in the evening, then clear. Low of 12F. Winds from the North at 10 to 15 mph.

  • Thursday

    Clear. High of 28F with a windchill as low as 1F. Winds from the NNW at 10 to 15 mph.

  • Thursday Night

    Partly cloudy in the evening, then clear. Low of 10F with a windchill as low as -2F. Winds from the ENE at 5 to 10 mph shifting to the SSE after midnight.

  • Friday

    Clear in the morning, then partly cloudy. High of 50F. Breezy. Winds from the SSW at 15 to 20 mph.

  • Friday Night

    Clear. Low of 25F with a windchill as low as 16F. Winds from the SW at 10 to 15 mph.

  • Saturday

    Clear. High of 55F. Winds from the WSW at 10 to 15 mph.

  • Saturday Night

    Partly cloudy. Low of 30F. Winds from the WSW at 5 to 10 mph shifting to the NW after midnight.

  • Sunday

    Clear. High of 48F. Winds from the NW at 5 to 15 mph.

  • Sunday Night

    Clear. Low of 34F with a windchill as low as 25F. Winds from the WSW at 5 to 15 mph.

  • Monday

    Clear. High of 50F. Breezy. Winds from the NW at 15 to 20 mph.

  • Monday Night

    Clear. Low of 30F. Winds from the West at 5 to 10 mph shifting to the SSW after midnight.

  • Tuesday

    Clear. High of 41F. Winds less than 5 mph.

  • Tuesday Night

    Clear. Low of 28F. Winds less than 5 mph.

  • Wednesday

    Clear. High of 52F. Winds less than 5 mph.

  • Wednesday Night

    Clear. Low of 32F. Winds from the ESE at 5 to 10 mph.

  • Thursday

    Clear. High of 50F. Winds from the SE at 5 to 10 mph.

  • Thursday Night

    Clear. Fog overnight. Low of 32F. Winds from the SE at 5 to 10 mph.

Severe Weather Alert Descriptions

 Special Statement  Statement as of 4:13 PM CST on March 2, 2015


... Another round of accumulating snow possible on Wednesday...

The latest forecast guidance suggests another round of snowfall
for the area on Wednesday. Early indications are that the northern
edge of the accumulating snowfall will be near the Interstate 70
corridor... with the heaviest accumulations occurring across
southeast Missouri and southern Illinois.

Its still too early to determine exact snowfalls with this storm
system... and a minor change in the location of the storm will
have a large impact on the snowfall any one location recieves.
However... there is a potential for 4 or more inches of snow south
of a Salem Missouri... Ste Genevieve line... with lesser
accumulations to the north.

This will be a potent winter weather maker for parts of southeast
Missouri and southern Illinois... and points south. Those planning
travel into these areas on Tuesday night... Wednesday... or
Wednesday night should carefullly monitor the latest forecast
information.



 Local Storm Report 



03/01/2015 0953 am

Hillsboro, Jefferson County.

Snow m5.0 inch, reported by trained spotter.





03/01/2015 1100 am

1 miles S of Herculaneum, Jefferson County.

Snow m5.8 inch, reported by amateur radio.





03/01/2015 1109 am

Imperial, Jefferson County.

Snow m5.0 inch, reported by trained spotter.





03/01/2015 1242 PM

Dittmer, Jefferson County.

Snow m6.5 inch, reported by trained spotter.





03/01/2015 0236 PM

Festus, Jefferson County.

Snow m6.0 inch, reported by trained spotter.


            Storm total




03/01/2015 0953 am

Hillsboro, Jefferson County.

Snow m5.0 inch, reported by trained spotter.





03/01/2015 1100 am

1 miles S of Herculaneum, Jefferson County.

Snow m5.8 inch, reported by amateur radio.





03/01/2015 1109 am

Imperial, Jefferson County.

Snow m5.0 inch, reported by trained spotter.





03/01/2015 1242 PM

Dittmer, Jefferson County.

Snow m6.5 inch, reported by trained spotter.





03/01/2015 0236 PM

Festus, Jefferson County.

Snow m6.0 inch, reported by trained spotter.


            Storm total




03/01/2015 0953 am

Hillsboro, Jefferson County.

Snow m5.0 inch, reported by trained spotter.





03/01/2015 1100 am

1 miles S of Herculaneum, Jefferson County.

Snow m5.8 inch, reported by amateur radio.





03/01/2015 1109 am

Imperial, Jefferson County.

Snow m5.0 inch, reported by trained spotter.





03/01/2015 1242 PM

Dittmer, Jefferson County.

Snow m6.5 inch, reported by trained spotter.





03/01/2015 0236 PM

Festus, Jefferson County.

Snow m6.0 inch, reported by trained spotter.


            Storm total




03/01/2015 0236 PM

Festus, Jefferson County.

Snow m6.0 inch, reported by trained spotter.


            Storm total





03/01/2015 0236 PM

Festus, Jefferson County.

Snow m6.0 inch, reported by trained spotter.


            Storm total





03/01/2015 1242 PM

Dittmer, Jefferson County.

Snow m6.5 inch, reported by trained spotter.






03/01/2015 1242 PM

Dittmer, Jefferson County.

Snow m6.5 inch, reported by trained spotter.






03/01/2015 1242 PM

Dittmer, Jefferson County.

Snow m6.5 inch, reported by trained spotter.






03/01/2015 1242 PM

Dittmer, Jefferson County.

Snow m6.5 inch, reported by trained spotter.






03/01/2015 1100 am

1 miles S of Herculaneum, Jefferson County.

Snow m5.8 inch, reported by amateur radio.






03/01/2015 1100 am

1 miles S of Herculaneum, Jefferson County.

Snow m5.8 inch, reported by amateur radio.






03/01/2015 1109 am

Imperial, Jefferson County.

Snow m5.0 inch, reported by trained spotter.






03/01/2015 1109 am

Imperial, Jefferson County.

Snow m5.0 inch, reported by trained spotter.






03/01/2015 0953 am

Hillsboro, Jefferson County.

Snow m5.0 inch, reported by trained spotter.






03/01/2015 0953 am

Hillsboro, Jefferson County.

Snow m5.0 inch, reported by trained spotter.






03/01/2015 0830 am

Hematite, Jefferson County.

Snow m6.0 inch, reported by trained spotter.






03/01/2015 0830 am

Hematite, Jefferson County.

Snow m6.0 inch, reported by trained spotter.






03/01/2015 0823 am

Festus, Jefferson County.

Snow m5.8 inch, reported by trained spotter.






03/01/2015 0823 am

Festus, Jefferson County.

Snow m5.8 inch, reported by trained spotter.






03/01/2015 0722 am

Hillsboro, Jefferson County.

Snow e6.0 inch, reported by trained spotter.


            Snow has stopped at this time.





03/01/2015 0722 am

Hillsboro, Jefferson County.

Snow e6.0 inch, reported by trained spotter.


            Snow has stopped at this time.





03/01/2015 0707 am

Herculaneum, Jefferson County.

Snow m6.0 inch, reported by trained spotter.






03/01/2015 0707 am

Herculaneum, Jefferson County.

Snow m6.0 inch, reported by trained spotter.






03/01/2015 0639 am

Herculaneum, Jefferson County.

Heavy snow m6.0 inch, reported by trained spotter.


            Still snowing





03/01/2015 0639 am

Herculaneum, Jefferson County.

Heavy snow m6.0 inch, reported by trained spotter.


            Still snowing





03/01/2015 1217 am

Imperial, Jefferson County.

Snow e6.0 inch, reported by public.






03/01/2015 1217 am

Imperial, Jefferson County.

Snow e6.0 inch, reported by public.






02/28/2015 1121 PM

Cedar Hill, Jefferson County.

Snow m4.5 inch, reported by public.






02/28/2015 1121 PM

Cedar Hill, Jefferson County.

Snow m4.5 inch, reported by public.






02/28/2015 1125 PM

Festus, Jefferson County.

Snow m5.0 inch, reported by trained spotter.






02/28/2015 1125 PM

Festus, Jefferson County.

Snow m5.0 inch, reported by trained spotter.






02/28/2015 1125 PM

2 miles S of Pevely, Jefferson County.

Snow m5.5 inch, reported by trained spotter.






02/28/2015 1125 PM

2 miles S of Pevely, Jefferson County.

Snow m5.5 inch, reported by trained spotter.






02/28/2015 1107 PM

Pevely, Jefferson County.

Heavy snow m6.0 inch, reported by public.






02/28/2015 1107 PM

Pevely, Jefferson County.

Heavy snow m6.0 inch, reported by public.






02/28/2015 1049 PM

Hillsboro, Jefferson County.

Heavy snow m6.0 inch, reported by broadcast media.






02/28/2015 1049 PM

Hillsboro, Jefferson County.

Heavy snow m6.0 inch, reported by broadcast media.






02/28/2015 1015 PM

Hillsboro, Jefferson County.

Snow m5.5 inch, reported by trained spotter.






02/28/2015 1015 PM

Hillsboro, Jefferson County.

Snow m5.5 inch, reported by trained spotter.






02/28/2015 1021 PM

Hematite, Jefferson County.

Snow m5.0 inch, reported by trained spotter.


            Some sleet mixing in.





02/28/2015 1021 PM

Hematite, Jefferson County.

Snow m5.0 inch, reported by trained spotter.


            Some sleet mixing in.





02/28/2015 0911 PM

Imperial, Jefferson County.

Snow m4.8 inch, reported by public.






02/28/2015 0911 PM

Imperial, Jefferson County.

Snow m4.8 inch, reported by public.






02/28/2015 0912 PM

De Soto, Jefferson County.

Snow m5.5 inch, reported by public.






02/28/2015 0912 PM

De Soto, Jefferson County.

Snow m5.5 inch, reported by public.






02/28/2015 0900 PM

High ridge, Jefferson County.

Snow m3.3 inch, reported by trained spotter.






02/28/2015 0900 PM

High ridge, Jefferson County.

Snow m3.3 inch, reported by trained spotter.






02/28/2015 0830 PM

1 miles W of Herculaneum, Jefferson County.

Snow e5.0 inch, reported by trained spotter.






02/28/2015 0830 PM

1 miles W of Herculaneum, Jefferson County.

Snow e5.0 inch, reported by trained spotter.






02/28/2015 0849 PM

High ridge, Jefferson County.

Snow m3.0 inch, reported by trained spotter.






02/28/2015 0849 PM

High ridge, Jefferson County.

Snow m3.0 inch, reported by trained spotter.






02/28/2015 0818 PM

Festus, Jefferson County.

Snow m4.5 inch, reported by broadcast media.






02/28/2015 0818 PM

Festus, Jefferson County.

Snow m4.5 inch, reported by broadcast media.






02/28/2015 0800 PM

Festus, Jefferson County.

Snow m4.0 inch, reported by trained spotter.






02/28/2015 0800 PM

Festus, Jefferson County.

Snow m4.0 inch, reported by trained spotter.






02/28/2015 0810 PM

De Soto, Jefferson County.

Snow m5.0 inch, reported by public.






02/28/2015 0810 PM

De Soto, Jefferson County.

Snow m5.0 inch, reported by public.






02/28/2015 0730 PM

Pevely, Jefferson County.

Snow e4.0 inch, reported by trained spotter.






02/28/2015 0658 PM

Herculaneum, Jefferson County.

Snow m3.5 inch, reported by trained spotter.






02/28/2015 0645 PM

Imperial, Jefferson County.

Snow m2.3 inch, reported by trained spotter.






02/28/2015 0730 PM

Pevely, Jefferson County.

Snow e4.0 inch, reported by trained spotter.






02/28/2015 0627 PM

Arnold, Jefferson County.

Snow e2.8 inch, reported by public.






02/28/2015 0715 PM

Arnold, Jefferson County.

Snow m3.2 inch, reported by public.






02/28/2015 0730 PM

Pevely, Jefferson County.

Snow e4.0 inch, reported by trained spotter.






02/28/2015 0730 PM

Pevely, Jefferson County.

Snow e4.0 inch, reported by trained spotter.






02/28/2015 0645 PM

Imperial, Jefferson County.

Snow m2.3 inch, reported by trained spotter.






02/28/2015 0636 PM

De Soto, Jefferson County.

Snow m3.0 inch, reported by public.






02/28/2015 0627 PM

Arnold, Jefferson County.

Snow e2.8 inch, reported by public.






02/28/2015 0622 PM

3 miles se of Hematite, Jefferson County.

Snow m2.5 inch, reported by trained spotter.






02/28/2015 0725 PM

Herculaneum, Jefferson County.

Snow m3.8 inch, reported by trained spotter.






02/28/2015 0725 PM

Herculaneum, Jefferson County.

Snow m3.8 inch, reported by trained spotter.






02/28/2015 0718 PM

De Soto, Jefferson County.

Snow m4.3 inch, reported by public.






02/28/2015 0718 PM

De Soto, Jefferson County.

Snow m4.3 inch, reported by public.






02/28/2015 0715 PM

Arnold, Jefferson County.

Snow m3.2 inch, reported by public.






02/28/2015 0715 PM

Arnold, Jefferson County.

Snow m3.2 inch, reported by public.






02/28/2015 0622 PM

3 miles se of Hematite, Jefferson County.

Snow m2.5 inch, reported by trained spotter.






02/28/2015 0658 PM

Herculaneum, Jefferson County.

Snow m3.5 inch, reported by trained spotter.






02/28/2015 0658 PM

Herculaneum, Jefferson County.

Snow m3.5 inch, reported by trained spotter.






02/28/2015 0537 PM

High ridge, Jefferson County.

Snow m1.5 inch, reported by trained spotter.






02/28/2015 0528 PM

Herculaneum, Jefferson County.

Snow m1.8 inch, reported by trained spotter.






02/28/2015 0514 PM

Herculaneum, Jefferson County.

Snow m1.0 inch, reported by trained spotter.






02/28/2015 0500 PM

Herculaneum, Jefferson County.

Snow m1.3 inch, reported by trained spotter.






02/28/2015 0622 PM

3 miles se of Hematite, Jefferson County.

Snow m2.5 inch, reported by trained spotter.






02/28/2015 0636 PM

De Soto, Jefferson County.

Snow m3.0 inch, reported by public.






02/28/2015 0636 PM

De Soto, Jefferson County.

Snow m3.0 inch, reported by public.






02/28/2015 0627 PM

Arnold, Jefferson County.

Snow e2.8 inch, reported by public.






02/28/2015 0627 PM

Arnold, Jefferson County.

Snow e2.8 inch, reported by public.






02/28/2015 0503 PM

De Soto, Jefferson County.

Snow m1.3 inch, reported by public.






02/28/2015 0622 PM

3 miles se of Hematite, Jefferson County.

Snow m2.5 inch, reported by trained spotter.






02/28/2015 0622 PM

3 miles se of Hematite, Jefferson County.

Snow m2.5 inch, reported by trained spotter.






02/28/2015 0436 PM

Pevely, Jefferson County.

Snow m1.3 inch, reported by public.






02/28/2015 0537 PM

High ridge, Jefferson County.

Snow m1.5 inch, reported by trained spotter.






02/28/2015 0537 PM

High ridge, Jefferson County.

Snow m1.5 inch, reported by trained spotter.






02/28/2015 0528 PM

Herculaneum, Jefferson County.

Snow m1.8 inch, reported by trained spotter.






02/28/2015 0528 PM

Herculaneum, Jefferson County.

Snow m1.8 inch, reported by trained spotter.






02/28/2015 0514 PM

Herculaneum, Jefferson County.

Snow m1.0 inch, reported by trained spotter.






02/28/2015 0514 PM

Herculaneum, Jefferson County.

Snow m1.0 inch, reported by trained spotter.






02/28/2015 0500 PM

Herculaneum, Jefferson County.

Snow m1.3 inch, reported by trained spotter.






02/28/2015 0500 PM

Herculaneum, Jefferson County.

Snow m1.3 inch, reported by trained spotter.






02/28/2015 0503 PM

De Soto, Jefferson County.

Snow m1.3 inch, reported by public.






02/28/2015 0503 PM

De Soto, Jefferson County.

Snow m1.3 inch, reported by public.






02/28/2015 0436 PM

Pevely, Jefferson County.

Snow m1.3 inch, reported by public.






02/28/2015 0436 PM

Pevely, Jefferson County.

Snow m1.3 inch, reported by public.






02/28/2015 0340 PM

De Soto, Jefferson County.

Snow m1.0 inch, reported by public.






02/28/2015 0340 PM

De Soto, Jefferson County.

Snow m1.0 inch, reported by public.





Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: San Luis Trails, Fenton, MO

Updated: 5:03 PM CST

Temperature: 32.8 °F Dew Point: 18 °F Humidity: 54% Wind: ESE at 5.0 mph Pressure: 30.32 in Hourly Precipitation: 0.00 in Windchill: 28 °F Graphs

Location: Hawkins/Smizer Mill, Fenton, MO

Updated: 5:03 PM CST

Temperature: 33.9 °F Dew Point: 22 °F Humidity: 60% Wind: Calm Pressure: 30.37 in Hourly Precipitation: 0.01 in Windchill: 34 °F Graphs

Location: Bent Tree Trails, Fenton, MO

Updated: 4:50 PM CST

Temperature: 35.1 °F Dew Point: 19 °F Humidity: 52% Wind: SSW at 4.3 mph Pressure: 30.07 in Hourly Precipitation: - Windchill: 31 °F Graphs

Location: St. Louis, MO

Updated: 5:03 PM CST

Temperature: 33.7 °F Dew Point: 21 °F Humidity: 59% Wind: ENE at 5.0 mph Pressure: 30.29 in Hourly Precipitation: 0.00 in Windchill: 29 °F Graphs

Location: Arnold, MO

Updated: 5:00 PM CST

Temperature: 32.8 °F Dew Point: 22 °F Humidity: 65% Wind: Calm Pressure: 30.38 in Hourly Precipitation: 0.01 in Windchill: 33 °F Graphs

Location: Saint Louis County, Saint Louis County, MO

Updated: 5:00 PM CST

Temperature: 33.4 °F Dew Point: 21 °F Humidity: 60% Wind: East at 1.0 mph Pressure: 30.43 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: APRSWXNET Sunset Hills MO US, Saint Louis, MO

Updated: 4:28 PM CST

Temperature: 33 °F Dew Point: 20 °F Humidity: 59% Wind: ENE at 1 mph Pressure: 30.40 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: High Ridge Fire District House #1, High Ridge, MO

Updated: 5:01 PM CST

Temperature: 34.3 °F Dew Point: 21 °F Humidity: 58% Wind: ESE at 3.0 mph Pressure: 30.36 in Hourly Precipitation: 0.01 in Windchill: 34 °F Graphs

Location: ARNOLD, Arnold, MO

Updated: 4:50 PM CST

Temperature: 33.1 °F Dew Point: - Humidity: 49% Wind: North at - Pressure: 29.68 in Hourly Precipitation: - Windchill: 33 °F Graphs

Location: Big Bend and I-270, Kirkwood, MO

Updated: 5:01 PM CST

Temperature: 33.2 °F Dew Point: 20 °F Humidity: 58% Wind: ESE at 2.0 mph Pressure: 30.37 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: Twin Oaks, Twin Oaks, MO

Updated: 5:00 PM CST

Temperature: 33.8 °F Dew Point: 19 °F Humidity: 55% Wind: SE at 4.2 mph Pressure: 30.27 in Hourly Precipitation: - Windchill: 30 °F Graphs

Location: APRSWXNET Sappington MO US, Saint Louis, MO

Updated: 4:26 PM CST

Temperature: 34 °F Dew Point: 20 °F Humidity: 56% Wind: Calm Pressure: 30.40 in Hourly Precipitation: 0.01 in Windchill: 34 °F Graphs

Location: Arnold # 1, Arnold, MO

Updated: 4:54 PM CST

Temperature: 32.9 °F Dew Point: 18 °F Humidity: 54% Wind: SE at 9.8 mph Pressure: 30.42 in Hourly Precipitation: - Windchill: 25 °F Graphs

Location: Rock Creek Terrace, High Ridge, MO

Updated: 5:03 PM CST

Temperature: 30.9 °F Dew Point: 19 °F Humidity: 60% Wind: Calm Pressure: 30.31 in Hourly Precipitation: 0.00 in Windchill: 31 °F Graphs

Location: Manchester, MO, Manchester, MO

Updated: 5:00 PM CST

Temperature: 33.3 °F Dew Point: 19 °F Humidity: 57% Wind: SSE at 2.0 mph Pressure: 30.42 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: Crest Ave. Kirkwood MO, St. Louis, MO

Updated: 5:02 PM CST

Temperature: 36.1 °F Dew Point: 22 °F Humidity: 55% Wind: SSW at 3.2 mph Pressure: 30.32 in Hourly Precipitation: - Windchill: 34 °F Graphs

Location: Oakville, Providence Pointe, Oakville, MO

Updated: 5:03 PM CST

Temperature: 32.9 °F Dew Point: 20 °F Humidity: 60% Wind: ESE at 12.0 mph Pressure: 30.43 in Hourly Precipitation: 0.00 in Windchill: 24 °F Graphs

Location: Arbor Valley, Ballwin, MO

Updated: 5:03 PM CST

Temperature: 34.2 °F Dew Point: 21 °F Humidity: 57% Wind: Calm Pressure: 30.41 in Hourly Precipitation: 0.00 in Windchill: 34 °F Graphs

Location: Gabriel Drive, Kirkwood, MO

Updated: 2:25 PM CST

Temperature: 35.4 °F Dew Point: 22 °F Humidity: 58% Wind: North at - Pressure: 30.53 in Hourly Precipitation: - Windchill: 35 °F Graphs

Location: Arnold, Arnold, MO

Updated: 4:53 PM CST

Temperature: 33.4 °F Dew Point: 22 °F Humidity: 62% Wind: Calm Pressure: 30.38 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: Essex and Geyer, St. Louis, MO

Updated: 4:57 PM CST

Temperature: 34.5 °F Dew Point: 21 °F Humidity: 57% Wind: Calm Pressure: 30.18 in Hourly Precipitation: - Windchill: 34 °F Graphs

Location: Crestwood, Crestwood, MO

Updated: 4:55 PM CST

Temperature: 34.3 °F Dew Point: 22 °F Humidity: 59% Wind: ENE at 3.2 mph Pressure: 30.08 in Hourly Precipitation: - Windchill: 32 °F Graphs

Location: East Madison, Kirkwood, MO, Kirkwood, MO

Updated: 5:03 PM CST

Temperature: 33.3 °F Dew Point: 20 °F Humidity: 57% Wind: Calm Pressure: 30.42 in Hourly Precipitation: 0.01 in Windchill: 33 °F Graphs

Location: APRSWXNET Arnold MO US, Sulphur Springs, MO

Updated: 4:23 PM CST

Temperature: 33 °F Dew Point: 22 °F Humidity: 63% Wind: Calm Pressure: 30.39 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: Glan Tai Estates, Ballwin, MO

Updated: 5:03 PM CST

Temperature: 34.5 °F Dew Point: 13 °F Humidity: 40% Wind: ESE at 2.5 mph Pressure: 30.32 in Hourly Precipitation: 0.00 in Windchill: 34 °F Graphs

Location: Olde Mill Estates, Byrnes Mill, MO

Updated: 5:03 PM CST

Temperature: 33.3 °F Dew Point: 14 °F Humidity: 44% Wind: SE at 4.5 mph Pressure: 30.42 in Hourly Precipitation: 0.00 in Windchill: 29 °F Graphs

Location: Westglen Village, Ballwin, MO

Updated: 5:03 PM CST

Temperature: 32.8 °F Dew Point: 20 °F Humidity: 60% Wind: SE at 3.0 mph Pressure: 30.39 in Hourly Precipitation: 0.01 in Windchill: 33 °F Graphs

Location: Arrowhead STL County, Saint Louis, MO

Updated: 4:50 PM CST

Temperature: 34.7 °F Dew Point: 18 °F Humidity: 50% Wind: ESE at 2.2 mph Pressure: 30.43 in Hourly Precipitation: - Windchill: 35 °F Graphs

Location: BUCKLEY MEADOWS 4, Saint Louis, MO

Updated: 4:48 PM CST

Temperature: 34.0 °F Dew Point: 20 °F Humidity: 57% Wind: NNE at 3.2 mph Pressure: 30.16 in Hourly Precipitation: - Windchill: 31 °F Graphs

Location: South County, Affton, MO

Updated: 5:03 PM CST

Temperature: 33.1 °F Dew Point: 21 °F Humidity: 61% Wind: SSE at 4.0 mph Pressure: 30.26 in Hourly Precipitation: 0.00 in Windchill: 29 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service St Louis MO 
350 PM CST Mon Mar 2 2015 


Short term: (through late tonight) 
issued at 350 PM CST Mon Mar 2 2015 


Interesting forecast for tonight, as return flow develops in the 
wake of the retreating surface ridge. Resultant warm air advection/lift and 
moisture return should mean precipitation threat ramping up as the 
evening progresses, generally right over the County Warning Area and in the 
residually cold and relatively dry low level air mass. Soundings over 
the northeast half of the County Warning Area have a produced warm wedge aloft (as 
much as +5c around 850mb) with low levels remaining below freezing. 
With the above in mind, the key to the forecast is how rapidly 
surface temperatures will rebound after a brief bit of cooling this 
evening. Low level warm advection should also be attempting to push 
surface temps above freezing with time, but think that this will be 
a rather slow process with the existing snow cover and believe that 
the evaporative cooling that occurs once the precip starts may 
temporarly retard the slow northward push of the warmer air. In our 
far north, evaporative cooling processes are likely to cause a bit 
of sleet and perhaps even some snow to occur along with the freezing 
rain. 


Although quantitative precipitation forecast will be quite light, am concerned about the below 
freezing surface temps and the cold ground causing icing conditions 
on untreated pavement. Based on this reasoning, have opted to issue 
a Winter Weather Advisory for about the northeast half of the County Warning Area 
(along and north of a Mexico-St Louis-Salem Illinois line), where the 
coldest surface temps and slightly higher quantitative precipitation forecast will be co-located. 
Uncertain as to exactly when the precip will start, but think the 
"heaviest" will likely be during the overnight hours so will begin 
the advisory at 06z. Will run it long enough to the morning rush 
hour...14z Tuesday. 


Obviously, additions and/or deletions to the advisory area may be 
needed as precip and temp trends become a bit more clear. 


Truett 


Long term: (tuesday through next monday) 
issued at 350 PM CST Mon Mar 2 2015 


(tuesday-thursday) 


Once the freezing rain threat ends early, primary forecast concern 
on Tuesday is pop trends, as warm advection continues lift and 
moisture transport into the mid-Mississippi Valley. Hard to get a 
handle on exact precip trends as lift is rather broad and somewhat 
unfocused, but there does seem to be some model consensus that 
highest pops will become focused over the southeast half of the County Warning Area 
heading into the afternoon and early evening, with the strongest 
moisture advection and lift along and ahead of approaching cold 
front. Instability looks even more meager than before, so have 
removed thunder from forecast. 


Winter weather concerns return to the forecast Tuesday night and 
Wednesday as next round of cold Canadian air undercuts energetic 
southwest flow aloft. The rain over the southeast half of the County Warning Area 
will gradually change over to snow across the southeast half of the 
County Warning Area as the low level cloud air deepens, and by Wednesday morning 
thermal profiles support all snow across the County Warning Area. 


All of the synoptic guidance suggests a potent shortwave ejecting 
out of the longwave trof over the southern rockes and pushing into 
the Southern Plains during the day on Wednesday. Resultant warm air advection over 
the top of the deepening cold air to our south is expected to 
produce a band of heavy precip from Arkansas into the lower Ohio River 
valley. Southern sections of our County Warning Area will be on the northern 
fringes of this heavier precip. The last 2 days the NAM has been 
the northern outlier with this band of precip and this trend 
continued with the 12z run...so have continued to trend forecast to 
the more southward solutions of the GFS, Gem and European model (ecmwf). 


Early indications are that snow accumulations of 4-6 inches will be 
possible in our far southern areas, but a very slight shift in the 
track of the system is going to have a huge impact on exact 
amounts. Coordinated the potential for a Winter Storm Watch, but 
since the system is still 2 days away opted to wait another forecast 
cycle to see if we can get a better handle on the northern fringes 
of the system. However, snow potential will be highlighted in the 
severe weather potential statement and an Special Weather Statement. 


Current timing of shortwave is such that precip should wind down 
rapidly on Wednesday evening across the south. Secondary surge of 
colder air in the wake of the shortwave should mean clear, dry and 
cold weather heading into Thursday. 


(Friday through monday) 


Surface ridge to move to the south allowing southerly winds to 
return to the region Thursday night. After a cold start Friday 
morning in the single digits to upper teens, temperatures to 
moderate through the extended with highs in the mid 30s to mid 40s 
Friday, rising into the 40s and 50s for the rest of the weekend and 
into early next week. Dry conditions to prevail through the period. 


Truett/Byrd 


&& 


Aviation: (for the 18z tafs through 18z Tuesday afternoon) 
issued at 1212 PM CST Mon Mar 2 2015 


Mid and high clouds to prevail today with winds from the east. 
Next weather system to approach region tonight with cigs gradually 
lowering. With onset of precipitation will see cigs lower to IFR. 
Precip to start off as light freezing rain then transition to rain 
between 11z-13z Tuesday as warmer air continues to advect north 
into region as winds veer and pickup from the south. 


Specifics for kstl: 
mid and high clouds to prevail today with winds from the east. 
Next weather system to approach region tonight with cigs gradually 
lowering. With onset of precipitation around 07z Tuesday will see cigs 
lower to IFR. Precip to start off as light freezing rain then 
transition to rain around 11z Tuesday as warmer air continues to 
advect north into region as winds veer and pickup from the south. 
Cold front to move through Metro area around 22z Tuesday as winds 
veer to the west. Not sure on coverage of precipitation with 
frontal boundary, so just added vcnty shower mention after 22z Tuesday. 


Byrd 


&& 


Preliminary point temperatures/pops: 
Saint Louis 29 50 20 23 / 60 70 50 40 
Quincy 27 41 13 19 / 70 70 10 10 
Columbia 32 48 18 24 / 50 50 20 30 
Jefferson City 32 50 20 24 / 50 50 20 40 
Salem 27 45 23 26 / 70 90 60 50 
Farmington 31 49 23 25 / 70 80 70 60 


&& 


Lsx watches/warnings/advisories: 
MO...Winter Weather Advisory from midnight tonight to 8 am CST 
Tuesday for Audrain MO-Knox MO-Lewis MO-Lincoln MO-Marion 
MO-Monroe MO-Montgomery MO-Pike MO-Ralls MO-Shelby MO-St. 
Charles MO-St. Louis city MO-St. Louis MO-Warren MO. 


Illinois...Winter Weather Advisory from midnight tonight to 8 am CST 
Tuesday for Adams Illinois-Bond Illinois-Brown Illinois-Calhoun Illinois-Clinton Illinois- 
Fayette Illinois-Greene Illinois-Jersey Illinois-Macoupin Illinois-Madison Illinois- 
Marion Illinois-Montgomery Illinois-Pike IL-St. Clair Illinois. 


&& 


$$ 


Weather forecast office lsx 



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