Saint Louis, Missouri Weather Conditions

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Current Conditions

  • 76°
  • Scattered Clouds
  • Wind: Calm
  • Humidity: 76%
  • Visibility: 10.0 miles
  • Dew Point: 68°
  • Pressure: 29.96 in. +

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Next 12 Hours

10  pm
1  am
4  am
7  am
10  am
Partly Cloudy
Partly Cloudy
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
77°
72°
72°
68°
81°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Wednesday
  • Chance of a Thunderstorm
  • High: 90 °
  • Low: 77 °
  • Chance of T-Storms
  • Thursday
  • Partly Cloudy
  • High: 93 °
  • Low: 77 °
  • Partly Cloudy
  • Friday
  • Thunderstorm
  • High: 91 °
  • Low: 68 °
  • T-Storms
  • Saturday
  • Chance of a Thunderstorm
  • High: 77 °
  • Low: 59 °
  • Chance of T-Storms
  • Sunday
  • Partly Cloudy
  • High: 75 °
  • Low: 55 °
  • Partly Cloudy

Forecast for Saint Louis, Missouri

Updated: 10:00 PM CDT on September 02, 2014

  • Tuesday

    Overcast with a chance of rain in the morning, then partly cloudy. High of 86F. Winds from the WNW at 5 to 10 mph. Chance of rain 20%.

  • Tuesday Night

    Partly cloudy in the evening, then clear. Low of 68F. Winds less than 5 mph.

  • Wednesday

    Clear in the morning, then partly cloudy with a chance of a thunderstorm and a chance of rain. High of 90F with a heat index of 95F. Winds from the SSE at 5 to 10 mph. Chance of rain 40%.

  • Wednesday Night

    Partly cloudy with a chance of a thunderstorm and a chance of rain. Low of 77F. Winds from the SSE at 5 to 10 mph. Chance of rain 20%.

  • Thursday

    Partly cloudy. High of 93F with a heat index of 102F. Winds from the South at 10 to 15 mph.

  • Thursday Night

    Partly cloudy. Low of 77F. Winds from the SSW at 5 to 10 mph.

  • Friday

    Partly cloudy with a chance of a thunderstorm and a chance of rain. High of 91F. Winds from the West at 5 to 10 mph. Chance of rain 50%.

  • Friday Night

    Overcast with thunderstorms, then a chance of a thunderstorm and rain after midnight. Fog overnight. Low of 68F. Winds from the North at 5 to 10 mph. Chance of rain 60% with rainfall amounts near 0.2 in. possible.

  • Saturday

    Overcast with a chance of a thunderstorm and rain. Fog early. High of 77F. Winds from the North at 5 to 10 mph. Chance of rain 40%.

  • Saturday Night

    Overcast with a chance of rain. Low of 59F. Winds from the NNE at 5 to 10 mph. Chance of rain 40%.

  • Sunday

    Clear in the morning, then partly cloudy. High of 75F. Winds from the NNE at 5 to 10 mph.

  • Sunday Night

    Partly cloudy. Low of 55F. Winds from the ENE at 5 to 10 mph.

  • Monday

    Partly cloudy. High of 82F. Winds less than 5 mph.

  • Monday Night

    Mostly cloudy. Low of 66F. Winds from the ESE at 5 to 10 mph.

  • Tuesday

    Overcast with a chance of a thunderstorm. High of 86F. Winds from the SSE at 5 to 10 mph. Chance of rain 40%.

  • Tuesday Night

    Overcast with a chance of a thunderstorm. Fog overnight. Low of 70F. Winds from the South at 5 to 10 mph. Chance of rain 70% with rainfall amounts near 0.6 in. possible.

  • Wednesday

    Overcast with a chance of a thunderstorm. High of 91F. Winds from the SSW at 5 to 10 mph. Chance of rain 50%.

  • Wednesday Night

    Mostly cloudy with a chance of a thunderstorm. Fog overnight. Low of 66F. Winds less than 5 mph. Chance of rain 50% with rainfall amounts near 0.4 in. possible.

  • Thursday

    Mostly cloudy with a chance of a thunderstorm. High of 90F. Winds less than 5 mph. Chance of rain 40%.

  • Thursday Night

    Partly cloudy. Fog overnight. Low of 61F. Winds less than 5 mph.

  • Friday

    Partly cloudy with a chance of a thunderstorm. High of 86F. Winds less than 5 mph. Chance of rain 50%.

  • Friday Night

    Partly cloudy with a chance of a thunderstorm. Fog overnight. Low of 59F. Winds less than 5 mph. Chance of rain 40%.

  • Saturday

    Clear with a chance of a thunderstorm. High of 86F. Winds less than 5 mph. Chance of rain 20%.

  • Saturday Night

    Clear. Fog overnight. Low of 59F. Winds less than 5 mph.

Severe Weather Alert Descriptions

 Record Report  Statement as of 02:51 am CDT on September 02, 2014


... Record daily maximum rainfall set at Columbia ASOS...

a record rainfall of 4.5 inch(es) was set at Columbia ASOS
yesterday. This breaks the old record of 4.15 set in 1931.




 Local Storm Report 



09/01/2014 1107 PM

St. Louis, St Louis city County.

Hail e1.75 inch, reported by trained spotter.


            New Ballwin and Big Bend.





09/01/2014 1107 PM

St. Louis, St Louis city County.

Hail e1.75 inch, reported by trained spotter.


            New Ballwin and Big Bend.





09/01/2014 1054 PM

St. Louis, St Louis city County.

Hail e1.00 inch, reported by trained spotter.


            Big Bend at Sulfer Springs Road.




 Public Information Statement  Statement as of 3:45 PM CDT on September 2, 2014


... NWS damage survey for 09/01/2014 tornado event...
... EF-1 tornado confirmed at House Springs Missouri...

.Reference tornado...

Rating: EF-1
estimated peak wind: 110 mph
path length /statute/: 6.4 miles
path width /maximum/: 60 yards
fatalities: 0
injuries: 0

Start date: sep_01_2014
start time: 1043 PM CDT
start location: 5 miles west of House Springs, MO
start lat/lon: 38.4299_/_-90.6635

End date: sep_01_2014
end time: 1055 PM CDT
end location: 1 mile east of House Springs, MO
end_lat/lon: 38.4246_/_-90.5509

Survey_summary: the maximum damage occurred at hood's discount
store located at the intersection of State Highway 30 and County
Highway W... where a quarter of the roof was torn off... the deck
was uplifted... and air conditioning units were moved. Elsewhere
along the damage path... trees were snapped and were classified as
a mix of EF-0 and EF-1 damage.

Ef scale: the Enhanced Fujita scale classifies
tornadoes into the following categories.

EF0... weak... ... 65 to 85 mph
EF1... weak... ... 86 to 110 mph
EF2... strong... .111 to 135 mph
EF3... strong... .136 to 165 mph
EF4... violent... 166 to 200 mph
EF5... violent... >200 mph

Note:
the information in this statement is preliminary and subject to
change pending final review of the event and publication in
NWS storm data.



Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Branch Street, St. Louis, MO

Updated: 8:50 PM CDT

Temperature: 79.9 °F Dew Point: - Humidity: 63% Wind: North at - Pressure: 29.50 in Hourly Precipitation: - Heat Index: 82 °F Graphs

Location: BLAIR STREET, St. Louis, MO

Updated: 8:50 PM CDT

Temperature: 78.3 °F Dew Point: - Humidity: 73% Wind: North at - Pressure: 29.43 in Hourly Precipitation: - Heat Index: 81 °F Graphs

Location: Shaw/Tower Grove, St. Louis, MO

Updated: 8:57 PM CDT

Temperature: 73.4 °F Dew Point: 65 °F Humidity: 76% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: 74 °F Graphs

Location: Forest Park, St. Louis, MO

Updated: 8:50 PM CDT

Temperature: 79.0 °F Dew Point: - Humidity: 66% Wind: North at - Pressure: 29.38 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: EAST GRANITE, Granite City, IL

Updated: 8:53 PM CDT

Temperature: 74.1 °F Dew Point: 68 °F Humidity: 81% Wind: Calm Pressure: 29.95 in Hourly Precipitation: - Heat Index: 74 °F Graphs

Location: MesoWest I -55/64/70 @ Poplar St Bridge IL US ILDOT, Fairmont City, IL

Updated: 8:25 PM CDT

Temperature: 76 °F Dew Point: 67 °F Humidity: 72% Wind: NE at 1 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: BROADWAY (South), St. Louis, MO

Updated: 8:50 PM CDT

Temperature: 79.0 °F Dew Point: - Humidity: 60% Wind: North at - Pressure: 29.35 in Hourly Precipitation: - Heat Index: 81 °F Graphs

Location: MesoWest NAMOK1 IL US UPR, Granite City, IL

Updated: 7:50 PM CDT

Temperature: 81 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: www.seedgeeks.com, Brentwood, MO

Updated: 8:59 PM CDT

Temperature: 72.0 °F Dew Point: 70 °F Humidity: 92% Wind: Calm Pressure: 29.95 in Hourly Precipitation: - Heat Index: - Graphs

Location: Ladue, St. Louis, MO

Updated: 8:50 PM CDT

Temperature: 77.0 °F Dew Point: - Humidity: 72% Wind: North at - Pressure: 29.29 in Hourly Precipitation: - Heat Index: 79 °F Graphs

Location: Parkridge, Brentwood, MO

Updated: 9:05 PM CDT

Temperature: 73.9 °F Dew Point: - Humidity: - Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: South County, Affton, MO

Updated: 9:05 PM CDT

Temperature: 72.5 °F Dew Point: 69 °F Humidity: 89% Wind: Calm Pressure: 29.90 in Hourly Precipitation: 0.00 in Heat Index: 70 °F Graphs

Location: Webster Groves, Webster Groves, MO

Updated: 9:05 PM CDT

Temperature: 70.3 °F Dew Point: 68 °F Humidity: 92% Wind: Calm Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Old Skewl, Fairview Heights, IL

Updated: 9:05 PM CDT

Temperature: 70.1 °F Dew Point: 68 °F Humidity: 93% Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: New Goose, Fairview Heights, IL

Updated: 9:05 PM CDT

Temperature: 71.7 °F Dew Point: 68 °F Humidity: 89% Wind: Calm Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: West End, Belleville, IL

Updated: 9:05 PM CDT

Temperature: 72.7 °F Dew Point: 52 °F Humidity: 67% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

Location: Millstadt, Millstadt, IL

Updated: 9:05 PM CDT

Temperature: 67.3 °F Dew Point: 58 °F Humidity: 71% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Collinsville West, Collinsville, IL

Updated: 9:05 PM CDT

Temperature: 72.3 °F Dew Point: 68 °F Humidity: 85% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: 71 °F Graphs

Location: Crestwood, Crestwood, MO

Updated: 8:55 PM CDT

Temperature: 70.7 °F Dew Point: 65 °F Humidity: 82% Wind: Calm Pressure: 29.69 in Hourly Precipitation: - Heat Index: 71 °F Graphs

Location: South St. Louis County, St. Louis, MO

Updated: 9:05 PM CDT

Temperature: 77.2 °F Dew Point: - Humidity: 71% Wind: Calm Pressure: 29.32 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: MesoWest I-255 / IL-3 @ Columbia IL US ILDOT, Columbia, IL

Updated: 8:25 PM CDT

Temperature: 75 °F Dew Point: 67 °F Humidity: 77% Wind: North at 1 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: 1 Mile South of St. Louis Lambert Airport, Woodson Terrace, MO

Updated: 9:05 PM CDT

Temperature: 71.7 °F Dew Point: 68 °F Humidity: 89% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

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

Updated: 9:05 PM CDT

Temperature: 69.8 °F Dew Point: 67 °F Humidity: 90% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Greg and Linsay's House, Swansea, IL

Updated: 9:05 PM CDT

Temperature: 71.4 °F Dew Point: 70 °F Humidity: 96% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: StormGrl2001, Fairview Heights, IL

Updated: 9:04 PM CDT

Temperature: 69.4 °F Dew Point: 68 °F Humidity: 95% Wind: Calm Pressure: 29.92 in Hourly Precipitation: - Heat Index: - Graphs

Location: Gedern Village, Columbia, IL

Updated: 9:03 PM CDT

Temperature: 69.1 °F Dew Point: 68 °F Humidity: 95% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: St. Ann, MO, St. Ann, MO

Updated: 8:54 PM CDT

Temperature: 70.9 °F Dew Point: 67 °F Humidity: 88% Wind: Calm Pressure: 29.90 in Hourly Precipitation: - Heat Index: - Graphs

Location: Chateau Estates, Fairview Heights, IL

Updated: 9:05 PM CDT

Temperature: 70.5 °F Dew Point: 67 °F Humidity: 88% Wind: Calm Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Essex and Geyer, St. Louis, MO

Updated: 8:53 PM CDT

Temperature: 69.8 °F Dew Point: 65 °F Humidity: 86% Wind: Calm Pressure: 29.79 in Hourly Precipitation: - Heat Index: - Graphs

Location: Graeser Acres, St. Louis, MO

Updated: 9:05 PM CDT

Temperature: 71.6 °F Dew Point: 66 °F Humidity: 83% Wind: Calm Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: 71 °F Graphs

Location: Maryland Heights, St Louis, MO

Updated: 9:03 PM CDT

Temperature: 71.6 °F Dew Point: 68 °F Humidity: 89% Wind: Calm Pressure: 29.31 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

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

Updated: 8:53 PM CDT

Temperature: 72.3 °F Dew Point: 68 °F Humidity: 87% Wind: Calm Pressure: 29.95 in Hourly Precipitation: - Heat Index: 71 °F Graphs

Location: Sunset Hills, St Louis, MO

Updated: 8:57 PM CDT

Temperature: 72.5 °F Dew Point: 68 °F Humidity: 86% Wind: Calm Pressure: 29.95 in Hourly Precipitation: - Heat Index: 71 °F Graphs

Location: Quiet Village, Creve Coeur, MO

Updated: 9:05 PM CDT

Temperature: 71.1 °F Dew Point: 69 °F Humidity: 92% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion...updated aviation 
National Weather Service St Louis MO 
708 PM CDT Tue Sep 2 2014 


Short term: (through late tonight) 
issued at 355 PM CDT Tue Sep 2 2014 


A weak area of high pressure was centered over northeast Kansas and 
attempting to push some drier air into our region currently. 
Dewpoints have slipped into the lower 60s across northern MO but the 
drier air has been less effective elsewhere where dewpoints remain 
near 70. An expansive area of low stratus clouds existed this 
morning but has since dissipated. 


Clouds are expected to continue to exit or dissipate heading into 
the evening hours and with the weak area of high pressure building 
in and minimal continued dry air advection once the winds become 
near calm, we are expecting fog to develop over the still wet to 
nearly saturated ground for many locations in southwest Illinois and 
extending back up the I-70 corridor into MO. 


It still looks like nocturnal convection will get going with 
development of the low level jet, but will be well west of our area 
and will take much, if not all, of the night to get close to central 
MO. Backed off on pops as a result thru 12z/Wed. 


Favored the cooler MOS temps due to anticipated fog development at 
most locations. 


Tes 


Long term: (wednesday through next tuesday) 
issued at 355 PM CDT Tue Sep 2 2014 


What does develop tonight still looks on track to eventually advance 
eastward into our region on Wednesday but will probably weaken and 
redevelop to some extent with the heating of the day as it slowly 
progresses thru. Backed off on timing a bit with most areas 
probably seeing their best chances for rain on Wednesday afternoon 
versus the morning. 


Lessening chances for rain will then be seen heading into Wednesday 
night, especially into MO, as the leftover convection from the 
daytime limps into Illinois. 


Thursday through Friday still on track to be well above average for 
temps, with Thursday looking increasingly likely it will need a heat 
headline and this may extend into Friday. Friday will depend on how 
fast an approaching cold front, and its associated rain, work into 
the area. 


Best chances for rain rest of the week look to be what develops 
along this late week front: Friday afternoon and night. 


Behind the front, we are still looking at a nice period of below 
average temps for Saturday thru Monday with dry wx. Temps will 
rebound some with rain chances returning on Tuesday. 


Tes 


&& 


Aviation: (for the 00z tafs through 00z Wednesday evening) 
issued at 643 PM CDT Tue Sep 2 2014 


Surface bndry now well to the south along the Kansas/OK and MO/Arkansas border 
and on into the Ohio Valley. Skies should clear this evening with winds 
become lght/vrb after sunset. Surface high pressure will drift overhead 
tonight. With the rain from last night allowing for a moist bndry 
layer...expect widespread fog to form after midnight due to favorable 
radiational cooling conditions. Vsbys may be lower than currently 
indicated...will have to monitor trends overnight. Left mention of 
fog out of KUIN due to limited precip. Fog should dsspt tomorrow 
mrng with diurnal cu forming. Guidance indicates that convection 
should dvlp overnight across ern Kansas on the nose of the low level jet as it 
intersects the surface bndry. This activity is expected to slide east 
into MO Wednesday morning, weakening as it does so. There is some 
question as to how far east the precip will make it before dssptng. 
The bndry is fcst to work back north tomorrow aftn...possibly 
bringing another chance for rain showers/thunderstorm activity. The chance for 
aftn convection partially depends on what happens with the earlier 
precip and assoc cloud cover. Due to the uncertainty...opted to 
leave out for now. 


Specifics for kstl: 


Clearing skies this evng and light winds overnight will allow fog 
to form after midnight. Unsure how dense it will become at the 
terminal, so opted to leave it MVFR for now but, trends will need 
to be monitored overnight. Fog should dsspt tomorrow mrng with 
diurnal cu forming. There is a chance for either late mrng and/or 
aftn shras/tstms as a bndry lifts north thru the area. Due to low 
confidence on coverage...decided not to include in the taf attm. 


2% 


&& 


Lsx watches/warnings/advisories: 
MO...none. 
Illinois...none. 
&& 


$$ 


Weather forecast office lsx 








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