Saint Peters, Missouri Weather Conditions

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Current Conditions

  • 68°
  • Fog
  • Wind: Calm
  • Humidity: 94%
  • Visibility: 0.5 miles
  • Dew Point: 66°
  • Pressure: 30.02 in. +

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Next 12 Hours

1  am
4  am
7  am
10  am
1  pm
Clear
Clear
Clear
Clear
Fog
Fog
Partly Cloudy
Partly Cloudy
Chance of a Thunderstorm
Chance of T-storms
68°
72°
64°
81°
84°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Wednesday
  • Chance of a Thunderstorm
  • High: 86 °
  • Low: 72 °
  • Chance of T-Storms
  • Thursday
  • Partly Cloudy
  • High: 91 °
  • Low: 72 °
  • Partly Cloudy
  • Friday
  • Thunderstorm
  • High: 88 °
  • Low: 64 °
  • T-Storms
  • Saturday
  • Chance of a Thunderstorm
  • High: 77 °
  • Low: 59 °
  • Chance of T-Storms
  • Sunday
  • Clear
  • High: 77 °
  • Low: 55 °
  • Clear

Forecast for Saint Peters, 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 88F. Winds less than 5 mph.

  • Tuesday Night

    Clear. Low of 63F. Winds less than 5 mph.

  • Wednesday

    Partly cloudy with a chance of a thunderstorm and a chance of rain in the afternoon. Fog early. High of 86F with a heat index of 91F. Winds from the SSE at 5 to 10 mph. Chance of rain 50%.

  • Wednesday Night

    Partly cloudy with a chance of a thunderstorm and a chance of rain. Low of 72F. Winds from the SSE at 5 to 10 mph. Chance of rain 20%.

  • Thursday

    Partly cloudy. High of 91F with a heat index of 99F. Winds from the SSW at 5 to 10 mph.

  • Thursday Night

    Partly cloudy. Low of 72F. Winds from the SSW at 5 to 10 mph.

  • Friday

    Mostly cloudy with a chance of a thunderstorm and a chance of rain. High of 88F with a heat index of 93F. 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 64F. Winds from the North at 5 to 10 mph. Chance of rain 50% 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 in the evening, then partly cloudy. Fog overnight. Low of 59F. Winds from the NNE at 5 to 10 mph.

  • Sunday

    Clear in the morning, then partly cloudy. High of 77F. 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 59F. Winds from the SE at 5 to 10 mph.

  • Tuesday

    Overcast with a chance of a thunderstorm. Fog early. High of 84F. Winds from the South at 5 to 10 mph. Chance of rain 50%.

  • Tuesday Night

    Mostly cloudy with a chance of a thunderstorm. Fog overnight. Low of 70F. Winds from the South at 5 to 10 mph. Chance of rain 60% with rainfall amounts near 0.5 in. possible.

  • Wednesday

    Overcast with a chance of a thunderstorm. High of 88F. Winds from the SSW at 5 to 10 mph. Chance of rain 40%.

  • Wednesday Night

    Mostly cloudy with a chance of a thunderstorm. Fog overnight. Low of 64F. Winds less than 5 mph. Chance of rain 50% with rainfall amounts near 0.3 in. possible.

  • Thursday

    Mostly cloudy with a chance of a thunderstorm. High of 86F. Winds less than 5 mph. Chance of rain 40%.

  • Thursday Night

    Partly cloudy with a chance of a thunderstorm. Fog overnight. Low of 61F. Winds less than 5 mph. Chance of rain 40%.

  • Friday

    Partly cloudy with a chance of a thunderstorm. Fog early. High of 84F. Winds less than 5 mph. Chance of rain 50%.

  • Friday Night

    Partly cloudy with a chance of a thunderstorm. Fog overnight. Low of 57F. Winds less than 5 mph. Chance of rain 40%.

  • Saturday

    Clear with a chance of a thunderstorm. High of 84F. Winds less than 5 mph. Chance of rain 20%.

  • Saturday Night

    Clear. Fog overnight. Low of 57F. 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 0853 PM

O'Fallon, St Charles County.

Thunderstorm wind gust e40 mph, reported by NWS employee.


            Wind gusts 35 to 45 mph north of I-70 and west of Main
            Street... then it poured down rain. Lots of ponding on
            roadways.




09/02/2014 1200 am

2 miles S of Wentzville, St Charles County.

Heavy rain m3.68 inch, reported by NWS employee.





09/02/2014 1230 am

6 miles WSW of O'Fallon, St Charles County.

Heavy rain m3.56 inch, reported by trained spotter.


            Rainfall so far. Light rain still falling.




09/02/2014 0546 am

St. Peters, St Charles County.

Heavy rain m3.32 inch, reported by trained spotter.


            Near birdie hills and Mexico Road




09/02/2014 0700 am

4 miles NNE of Orchard farmgomery ciy, St Charles County.

Heavy rain m3.71 inch, reported by ASOS.


            24-hr total from Smartt field.




09/02/2014 0700 am

O'Fallon, St Charles County.

Heavy rain m4.23 inch, reported by NWS employee.


            24-hr total.




09/02/2014 0700 am

Cottleville, St Charles County.

Heavy rain m3.15 inch, reported by NWS employee.


            24-hr total.




09/02/2014 0800 am

Lake St. Louis, St Charles County.

Heavy rain m4.03 inch, reported by NWS employee.


            24-hr total.




09/02/2014 0800 am

Lake St. Louis, St Charles County.

Heavy rain m4.03 inch, reported by NWS employee.


            24-hr total.





09/02/2014 0700 am

Cottleville, St Charles County.

Heavy rain m3.15 inch, reported by NWS employee.


            24-hr total.





09/02/2014 0700 am

O'Fallon, St Charles County.

Heavy rain m4.23 inch, reported by NWS employee.


            24-hr total.





09/02/2014 0700 am

4 miles NNE of Orchard Farm, St Charles County.

Heavy rain m3.71 inch, reported by ASOS.


            24-hr total from Smartt field.





09/02/2014 0546 am

St. Peters, St Charles County.

Heavy rain m3.32 inch, reported by trained spotter.


            Near birdie hills and Mexico Road





09/02/2014 1230 am

6 miles WSW of O'Fallon, St Charles County.

Heavy rain m3.56 inch, reported by trained spotter.


            Rainfall so far. Light rain still falling.





09/02/2014 1200 am

2 miles S of Wentzville, St Charles County.

Heavy rain m3.68 inch, reported by NWS employee.






09/01/2014 0853 PM

O'Fallon, St Charles County.

Thunderstorm wind gust e40 mph, reported by NWS employee.


            Wind gusts 35 to 45 mph north of I-70 and west of Main
            Street... then it poured down rain. Lots of ponding on
            roadways.




Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Wilshire Valley, St. Charles, MO

Updated: 11:32 PM CDT

Temperature: 71.4 °F Dew Point: 65 °F Humidity: 79% Wind: Calm Pressure: 30.11 in Hourly Precipitation: 0.00 in Heat Index: 72 °F Graphs

Location: Danielle Downs, St. Peters, MO

Updated: 11:36 PM CDT

Temperature: 68.4 °F Dew Point: 68 °F Humidity: 99% Wind: Calm Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Talbridge, St. Charles, MO

Updated: 11:35 PM CDT

Temperature: 68.9 °F Dew Point: 67 °F Humidity: 94% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Harvester, St. Charles, MO

Updated: 11:21 PM CDT

Temperature: 68.0 °F Dew Point: 67 °F Humidity: 96% Wind: Calm Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: West Drive, St. Peters, MO

Updated: 11:36 PM CDT

Temperature: 69.3 °F Dew Point: 68 °F Humidity: 93% Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Creve Coeur Airport, Maryland Heights, MO

Updated: 11:31 PM CDT

Temperature: 66.6 °F Dew Point: 65 °F Humidity: 96% Wind: Calm Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Historic Saint Charles, Saint Charles, MO

Updated: 11:35 PM CDT

Temperature: 71.9 °F Dew Point: 70 °F Humidity: 93% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Lindenwood, St. Charles, MO

Updated: 11:35 PM CDT

Temperature: 70.4 °F Dew Point: 69 °F Humidity: 94% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Saint Charles Hills, Saint Charles, MO

Updated: 11:36 PM CDT

Temperature: 68.8 °F Dew Point: 66 °F Humidity: 91% Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.01 in Heat Index: - Graphs

Location: Foxborough Estates, St. Charles, MO

Updated: 11:36 PM CDT

Temperature: 71.7 °F Dew Point: 69 °F Humidity: 91% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Creve Coeur Park - Forest ReLeaf, St. Louis, MO

Updated: 11:33 PM CDT

Temperature: 67.3 °F Dew Point: 66 °F Humidity: 97% Wind: Calm Pressure: 29.52 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: COTTLEVILLE/HARVESTER, St. Charles, MO

Updated: 11:35 PM CDT

Temperature: 70.3 °F Dew Point: 70 °F Humidity: 98% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Earth City, Earth City, MO

Updated: 12:31 AM EDT

Temperature: 72.3 °F Dew Point: 68 °F Humidity: 87% Wind: Calm Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: 71 °F Graphs

Location: St. Peters, St. Peters, MO

Updated: 11:36 PM CDT

Temperature: 71.1 °F Dew Point: 69 °F Humidity: 94% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Chesterfield (East), Chesterfield, MO

Updated: 11:36 PM CDT

Temperature: 69.2 °F Dew Point: 68 °F Humidity: 95% Wind: SE at 1.0 mph Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Creve Coeur, St. Louis, MO

Updated: 11:36 PM CDT

Temperature: 67.6 °F Dew Point: 68 °F Humidity: 100% Wind: Calm Pressure: 29.59 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Austin Ridge, Saint Charles, MO

Updated: 11:28 PM CDT

Temperature: 71.0 °F Dew Point: 69 °F Humidity: 93% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Harmony Ridge, Cottleville, MO

Updated: 11:21 PM CDT

Temperature: 68.0 °F Dew Point: 65 °F Humidity: 91% Wind: Calm Pressure: 29.93 in Hourly Precipitation: - Heat Index: - Graphs

Location: Whispering Hills, Creve Coeur, MO

Updated: 11:36 PM CDT

Temperature: 69.2 °F Dew Point: 67 °F Humidity: 94% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Ross Ave, St. Louis, MO

Updated: 11:36 PM CDT

Temperature: 70.5 °F Dew Point: 65 °F Humidity: 84% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Quiet Village, Creve Coeur, MO

Updated: 11:36 PM CDT

Temperature: 69.0 °F Dew Point: 68 °F Humidity: 96% Wind: Calm Pressure: 30.04 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Maryland Heights, St Louis, MO

Updated: 11:33 PM CDT

Temperature: 69.7 °F Dew Point: 68 °F Humidity: 93% Wind: Calm Pressure: 29.35 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: De Smet Jesuit High School, Creve Coeur, MO

Updated: 11:22 PM CDT

Temperature: 72.2 °F Dew Point: 67 °F Humidity: 84% Wind: NW at 3.0 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 71 °F Graphs

Location: Graeser Acres, St. Louis, MO

Updated: 11:36 PM CDT

Temperature: 69.7 °F Dew Point: 66 °F Humidity: 87% Wind: Calm Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Pennial Park, O'Fallon, MO

Updated: 11:35 PM CDT

Temperature: 67.4 °F Dew Point: 67 °F Humidity: 98% Wind: Calm Pressure: 29.89 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

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

Updated: 11:27 PM CDT

Temperature: 67.6 °F Dew Point: 65 °F Humidity: 92% Wind: Calm Pressure: 29.95 in Hourly Precipitation: - Heat Index: - Graphs

Location: Riverwood Place, Florissant, MO

Updated: 11:36 PM CDT

Temperature: 68.3 °F Dew Point: 67 °F Humidity: 96% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Piggy's BBQ, OFallon, MO

Updated: 11:35 PM CDT

Temperature: 71.7 °F Dew Point: 70 °F Humidity: 93% Wind: SW at 1.0 mph Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

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

Updated: 11:36 PM CDT

Temperature: 68.8 °F Dew Point: 67 °F Humidity: 95% Wind: Calm Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Downtown O'Fallon, O'Fallon, MO

Updated: 11:36 PM CDT

Temperature: 69.0 °F Dew Point: 68 °F Humidity: 96% Wind: Calm Pressure: 30.21 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Ofallon Civic Park, Ofallon, MO

Updated: 11:35 PM CDT

Temperature: 69.5 °F Dew Point: 69 °F Humidity: 98% Wind: Calm Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Twin Chimneys, O'Fallon, MO

Updated: 11:35 PM CDT

Temperature: 68.9 °F Dew Point: 68 °F Humidity: 97% Wind: Calm Pressure: 29.90 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: The Boardwalk at WingHaven, OFallon, MO

Updated: 11:28 PM CDT

Temperature: 68.7 °F Dew Point: 67 °F Humidity: 95% Wind: Calm Pressure: 29.98 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 
1134 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 06z tafs through 06z Wednesday night) 
issued at 1119 PM CDT Tue Sep 2 2014 


The main fcst concern for this pkg is the fog threat overnight. 
Vsbys have dropped to IFR at several stations across the area, 
just not at any of the the taf sites...yet. A moist bndry layer 
coupled with good radiational cooling should lead to widespread 
fog dvlpmnt overnight. Ksus and kcps will likely have the densest 
fog due to their River Valley locations with other terminals 
optimistically remaining MVFR. Did not include visibility restrictions 
at KUIN due to lack of rainfall last night. Trends will have to 
monitored overnight for updates. Convection has already initiated 
across Kansas this evng. This activity will work east-northeast overnight and 
should stay north of kcou and will dsspt before making it as far 
east as KUIN. A weak surface bndry will lift north thru the area 
tomorrow aftn and is fcst to initiate thunderstorm dvlpmnt. Due to low 
confidence on the coverage of the convection...did not include 
mention in the tafs. 


Specifics for kstl: 


Light winds and clear skies overnight will allow for at least 
MVFR fog to dvlp towards sunrise. An update may be needed if the 
fog forms sooner or is more dense than anticipated. The fog 
should burn off by mid mrng with diurnal cu forming shortly 
thereafter. There is the chance for some aftn convection...but 
questions about the coverage precludes mention in the fcst attm. 


2% 


&& 


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


$$ 


Weather forecast office lsx 



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