National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Overcast

24°F

-4°C

Humidity 81%
Wind Speed E 3 mph
Barometer 30.39 in (1029.5 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Last update 1 Dec 8:53 am CST
Extended Forecast for

3 Miles NNE Fairmont City IL

Winter Weather Advisory December 1, 12:00pm until December 2, 12:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Today

    Today: Snow, mainly after 11am. High near 28. East wind around 5 mph becoming calm in the morning. Chance of precipitation is 80%. Total daytime snow accumulation of around an inch possible.

    High: 28 °F

    Chance Snow
    then Snow

  • Tonight

    Tonight: Snow, mainly before midnight. Low around 21. Calm wind becoming northwest around 6 mph after midnight. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    Low: 21 °F

    Snow then
    Slight Chance
    Snow

  • Tuesday

    Tuesday: Partly sunny, with a high near 31. Northwest wind around 6 mph becoming calm in the afternoon.

    High: 31 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 21. Calm wind becoming south around 6 mph after midnight.

    Low: 21 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 40. South wind 5 to 7 mph becoming west in the afternoon.

    High: 40 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 24.

    High: 24 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 14.

    Low: 14 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Friday

    Friday: A 30 percent chance of snow. Mostly cloudy, with a high near 35.

    High: 35 °F

    Chance Snow

Detailed Forecast

Today
Snow, mainly after 11am. High near 28. East wind around 5 mph becoming calm in the morning. Chance of precipitation is 80%. Total daytime snow accumulation of around an inch possible.
Tonight
Snow, mainly before midnight. Low around 21. Calm wind becoming northwest around 6 mph after midnight. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Tuesday
Partly sunny, with a high near 31. Northwest wind around 6 mph becoming calm in the afternoon.
Tuesday Night
Mostly clear, with a low around 21. Calm wind becoming south around 6 mph after midnight.
Wednesday
Partly sunny, with a high near 40. South wind 5 to 7 mph becoming west in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 16.
Thursday
Mostly sunny, with a high near 24.
Thursday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 14.
Friday
A 30 percent chance of snow. Mostly cloudy, with a high near 35.
Friday Night
A slight chance of rain and snow before midnight. Mostly cloudy, with a low around 26. Chance of precipitation is 20%.
Saturday
Partly sunny, with a high near 40.
Saturday Night
Mostly cloudy, with a low around 26.
Sunday
Mostly cloudy, with a high near 37.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Fairmont City IL
 38.68°N 90.09°W (Elev. 404 ft)
Last Update:
8:51 am CST Dec 1, 2025
Forecast Valid:
9am CST Dec 1, 2025-6pm CST Dec 7, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation