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

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Overcast

24°F

-4°C

Humidity 77%
Wind Speed Calm
Barometer 30.48 in
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Last update 1 Dec 1:55 am CST
Extended Forecast for

2 Miles S Donnellson IL

  • Overnight

    Overnight: Cloudy, with a low around 17. Light north wind.

    Low: 17 °F

    Cloudy

  • Monday

    Monday: A 50 percent chance of snow, mainly after 3pm. Cloudy, with a high near 31. Southeast wind around 6 mph becoming calm in the afternoon.

    High: 31 °F

    Cloudy then
    Chance Snow

  • Monday Night

    Monday Night: Snow, mainly before 1am. Low around 17. Calm wind becoming northwest around 6 mph after midnight. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    Low: 17 °F

    Snow then
    Snow Likely

  • Tuesday

    Tuesday: Partly sunny, with a high near 28. Northwest wind around 6 mph becoming calm in the afternoon.

    High: 28 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 16. Calm wind becoming south around 6 mph after midnight.

    Low: 16 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 36.

    High: 36 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 11.

    Low: 11 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny and cold, with a high near 19.

    High: 19 °F

    Cold

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 7.

    Low: 7 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Cloudy, with a low around 17. Light north wind.
Monday
A 50 percent chance of snow, mainly after 3pm. Cloudy, with a high near 31. Southeast wind around 6 mph becoming calm in the afternoon.
Monday Night
Snow, mainly before 1am. Low around 17. Calm wind becoming northwest around 6 mph after midnight. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Tuesday
Partly sunny, with a high near 28. Northwest wind around 6 mph becoming calm in the afternoon.
Tuesday Night
Partly cloudy, with a low around 16. Calm wind becoming south around 6 mph after midnight.
Wednesday
Partly sunny, with a high near 36.
Wednesday Night
Mostly cloudy, with a low around 11.
Thursday
Mostly sunny and cold, with a high near 19.
Thursday Night
Mostly cloudy, with a low around 7.
Friday
A 40 percent chance of snow. Mostly cloudy, with a high near 30.
Friday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 21.
Saturday
Mostly cloudy, with a high near 34.
Saturday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 23.
Sunday
Mostly cloudy, with a high near 34.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Donnellson IL
 39°N 89.47°W (Elev. 600 ft)
Last Update:
10:31 pm CST Nov 30, 2025
Forecast Valid:
2am 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