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

Hazardous Weather Conditions

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fog/Mist

47°F

8°C

Humidity 94%
Wind Speed E 5 mph
Barometer 30.13 in
Dewpoint 45°F (7°C)
Visibility 2.50 mi
Wind Chill45°F (7°C)
Last update 20 Nov 3:55 am CST
Extended Forecast for

Donnellson IL

  • Today

    Today: A slight chance of rain before 11am, then a slight chance of rain after 4pm. Patchy fog between 8am and 9am. Otherwise, cloudy, with a high near 55. Southeast wind 5 to 7 mph. Chance of precipitation is 20%.

    High: 55 °F

    Slight Chance
    Rain and
    Patchy Fog

  • Tonight

    Tonight: A chance of rain and thunderstorms before midnight, then a chance of rain between midnight and 3am, then rain and possibly a thunderstorm after 3am. Patchy fog. Low around 50. Southeast wind 3 to 5 mph. Chance of precipitation is 80%.

    Low: 50 °F

    Chance Rain
    and Patchy
    Fog then Rain
    and Patchy
    Fog

  • Friday

    Friday: Rain. High near 60. Light east wind becoming northeast 5 to 9 mph in the morning. Chance of precipitation is 90%.

    High: 60 °F

    Rain

  • Friday Night

    Friday Night: A 50 percent chance of rain before midnight. Mostly cloudy, with a low around 41. Northeast wind around 7 mph.

    Low: 41 °F

    Chance Rain
    then Mostly
    Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 56. Northeast wind 3 to 6 mph.

    High: 56 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Monday

    Monday: A 40 percent chance of rain. Mostly cloudy, with a high near 57.

    High: 57 °F

    Chance Rain

Detailed Forecast

Today
A slight chance of rain before 11am, then a slight chance of rain after 4pm. Patchy fog between 8am and 9am. Otherwise, cloudy, with a high near 55. Southeast wind 5 to 7 mph. Chance of precipitation is 20%.
Tonight
A chance of rain and thunderstorms before midnight, then a chance of rain between midnight and 3am, then rain and possibly a thunderstorm after 3am. Patchy fog. Low around 50. Southeast wind 3 to 5 mph. Chance of precipitation is 80%.
Friday
Rain. High near 60. Light east wind becoming northeast 5 to 9 mph in the morning. Chance of precipitation is 90%.
Friday Night
A 50 percent chance of rain before midnight. Mostly cloudy, with a low around 41. Northeast wind around 7 mph.
Saturday
Mostly sunny, with a high near 56. Northeast wind 3 to 6 mph.
Saturday Night
Mostly clear, with a low around 36.
Sunday
Mostly sunny, with a high near 60.
Sunday Night
A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 40.
Monday
A 40 percent chance of rain. Mostly cloudy, with a high near 57.
Monday Night
Rain likely. Mostly cloudy, with a low around 46. Chance of precipitation is 70%.
Tuesday
A 40 percent chance of rain. Mostly cloudy, with a high near 59.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Partly sunny, with a high near 49.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Donnellson IL
 39.04°N 89.5°W (Elev. 554 ft)
Last Update:
3:16 am CST Nov 20, 2025
Forecast Valid:
4am CST Nov 20, 2025-6pm CST Nov 26, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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