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

46°F

8°C

Humidity 94%
Wind Speed Calm
Barometer 30.16 in
Dewpoint 45°F (7°C)
Visibility 2.50 mi
Last update 20 Nov 1:35 am CST
Extended Forecast for

Wilsonville IL

  • Overnight

    Overnight: Cloudy, with a low around 44. Calm wind becoming southeast around 5 mph.

    Low: 44 °F

    Cloudy

  • Thursday

    Thursday: A slight chance of rain before noon, then a chance of rain after 4pm. Patchy fog between 7am and 9am. Otherwise, cloudy, with a high near 59. Southeast wind 6 to 8 mph. Chance of precipitation is 40%.

    High: 59 °F

    Chance Rain
    and Patchy
    Fog

  • Thursday Night

    Thursday Night: Rain likely and possibly a thunderstorm before midnight, then rain between midnight and 3am, then rain and possibly a thunderstorm after 3am. Patchy fog after 9pm. Low around 51. Southeast wind around 6 mph becoming calm after midnight. Chance of precipitation is 80%.

    Low: 51 °F

    Rain and
    Patchy Fog

  • Friday

    Friday: Rain. High near 60. East wind 5 to 10 mph. 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 5 to 8 mph.

    Low: 41 °F

    Chance Rain
    then Mostly
    Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Cloudy, with a low around 44. Calm wind becoming southeast around 5 mph.
Thursday
A slight chance of rain before noon, then a chance of rain after 4pm. Patchy fog between 7am and 9am. Otherwise, cloudy, with a high near 59. Southeast wind 6 to 8 mph. Chance of precipitation is 40%.
Thursday Night
Rain likely and possibly a thunderstorm before midnight, then rain between midnight and 3am, then rain and possibly a thunderstorm after 3am. Patchy fog after 9pm. Low around 51. Southeast wind around 6 mph becoming calm after midnight. Chance of precipitation is 80%.
Friday
Rain. High near 60. East wind 5 to 10 mph. Chance of precipitation is 90%.
Friday Night
A 50 percent chance of rain before midnight. Mostly cloudy, with a low around 41. Northeast wind 5 to 8 mph.
Saturday
Mostly sunny, with a high near 57.
Saturday Night
Partly cloudy, with a low around 37.
Sunday
Mostly sunny, with a high near 60.
Sunday Night
Mostly cloudy, with a low around 41.
Monday
A 20 percent chance of rain after noon. Mostly cloudy, with a high near 59.
Monday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 45.
Tuesday
A 40 percent chance of rain. Mostly cloudy, with a high near 57.
Tuesday Night
Mostly cloudy, with a low around 36.
Wednesday
Mostly sunny, with a high near 48.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Wilsonville IL
 39.05°N 89.84°W (Elev. 600 ft)
Last Update:
1:56 am CST Nov 20, 2025
Forecast Valid:
2am CST Nov 20, 2025-6pm CST Nov 26, 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