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.

Mostly Cloudy

47°F

8°C

Humidity 87%
Wind Speed Calm
Barometer 30.05 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 2 May 5:55 am CDT
Extended Forecast for

Wilsonville IL

  • Today

    Today: Partly sunny, with a high near 58. North wind 5 to 10 mph.

    High: 58 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 38. Northwest wind around 6 mph becoming calm.

    Low: 38 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 71. South wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon.

    High: 71 °F

    Sunny then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 51. Southwest wind 6 to 9 mph. Chance of precipitation is 40%.

    Low: 51 °F

    Chance
    T-storms

  • Monday

    Monday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 76. Southwest wind 7 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.

    High: 76 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 56. Chance of precipitation is 70%.

    Low: 56 °F

    Chance
    T-storms then
    Showers
    Likely

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 65. Chance of precipitation is 90%.

    High: 65 °F

    Showers
    Likely then
    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 44. Chance of precipitation is 80%.

    Low: 44 °F

    Showers

  • Wednesday

    Wednesday: A 40 percent chance of showers. Mostly cloudy, with a high near 57.

    High: 57 °F

    Chance
    Showers

Detailed Forecast

Today
Partly sunny, with a high near 58. North wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 38. Northwest wind around 6 mph becoming calm.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 71. South wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 51. Southwest wind 6 to 9 mph. Chance of precipitation is 40%.
Monday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 76. Southwest wind 7 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 56. Chance of precipitation is 70%.
Tuesday
Showers and possibly a thunderstorm. High near 65. Chance of precipitation is 90%.
Tuesday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 44. Chance of precipitation is 80%.
Wednesday
A 40 percent chance of showers. Mostly cloudy, with a high near 57.
Wednesday Night
A 30 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 41.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 61.
Thursday Night
Partly cloudy, with a low around 42.
Friday
Mostly sunny, with a high near 68.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Wilsonville IL
 39.07°N 89.87°W (Elev. 636 ft)
Last Update:
5:31 am CDT May 2, 2026
Forecast Valid:
6am CDT May 2, 2026-6pm CDT May 8, 2026
 
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