Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

49°F

9°C

Humidity 78%
Wind Speed S 8 mph
Barometer 29.71 in
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 5 Jan 11:15 pm CST
Extended Forecast for

Wilsonville IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 45. South wind around 11 mph, with gusts as high as 20 mph.

    Low: 45 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 55. West wind 10 to 14 mph, with gusts as high as 22 mph.

    High: 55 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 34. Northwest wind 3 to 8 mph.

    Low: 34 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 56. Calm wind becoming south 5 to 8 mph in the morning.

    High: 56 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 42. South wind around 8 mph.

    Low: 42 °F

    Mostly Cloudy

  • Thursday

    Thursday: Rain.  High near 57. Chance of precipitation is 90%.

    High: 57 °F

    Rain Likely
    then Rain

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before midnight, then a chance of rain after midnight.  Mostly cloudy, with a low around 52. Chance of precipitation is 70%.

    Low: 52 °F

    Showers
    Likely then
    Chance Rain

  • Friday

    Friday: A 40 percent chance of rain, mainly after noon.  Partly sunny, with a high near 59.

    High: 59 °F

    Chance Rain

  • Friday Night

    Friday Night: A 30 percent chance of rain before midnight.  Mostly cloudy, with a low around 36.

    Low: 36 °F

    Chance Rain
    then Mostly
    Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 45. South wind around 11 mph, with gusts as high as 20 mph.
Tuesday
Partly sunny, with a high near 55. West wind 10 to 14 mph, with gusts as high as 22 mph.
Tuesday Night
Partly cloudy, with a low around 34. Northwest wind 3 to 8 mph.
Wednesday
Sunny, with a high near 56. Calm wind becoming south 5 to 8 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around 42. South wind around 8 mph.
Thursday
Rain. High near 57. Chance of precipitation is 90%.
Thursday Night
Showers likely and possibly a thunderstorm before midnight, then a chance of rain after midnight. Mostly cloudy, with a low around 52. Chance of precipitation is 70%.
Friday
A 40 percent chance of rain, mainly after noon. Partly sunny, with a high near 59.
Friday Night
A 30 percent chance of rain before midnight. Mostly cloudy, with a low around 36.
Saturday
Partly sunny, with a high near 42.
Saturday Night
Mostly cloudy, with a low around 23.
Sunday
Mostly sunny, with a high near 34.
Sunday Night
Mostly clear, with a low around 23.
Monday
Sunny, with a high near 45.
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ABOUT THIS FORECAST

 
Point Forecast:
Wilsonville IL
 39.07°N 89.87°W (Elev. 636 ft)
9:46 pm CST Jan 5, 2026
11pm CST Jan 5, 2026-6pm CST Jan 12, 2026
 
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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