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.

Fair

23°F

-5°C

Humidity 52%
Wind Speed W 16 G 22 mph
Barometer 30.14 in
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Wind Chill10°F (-12°C)
Last update 16 Mar 11:35 pm CDT
Extended Forecast for

Edwardsville IL

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 15. Northwest wind 13 to 16 mph, with gusts as high as 25 mph.

    Low: 15 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Increasing clouds, with a high near 34. Northwest wind 7 to 9 mph becoming southwest in the afternoon.

    High: 34 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A chance of snow before 4am, then a slight chance of rain. Cloudy, with a low around 31. Southeast wind 7 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.

    Low: 31 °F

    Chance Snow
    then Chance
    Rain/Snow

  • Wednesday

    Wednesday: Mostly sunny, with a high near 63. South wind 9 to 13 mph becoming west in the afternoon. Winds could gust as high as 20 mph.

    High: 63 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 43. West wind around 5 mph becoming light and variable.

    Low: 43 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 15. Northwest wind 13 to 16 mph, with gusts as high as 25 mph.
Tuesday
Increasing clouds, with a high near 34. Northwest wind 7 to 9 mph becoming southwest in the afternoon.
Tuesday Night
A chance of snow before 4am, then a slight chance of rain. Cloudy, with a low around 31. Southeast wind 7 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.
Wednesday
Mostly sunny, with a high near 63. South wind 9 to 13 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
Mostly cloudy, with a low around 43. West wind around 5 mph becoming light and variable.
Thursday
Mostly sunny, with a high near 72.
Thursday Night
Partly cloudy, with a low around 47.
Friday
Mostly sunny, with a high near 76.
Friday Night
Partly cloudy, with a low around 52.
Saturday
Mostly sunny, with a high near 77.
Saturday Night
Mostly clear, with a low around 50.
Sunday
Sunny, with a high near 71.
Sunday Night
Partly cloudy, with a low around 40.
Monday
Mostly sunny, with a high near 54.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Edwardsville IL
 38.81°N 89.97°W (Elev. 499 ft)
Last Update:
8:56 pm CDT Mar 16, 2026
Forecast Valid:
11pm CDT Mar 16, 2026-6pm CDT Mar 23, 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