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

59°F

15°C

Humidity 29%
Wind Speed SE 9 mph
Barometer 30.17 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 24 Mar 6:50 pm CDT
Extended Forecast for

Edwardsville IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 43. Southeast wind 5 to 7 mph.

    Low: 43 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 77. South wind 5 to 11 mph.

    High: 77 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 63. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 63 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 89. Southwest wind 10 to 15 mph, with gusts as high as 24 mph.

    High: 89 °F

    Sunny

  • Thursday Night

    Thursday Night: Rain. Low around 43. Southwest wind 10 to 18 mph becoming north after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 90%.

    Low: 43 °F

    Rain Likely
    then Rain

  • Friday

    Friday: A 30 percent chance of rain before 1pm. Partly sunny, with a high near 51.

    High: 51 °F

    Chance Rain

  • Friday Night

    Friday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 43. Southeast wind 5 to 7 mph.
Wednesday
Mostly sunny, with a high near 77. South wind 5 to 11 mph.
Wednesday Night
Partly cloudy, with a low around 63. South wind around 10 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 89. Southwest wind 10 to 15 mph, with gusts as high as 24 mph.
Thursday Night
Rain. Low around 43. Southwest wind 10 to 18 mph becoming north after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 90%.
Friday
A 30 percent chance of rain before 1pm. Partly sunny, with a high near 51.
Friday Night
Mostly clear, with a low around 31.
Saturday
Sunny, with a high near 57.
Saturday Night
Partly cloudy, with a low around 40.
Sunday
Mostly sunny, with a high near 63.
Sunday Night
Mostly cloudy, with a low around 49.
Monday
Mostly sunny, with a high near 78.
Monday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 58.
Tuesday
A 40 percent chance of rain and thunderstorms. Partly sunny, with a high near 77.
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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:
5:46 pm CDT Mar 24, 2026
Forecast Valid:
6pm CDT Mar 24, 2026-6pm CDT Mar 31, 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