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

34°F

1°C

Humidity 29%
Wind Speed S 10 mph
Barometer 30.26 in
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 20 Jan 4:50 pm CST
Extended Forecast for

Edwardsville IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 28. South wind 11 to 14 mph, with gusts as high as 23 mph.

    Low: 28 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy through mid morning, then gradual clearing, with a high near 42. West wind 9 to 14 mph, with gusts as high as 21 mph.

    High: 42 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 24. Southwest wind 7 to 11 mph becoming northwest after midnight. Winds could gust as high as 23 mph.

    Low: 24 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 36. Northwest wind around 6 mph.

    High: 36 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 10. Light north wind increasing to 10 to 15 mph in the evening. Winds could gust as high as 22 mph.

    Low: 10 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy and cold, with a high near 14.

    High: 14 °F

    Cold

  • Friday Night

    Friday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 3.

    Low: 3 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday

    Saturday: A 40 percent chance of snow, mainly after noon. Cloudy and cold, with a high near 14.

    High: 14 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 9.

    Low: 9 °F

    Chance Snow

Detailed Forecast

Tonight
Mostly cloudy, with a low around 28. South wind 11 to 14 mph, with gusts as high as 23 mph.
Wednesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 42. West wind 9 to 14 mph, with gusts as high as 21 mph.
Wednesday Night
Mostly clear, with a low around 24. Southwest wind 7 to 11 mph becoming northwest after midnight. Winds could gust as high as 23 mph.
Thursday
Partly sunny, with a high near 36. Northwest wind around 6 mph.
Thursday Night
Mostly cloudy, with a low around 10. Light north wind increasing to 10 to 15 mph in the evening. Winds could gust as high as 22 mph.
Friday
Mostly cloudy and cold, with a high near 14.
Friday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 3.
Saturday
A 40 percent chance of snow, mainly after noon. Cloudy and cold, with a high near 14.
Saturday Night
A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 9.
Sunday
Partly sunny, with a high near 22.
Sunday Night
Partly cloudy, with a low around 7.
Monday
Mostly sunny, with a high near 24.
Monday Night
Mostly clear, with a low around 11.
Tuesday
Mostly sunny, with a high near 36.
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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:
4:26 pm CST Jan 20, 2026
Forecast Valid:
5pm CST Jan 20, 2026-6pm CST Jan 27, 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