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

29°F

-2°C

Humidity 70%
Wind Speed Calm
Barometer 30.11 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Last update 21 Feb 2:15 am CST
Extended Forecast for

Edwardsville IL

  • Overnight

    Overnight: A chance of flurries after 5am. Partly cloudy, with a low around 27. North wind around 6 mph.

    Low: 27 °F

    Chance
    Flurries

  • Saturday

    Saturday: A chance of flurries between 7am and 11am. Mostly cloudy, then gradually becoming sunny, with a high near 41. Northwest wind 6 to 10 mph.

    High: 41 °F

    Chance
    Flurries

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 22. Northwest wind 10 to 17 mph, with gusts as high as 24 mph.

    Low: 22 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 33. Breezy, with a northwest wind 17 to 22 mph, with gusts as high as 32 mph.

    High: 33 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 17. Northwest wind 15 to 17 mph, with gusts as high as 25 mph.

    Low: 17 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 33.

    High: 33 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 20.

    Low: 20 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 52.

    High: 52 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A chance of flurries after 5am. Partly cloudy, with a low around 27. North wind around 6 mph.
Saturday
A chance of flurries between 7am and 11am. Mostly cloudy, then gradually becoming sunny, with a high near 41. Northwest wind 6 to 10 mph.
Saturday Night
Mostly clear, with a low around 22. Northwest wind 10 to 17 mph, with gusts as high as 24 mph.
Sunday
Sunny, with a high near 33. Breezy, with a northwest wind 17 to 22 mph, with gusts as high as 32 mph.
Sunday Night
Partly cloudy, with a low around 17. Northwest wind 15 to 17 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 33.
Monday Night
Mostly clear, with a low around 20.
Tuesday
Partly sunny, with a high near 52.
Tuesday Night
Mostly cloudy, with a low around 40.
Wednesday
Partly sunny, with a high near 60.
Wednesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 37.
Thursday
A slight chance of rain and snow. Mostly sunny, with a high near 52. Chance of precipitation is 20%.
Thursday Night
Mostly clear, with a low around 32.
Friday
Sunny, with a high near 61.
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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:
12:26 am CST Feb 21, 2026
Forecast Valid:
2am CST Feb 21, 2026-6pm CST Feb 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