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

77°F

25°C

Humidity 74%
Wind Speed E 6 mph
Barometer 29.99 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 30 Jul 7:45 pm CDT
Extended Forecast for

Edwardsville IL

  • Tonight

    Tonight: Partly cloudy, with a low around 68. Southeast wind around 6 mph.

    Low: 68 °F

    Partly Cloudy

  • Friday

    Friday: Showers and thunderstorms likely, mainly before 2pm. Some of the storms could produce heavy rainfall. Increasing clouds, with a high near 82. Southeast wind 7 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    High: 82 °F

    Heavy Rain

  • Friday Night

    Friday Night: Showers and thunderstorms before 4am, then a chance of showers. Low around 69. Southeast wind 10 to 14 mph becoming southwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 80%.

    Low: 69 °F

    Showers

  • Saturday

    Saturday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 78. West wind 11 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.

    High: 78 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. North wind 13 to 15 mph. Chance of precipitation is 40%.

    Low: 66 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 80.

    High: 80 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Monday

    Monday: A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny
    then Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 68. Southeast wind around 6 mph.
Friday
Showers and thunderstorms likely, mainly before 2pm. Some of the storms could produce heavy rainfall. Increasing clouds, with a high near 82. Southeast wind 7 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Friday Night
Showers and thunderstorms before 4am, then a chance of showers. Low around 69. Southeast wind 10 to 14 mph becoming southwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 80%.
Saturday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 78. West wind 11 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. North wind 13 to 15 mph. Chance of precipitation is 40%.
Sunday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 80.
Sunday Night
Mostly clear, with a low around 64.
Monday
A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 83.
Monday Night
Mostly clear, with a low around 66.
Tuesday
A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 86.
Tuesday Night
Mostly clear, with a low around 68.
Wednesday
Sunny, with a high near 89.
Wednesday Night
Mostly clear, with a low around 71.
Thursday
Sunny, with a high near 90.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Edwardsville IL
 38.79°N 89.97°W (Elev. 558 ft)
Last Update:
5:31 pm CDT Jul 30, 2026
Forecast Valid:
8pm CDT Jul 30, 2026-6pm CDT Aug 6, 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