Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Partly Cloudy

67°F

19°C

Humidity 77%
Wind Speed E 3 mph
Barometer 29.92 in
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 21 Jun 4:15 am CDT
Extended Forecast for

Edwardsville IL

Flood Watch June 21, 07:00am until June 22, 01:00am
Click here for hazard details and duration
Flood Watch
  • Today

    Today: Showers and thunderstorms likely, mainly after 1pm.  Mostly cloudy, with a high near 84. East wind 8 to 17 mph becoming southwest in the afternoon. Winds could gust as high as 28 mph.  Chance of precipitation is 70%.

    High: 84 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Tonight

    Tonight: Showers and thunderstorms, mainly before 11pm.  Low around 64. Southwest wind 8 to 11 mph becoming northwest after midnight. Winds could gust as high as 20 mph.  Chance of precipitation is 90%.

    Low: 64 °F

    T-storms then
    Chance
    T-storms

  • Monday

    Monday: Cloudy, then gradually becoming mostly sunny, with a high near 77. North wind around 11 mph.

    High: 77 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 61. Northeast wind 3 to 8 mph.

    Low: 61 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 81. Light northeast wind.

    High: 81 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 84.

    High: 84 °F

    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Thursday

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

    High: 83 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 84. East wind 8 to 17 mph becoming southwest in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 70%.
Tonight
Showers and thunderstorms, mainly before 11pm. Low around 64. Southwest wind 8 to 11 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 90%.
Monday
Cloudy, then gradually becoming mostly sunny, with a high near 77. North wind around 11 mph.
Monday Night
Partly cloudy, with a low around 61. Northeast wind 3 to 8 mph.
Tuesday
Mostly sunny, with a high near 81. Light northeast wind.
Tuesday Night
Mostly clear, with a low around 63.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Wednesday Night
Partly cloudy, with a low around 65.
Thursday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 20%.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
Edwardsville IL
 38.79°N 89.97°W (Elev. 558 ft)
3:11 am CDT Jun 21, 2026
4am CDT Jun 21, 2026-6pm CDT Jun 27, 2026
 
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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