Areas of Dangerous Heat and Severe Thunderstorms

Dangerous heat will build across the Southwest U.S. through the end of the week with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week before returning over much of the Plains into next week. Severe thunderstorms are expected across parts of the central and southern High Plains, central Great Lakes, and Ozarks Wednesday. Read More >

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Mostly Cloudy

70°F

21°C

Humidity 88%
Wind Speed Calm
Barometer 30.00 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 26 Aug 5:15 am CDT
Extended Forecast for

Edwardsville IL

  • Today

    Today: Mostly sunny, with a high near 91. Calm wind becoming southwest 5 to 8 mph in the morning.

    High: 91 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 66. West wind 5 to 7 mph becoming calm  in the evening.

    Low: 66 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 86. Light northwest wind increasing to 5 to 9 mph in the morning.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 63. North wind 5 to 7 mph becoming calm  in the evening.

    Low: 63 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 85. Calm wind becoming northeast around 6 mph in the afternoon.

    High: 85 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Saturday Night

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

    Low: 66 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 91. Calm wind becoming southwest 5 to 8 mph in the morning.
Tonight
Partly cloudy, with a low around 66. West wind 5 to 7 mph becoming calm in the evening.
Thursday
Sunny, with a high near 86. Light northwest wind increasing to 5 to 9 mph in the morning.
Thursday Night
Mostly clear, with a low around 63. North wind 5 to 7 mph becoming calm in the evening.
Friday
Sunny, with a high near 85. Calm wind becoming northeast around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 62.
Saturday
Sunny, with a high near 87.
Saturday Night
Mostly clear, with a low around 66.
Sunday
Sunny, with a high near 93.
Sunday Night
Mostly clear, with a low around 73.
Monday
Sunny, with a high near 95.
Monday Night
Mostly clear, with a low around 76.
Tuesday
Mostly sunny, with a high near 94.
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ABOUT THIS FORECAST

 
Point Forecast:
Edwardsville IL
 38.81°N 89.97°W (Elev. 499 ft)
5:21 am CDT Aug 26, 2026
5am CDT Aug 26, 2026-6pm CDT Sep 1, 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