National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Heat in the Southwest; Severe Thunderstorms from the Central Plains into the Ohio Valley

Dangerous heat will build across the Southwest U.S. through the end of the week with daytime highs of 110-115°F. Isolated to widely scattered severe storms are expected across parts of the central and southern High Plains, Great Lakes into the Ohio Valley, and parts of the Ozarks to Lower Mississippi Valley today. Read More >

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Partly Cloudy

90°F

32°C

Humidity 52%
Wind Speed NW 7 mph
Barometer 29.97 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 26 Aug 2:50 pm CDT
Extended Forecast for

2 Miles WSW Edwardsville IL

  • This Afternoon

    This Afternoon: Isolated showers and thunderstorms after 4pm. Mostly sunny, with a high near 91. Northwest wind around 9 mph. Chance of precipitation is 20%.

    High: 91 °F

    Isolated
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 66. North wind 5 to 8 mph becoming calm in the evening.

    Low: 66 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 87. Calm wind becoming north 5 to 8 mph in the morning.

    High: 87 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 62. North wind 5 to 7 mph becoming calm in the evening.

    Low: 62 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 85. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 85 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 95.

    High: 95 °F

    Sunny

Detailed Forecast

This Afternoon
Isolated showers and thunderstorms after 4pm. Mostly sunny, with a high near 91. Northwest wind around 9 mph. Chance of precipitation is 20%.
Tonight
Mostly clear, with a low around 66. North wind 5 to 8 mph becoming calm in the evening.
Thursday
Sunny, with a high near 87. Calm wind becoming north 5 to 8 mph in the morning.
Thursday Night
Mostly clear, with a low around 62. North wind 5 to 7 mph becoming calm in the evening.
Friday
Sunny, with a high near 85. Calm wind becoming northeast around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 60.
Saturday
Mostly sunny, with a high near 88.
Saturday Night
Partly cloudy, with a low around 67.
Sunday
Sunny, with a high near 95.
Sunday Night
Mostly clear, with a low around 72.
Monday
Sunny and hot, with a high near 97.
Monday Night
Mostly clear, with a low around 76.
Tuesday
Sunny and hot, with a high near 97.
Tuesday Night
Mostly clear, with a low around 75.
Wednesday
Sunny and hot, with a high near 97.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Edwardsville IL
 38.79°N 90°W (Elev. 551 ft)
Last Update:
2:56 pm CDT Aug 26, 2026
Forecast Valid:
3pm CDT Aug 26, 2026-6pm CDT Sep 2, 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