Areas of Dangerous Heat and Severe Thunderstorms

Dangerous heat will persist across the Southwest U.S. through Friday 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. Scattered strong to severe thunderstorms are possible across parts of the Northeast U.S. on Thursday. Damaging wind, hail, and a tornado or two are possible. Read More >

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

73°F

23°C

Humidity 81%
Wind Speed Calm
Barometer 29.97 in (1014.6 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 26 Aug 10:53 pm CDT
Extended Forecast for

4 Miles WSW Mascoutah IL

  • Tonight

    Tonight: Mostly clear, with a low around 67. Light northwest wind.

    Low: 67 °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 63. North wind around 6 mph becoming calm  in the evening.

    Low: 63 °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 61. Light southeast wind.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 89.

    High: 89 °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 94.

    High: 94 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 67. Light northwest wind.
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 63. North wind around 6 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 61. Light southeast wind.
Saturday
Sunny, with a high near 89.
Saturday Night
Mostly clear, with a low around 66.
Sunday
Sunny, with a high near 94.
Sunday Night
Mostly clear, with a low around 71.
Monday
Sunny and hot, with a high near 97.
Monday Night
Mostly clear, with a low around 75.
Tuesday
Sunny and hot, with a high near 97.
Tuesday Night
Mostly clear, with a low around 75.
Wednesday
Mostly sunny and hot, with a high near 97.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Mascoutah IL
 38.5°N 89.87°W (Elev. 449 ft)
9:56 pm CDT Aug 26, 2026
11pm CDT Aug 26, 2026-6pm CDT Sep 2, 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