Strong Storms and Heavy Rainfall Threats; Dangerous Heat for Southern Plains into the Southwest

Thunderstorms, some severe, will impact areas of the Plains into the Midwest today. Rainfall can be locally heavy as well from these storms with isolated instances of flash flooding. Monsoonal flow will enhance rainfall across the Four Corners into the central Rockies today. Meanwhile, summer heat continues for the southern Plains, Southwest into southern California. Read More >

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

84°F

29°C

Humidity 59%
Wind Speed SE 3 mph
Barometer 29.99 in (1015.3 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 25 Aug 6:53 pm CDT
Extended Forecast for

2 Miles WSW Belleville IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 69. East wind around 5 mph becoming calm  in the evening.

    Low: 69 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 90. Calm wind becoming southwest 5 to 7 mph in the morning.

    High: 90 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly before 11pm.  Mostly cloudy during the early evening, then gradual clearing, with a low around 66. West wind around 5 mph becoming calm  in the evening.

    Low: 66 °F

    Chance
    T-storms then
    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 87. North wind 3 to 8 mph.

    High: 87 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 66. North wind around 6 mph becoming calm  in the evening.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 87.

    High: 87 °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 89.

    High: 89 °F

    Sunny

  • Saturday Night

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

    Low: 67 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 69. East wind around 5 mph becoming calm in the evening.
Wednesday
Partly sunny, with a high near 90. Calm wind becoming southwest 5 to 7 mph in the morning.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly before 11pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 66. West wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 87. North wind 3 to 8 mph.
Thursday Night
Mostly clear, with a low around 66. North wind around 6 mph becoming calm in the evening.
Friday
Sunny, with a high near 87.
Friday Night
Mostly clear, with a low around 62.
Saturday
Sunny, with a high near 89.
Saturday Night
Partly cloudy, with a low around 67.
Sunday
Mostly sunny, with a high near 93.
Sunday Night
Mostly clear, with a low around 72.
Monday
Mostly sunny, with a high near 95.
Monday Night
A 20 percent chance of showers. Partly cloudy, with a low around 74.
Tuesday
A 20 percent chance of showers. Mostly sunny, with a high near 93.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Belleville IL
 38.53°N 90.04°W (Elev. 554 ft)
5:56 pm CDT Aug 25, 2026
7pm CDT Aug 25, 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