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Areas of Severe Thunderstorms and Heat

Scattered severe thunderstorms and excessive rainfall are possible today in the Mid Atlantic, posing a risk for damaging winds and isolated flash flooding. Extreme Heat Warnings are in effect today for northeast Texas into southern Oklahoma and Arkansas. Extreme Heat Warnings are also in effect for the Desert Southwest today into Sunday. Read More >

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

A Few Clouds

83°F

28°C

Humidity 63%
Wind Speed E 12 mph
Barometer 30.01 in (1015.8 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 20 Aug 5:53 pm CDT
Extended Forecast for

Scott Air Force Base / Belleville IL

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, mostly clear, with a low around 64. North wind around 6 mph becoming calm in the evening.

    Low: 64 °F

    Mostly Clear
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 8am. Otherwise, sunny, with a high near 85. Calm wind.

    High: 85 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 68. Calm wind.

    Low: 68 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 85. Light northwest wind increasing to 5 to 10 mph in the morning.

    High: 85 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 64. North wind 5 to 7 mph becoming calm in the evening.

    Low: 64 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

Detailed Forecast

Tonight
Patchy fog after 3am. Otherwise, mostly clear, with a low around 64. North wind around 6 mph becoming calm in the evening.
Friday
Patchy fog before 8am. Otherwise, sunny, with a high near 85. Calm wind.
Friday Night
Mostly clear, with a low around 68. Calm wind.
Saturday
Mostly sunny, with a high near 85. Light northwest wind increasing to 5 to 10 mph in the morning.
Saturday Night
Mostly clear, with a low around 64. North wind 5 to 7 mph becoming calm in the evening.
Sunday
Sunny, with a high near 82.
Sunday Night
Partly cloudy, with a low around 61.
Monday
Mostly sunny, with a high near 81.
Monday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63.
Tuesday
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 85.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 67.
Wednesday
A 20 percent chance of showers. Partly sunny, with a high near 87.
Wednesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 68.
Thursday
Mostly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Scott Air Force Base / Belleville IL
 38.54°N 89.84°W (Elev. 417 ft)
Last Update:
5:56 pm CDT Aug 20, 2026
Forecast Valid:
6pm CDT Aug 20, 2026-6pm CDT Aug 27, 2026
 
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Additional Resources

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Chance of Precipitation