Extreme Heat Continues; Severe Thunderstorms into Upper Midwest; Strong Bering Sea Storm

Wildfires and poor air quality continue for the Pacific Northwest, Rockies and extended into the Plains. Severe thunderstorms possible for the northern Plains and upper Midwest on Monday along a frontal boundary. Another boundary will focus showers and thunderstorms for the eastern seaboard with localized heavy rainfall possible. For Alaska, a strong Bering Sea storm will bring winds and rainfall. Read More >

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Partly Cloudy

73°F

23°C

Humidity 78%
Wind Speed N 6 mph
Barometer 29.89 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 2 Aug 8:50 pm CDT
Extended Forecast for

4 Miles ENE Chesterfield IL

  • Tonight

    Tonight: Mostly clear, with a low around 60. North wind around 5 mph becoming calm  in the evening.

    Low: 60 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 83. Light northeast wind.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 61. Light southeast wind.

    Low: 61 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 85. Light southeast wind.

    High: 85 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 62. Light east wind.

    Low: 62 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am.  Partly cloudy, with a low around 66.

    Low: 66 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 1pm, then a slight chance of showers and thunderstorms after 1pm.  Partly sunny, with a high near 83. Chance of precipitation is 60%.

    High: 83 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am.  Mostly cloudy, with a low around 65.

    Low: 65 °F

    Slight Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 60. North wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 83. Light northeast wind.
Monday Night
Clear, with a low around 61. Light southeast wind.
Tuesday
Sunny, with a high near 85. Light southeast wind.
Tuesday Night
Mostly clear, with a low around 62. Light east wind.
Wednesday
Mostly sunny, with a high near 86.
Wednesday Night
A 50 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 66.
Thursday
Showers likely and possibly a thunderstorm before 1pm, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 83. Chance of precipitation is 60%.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 65.
Friday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
Friday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 86.
Saturday Night
Partly cloudy, with a low around 68.
Sunday
Mostly sunny, with a high near 89.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE Chesterfield IL
 39.28°N 90°W (Elev. 600 ft)
1:26 pm CDT Aug 2, 2026
9pm CDT Aug 2, 2026-6pm CDT Aug 9, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database