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Severe Thunderstorms in the Upper Midwest; Heat Continues in the Southwest

Scattered severe thunderstorms may produce damaging winds, large hail, a tornado or two, and heavy rain across parts of the Upper Midwest, mainly this evening through Saturday. Very hot temperatures will continue through today across the Desert Southwest, which could break daily high temperature records. Read More >

Hazardous Weather Conditions

Current conditions at

Clinton Municipal Airport (KCWI)

Lat: 41.83°NLon: 90.33°WElev: 696ft.

A Few Clouds

71°F

22°C

Humidity 94%
Wind Speed SE 9 mph
Barometer 30.00 in (1015.7 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 8 Aug 6:56 am CDT
Extended Forecast for

De Witt IA

Heat Advisory August 8, 12:00pm until August 8, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Sunny, with a high near 93. Heat index values as high as 102. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 93 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 74. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 74 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 91. Heat index values as high as 101. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 91 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm after 1am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 70. South wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between 2 and 3 inches possible.

    Low: 70 °F

    Heavy Rain

  • Sunday

    Sunday: Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 85. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 85 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 69. Chance of precipitation is 70%. New rainfall amounts between 1 and 2 inches possible.

    Low: 69 °F

    Chance
    T-storms then
    Showers
    Likely

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 85. Chance of precipitation is 50%.

    High: 85 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.

    Low: 66 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.

    High: 85 °F

    Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 93. Heat index values as high as 102. South wind 10 to 15 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 74. South wind around 10 mph, with gusts as high as 20 mph.
Saturday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 91. Heat index values as high as 101. South wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday Night
Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm after 1am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 70. South wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between 2 and 3 inches possible.
Sunday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 85. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 69. Chance of precipitation is 70%. New rainfall amounts between 1 and 2 inches possible.
Monday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 85. Chance of precipitation is 50%.
Monday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Tuesday Night
Partly cloudy, with a low around 67.
Wednesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
Wednesday Night
Partly cloudy, with a low around 67.
Thursday
Mostly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
De Witt IA
 41.82°N 90.55°W (Elev. 653 ft)
Last Update:
6:47 am CDT Aug 8, 2025
Forecast Valid:
7am CDT Aug 8, 2025-6pm CDT Aug 14, 2025
 
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