National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Tropical Moisture Brings Slight Risk of Excessive Rainfall to the Southwest; Strong to Locally Severe Storms on the Plains

Heavy rain and flash flooding are possible across portions of the Southwest through Friday, where Flood Watches are in effect. Strong to locally severe thunderstorms are possible today across portions of the Plains. A tropical wave is causing heavy rainfall in Puerto Rico and the Virgin Islands, which may cause urban and small stream flooding and landslides today. Read More >

Hazardous Weather Conditions

Current conditions at

Clinton Municipal Airport (KCWI)

Lat: 41.83°NLon: 90.33°WElev: 696ft.

Fair

84°F

29°C

Humidity 41%
Wind Speed W 12 mph
Barometer 30.07 in (1018.1 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 18 Sep 1:56 pm CDT
Extended Forecast for

De Witt IA

  • This Afternoon

    This Afternoon: A 30 percent chance of showers. Partly sunny, with a high near 86. South wind around 5 mph.

    High: 86 °F

    Chance
    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms before 3am, then showers likely and possibly a thunderstorm between 3am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 60. East wind around 5 mph becoming southwest after midnight. Chance of precipitation is 60%.

    Low: 60 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81. East wind around 5 mph becoming south in the afternoon. Chance of precipitation is 30%.

    High: 81 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 4am, then showers likely after 4am. Partly cloudy, with a low around 60. East wind around 5 mph becoming calm. Chance of precipitation is 60%.

    Low: 60 °F

    Showers
    Likely

  • Saturday

    Saturday: A 30 percent chance of showers after 1pm. Partly sunny, with a high near 80.

    High: 80 °F

    Partly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 61.

    Low: 61 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Sunday

    Sunday: A 50 percent chance of showers. Partly sunny, with a high near 77.

    High: 77 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61.

    Low: 61 °F

    Chance
    T-storms

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 80. Chance of precipitation is 30%.

    High: 80 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

This Afternoon
A 30 percent chance of showers. Partly sunny, with a high near 86. South wind around 5 mph.
Tonight
A chance of showers and thunderstorms before 3am, then showers likely and possibly a thunderstorm between 3am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 60. East wind around 5 mph becoming southwest after midnight. Chance of precipitation is 60%.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81. East wind around 5 mph becoming south in the afternoon. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 4am, then showers likely after 4am. Partly cloudy, with a low around 60. East wind around 5 mph becoming calm. Chance of precipitation is 60%.
Saturday
A 30 percent chance of showers after 1pm. Partly sunny, with a high near 80.
Saturday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 61.
Sunday
A 50 percent chance of showers. Partly sunny, with a high near 77.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
Monday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 80. Chance of precipitation is 30%.
Monday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 61.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 78.
Tuesday Night
Mostly cloudy, with a low around 58.
Wednesday
Mostly sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
De Witt IA
 41.82°N 90.55°W (Elev. 653 ft)
Last Update:
2:00 pm CDT Sep 18, 2025
Forecast Valid:
2pm CDT Sep 18, 2025-6pm CDT Sep 24, 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