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

Tropical Moisture Will Bring Heavy to Excessive Rainfall with Possible Flooding This Week

Tropical moisture from the remnants of Odalys and Hurricane Polo will surge over the southwest into the central U.S. this week with several days of heavy to excessive rainfall which may bring limited to considerable flooding. Flood Watches have been issued through Wednesday in the southwest U.S. and moderate risk outlooks have been issued today through Thursday. Read More >

Current conditions at

Clinton Municipal Airport (KCWI)

Lat: 41.83°NLon: 90.33°WElev: 696ft.

Fair

69°F

21°C

Humidity 61%
Wind Speed NE 5 mph
Barometer 30.04 in (1017.5 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 28 Sep 6:56 pm CDT
Extended Forecast for

De Witt IA

  • Tonight

    Tonight: Clear, with a low around 51. Calm wind.

    Low: 51 °F

    Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 77. Calm wind becoming south around 5 mph in the afternoon.

    High: 77 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 64. South wind around 5 mph.

    Low: 64 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Showers, with thunderstorms also possible after 1pm. High near 73. South wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 73 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers. Low around 65. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 65 °F

    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 70. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

    High: 70 °F

    Showers

  • Thursday Night

    Thursday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 54. Chance of precipitation is 60%.

    Low: 54 °F

    Showers
    Likely

  • Friday

    Friday: Partly sunny, with a high near 65.

    High: 65 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 51. Calm wind.
Tuesday
Mostly sunny, with a high near 77. Calm wind becoming south around 5 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 64. South wind around 5 mph.
Wednesday
Showers, with thunderstorms also possible after 1pm. High near 73. South wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Showers. Low around 65. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday
Showers and possibly a thunderstorm. High near 70. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Thursday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 54. Chance of precipitation is 60%.
Friday
Partly sunny, with a high near 65.
Friday Night
Partly cloudy, with a low around 50.
Saturday
A 30 percent chance of showers after 1pm. Partly sunny, with a high near 66.
Saturday Night
Mostly cloudy, with a low around 53.
Sunday
Mostly sunny, with a high near 65.
Sunday Night
Mostly clear, with a low around 48.
Monday
Sunny, with a high near 61.
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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:
7:41 pm CDT Sep 28, 2026
Forecast Valid:
7pm CDT Sep 28, 2026-6pm CDT Oct 5, 2026
 
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