Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Hazardous Weather Conditions

Current conditions at

Clinton Municipal Airport (KCWI)

Lat: 41.83°NLon: 90.33°WElev: 696ft.

Fair

2°F

-17°C

Humidity 80%
Wind Speed SW 8 mph
Barometer 30.34 in (1029.5 mb)
Dewpoint -3°F (-19°C)
Visibility 10.00 mi
Wind Chill-12°F (-24°C)
Last update 19 Jan 10:56 pm CST
Extended Forecast for

De Witt IA

  • Tonight

    Tonight: Mostly clear, with a steady temperature around 4. Wind chill values as low as -10. Southwest wind 5 to 10 mph.

    Low: 4 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 25. Wind chill values as low as -10. Southwest wind 5 to 10 mph becoming southeast in the afternoon.

    High: 25 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Snow likely.  Mostly cloudy, with a steady temperature around 21. Southeast wind 5 to 10 mph becoming west after midnight.  Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: 21 °F

    Snow Likely

  • Wednesday

    Wednesday: Mostly sunny, with a high near 29. West wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 29 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 11.

    Low: 11 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 21.

    High: 21 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around -9.

    Low: -9 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny and cold, with a high near -1.

    High: -1 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -13.

    Low: -13 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a steady temperature around 4. Wind chill values as low as -10. Southwest wind 5 to 10 mph.
Tuesday
Increasing clouds, with a high near 25. Wind chill values as low as -10. Southwest wind 5 to 10 mph becoming southeast in the afternoon.
Tuesday Night
Snow likely. Mostly cloudy, with a steady temperature around 21. Southeast wind 5 to 10 mph becoming west after midnight. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Wednesday
Mostly sunny, with a high near 29. West wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 11.
Thursday
Mostly sunny, with a high near 21.
Thursday Night
Mostly cloudy, with a low around -9.
Friday
Partly sunny and cold, with a high near -1.
Friday Night
Mostly cloudy, with a low around -13.
Saturday
Mostly sunny and cold, with a high near 2.
Saturday Night
Mostly cloudy, with a low around -8.
Sunday
Mostly sunny, with a high near 12.
Sunday Night
Partly cloudy, with a low around 2.
Monday
Mostly sunny, with a high near 20.
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ABOUT THIS FORECAST

 
Point Forecast:
De Witt IA
 41.82°N 90.55°W (Elev. 653 ft)
11:21 pm CST Jan 19, 2026
11pm CST Jan 19, 2026-6pm CST Jan 26, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database