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

Clinton Municipal Airport (KCWI)

Lat: 41.83°NLon: 90.33°WElev: 696ft.

Fair

12°F

-11°C

Humidity 80%
Wind Speed Calm
Barometer 30.26 in (1026.4 mb)
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Last update 23 Feb 10:56 pm CST
Extended Forecast for

Savanna IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 15. Light southwest wind becoming south 5 to 10 mph after midnight. Winds could gust as high as 20 mph.

    Low: 15 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Cloudy, with a high near 40. South wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 30 mph.

    High: 40 °F

    Cloudy

  • Tuesday Night

    Tuesday Night: Cloudy during the early evening, then gradual clearing, with a low around 19. Northwest wind around 10 mph, with gusts as high as 25 mph.

    Low: 19 °F

    Gradual
    Clearing

  • Wednesday

    Wednesday: Mostly sunny, with a high near 34. Northwest wind 5 to 10 mph.

    High: 34 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 21. New snow accumulation of 1 to 2 inches possible.

    Low: 21 °F

    Chance Snow

  • Thursday

    Thursday: Mostly sunny, with a high near 41.

    High: 41 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 24.

    Low: 24 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 27.

    Low: 27 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 15. Light southwest wind becoming south 5 to 10 mph after midnight. Winds could gust as high as 20 mph.
Tuesday
Cloudy, with a high near 40. South wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 30 mph.
Tuesday Night
Cloudy during the early evening, then gradual clearing, with a low around 19. Northwest wind around 10 mph, with gusts as high as 25 mph.
Wednesday
Mostly sunny, with a high near 34. Northwest wind 5 to 10 mph.
Wednesday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 21. New snow accumulation of 1 to 2 inches possible.
Thursday
Mostly sunny, with a high near 41.
Thursday Night
Mostly clear, with a low around 24.
Friday
Mostly sunny, with a high near 57.
Friday Night
Mostly clear, with a low around 27.
Saturday
Partly sunny, with a high near 41.
Saturday Night
Mostly cloudy, with a low around 17.
Sunday
A 40 percent chance of snow. Partly sunny, with a high near 32.
Sunday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 18.
Monday
A 30 percent chance of snow. Partly sunny, with a high near 34.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Savanna IL
 42.09°N 90.13°W (Elev. 623 ft)
Last Update:
10:42 pm CST Feb 23, 2026
Forecast Valid:
11pm CST Feb 23, 2026-6pm CST Mar 2, 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