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

Marshall County Airport (KC75)

Lat: 41.02°NLon: 89.39°WElev: 545ft.

Fair

27°F

-3°C

Humidity 75%
Wind Speed SW 7 mph
Barometer 30.29 in
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 12 Jan 12:55 am CST
Extended Forecast for

Chillicothe IL

  • Overnight

    Overnight: Increasing clouds, with a low around 24. Southwest wind around 10 mph, with gusts as high as 23 mph.

    Low: 24 °F

    Increasing
    Clouds

  • Monday

    Monday: Cloudy through mid morning, then gradual clearing, with a high near 45. Southwest wind 7 to 9 mph, with gusts as high as 21 mph.

    High: 45 °F

    Gradual
    Clearing

  • Monday Night

    Monday Night: Increasing clouds, with a low around 33. Southwest wind 6 to 9 mph, with gusts as high as 18 mph.

    Low: 33 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, with a high near 52. West wind 10 to 14 mph, with gusts as high as 23 mph.

    High: 52 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 33. West northwest wind 9 to 11 mph, with gusts as high as 21 mph.

    Low: 33 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of snow after noon. Mostly cloudy, with a high near 38. Breezy, with a northwest wind 11 to 21 mph, with gusts as high as 36 mph.

    High: 38 °F

    Mostly Cloudy
    then Chance
    Snow and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 15. North wind 9 to 16 mph, with gusts as high as 31 mph.

    Low: 15 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 30.

    High: 30 °F

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of snow. Mostly cloudy, with a low around 24.

    Low: 24 °F

    Chance Snow

Detailed Forecast

Overnight
Increasing clouds, with a low around 24. Southwest wind around 10 mph, with gusts as high as 23 mph.
Monday
Cloudy through mid morning, then gradual clearing, with a high near 45. Southwest wind 7 to 9 mph, with gusts as high as 21 mph.
Monday Night
Increasing clouds, with a low around 33. Southwest wind 6 to 9 mph, with gusts as high as 18 mph.
Tuesday
Partly sunny, with a high near 52. West wind 10 to 14 mph, with gusts as high as 23 mph.
Tuesday Night
Mostly cloudy, with a low around 33. West northwest wind 9 to 11 mph, with gusts as high as 21 mph.
Wednesday
A 30 percent chance of snow after noon. Mostly cloudy, with a high near 38. Breezy, with a northwest wind 11 to 21 mph, with gusts as high as 36 mph.
Wednesday Night
Partly cloudy, with a low around 15. North wind 9 to 16 mph, with gusts as high as 31 mph.
Thursday
Sunny, with a high near 30.
Thursday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 24.
Friday
A 40 percent chance of snow after noon. Mostly cloudy, with a high near 37.
Friday Night
A chance of snow. Mostly cloudy, with a low around 18.
Saturday
Mostly cloudy, with a high near 24.
Saturday Night
Partly cloudy, with a low around 10.
Sunday
Mostly sunny, with a high near 25.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Chillicothe IL
 40.94°N 89.51°W (Elev. 499 ft)
Last Update:
10:57 pm CST Jan 11, 2026
Forecast Valid:
1am CST Jan 12, 2026-6pm CST Jan 18, 2026
 
Forecast Discussion
 
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Additional Resources

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