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

60°F

16°C

Humidity 52%
Wind Speed SE 7 mph
Barometer 29.93 in
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 12 Oct 10:15 pm CDT
Extended Forecast for

Chillicothe IL

  • Tonight

    Tonight: A 10 percent chance of showers after 5am. Mostly cloudy, with a low around 58. South southeast wind around 7 mph.

    Low: 58 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Columbus Day

    Columbus Day: A 20 percent chance of showers before 10am. Mostly cloudy, with a high near 77. South southeast wind 3 to 6 mph.

    High: 77 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 57. Light north northeast wind.

    Low: 57 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 76. Northeast wind 3 to 6 mph.

    High: 76 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 56. Northeast wind around 6 mph.

    Low: 56 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 70. East northeast wind around 6 mph.

    High: 70 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 51. East wind 3 to 6 mph.

    Low: 51 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 10 percent chance of showers after 5am. Mostly cloudy, with a low around 58. South southeast wind around 7 mph.
Columbus Day
A 20 percent chance of showers before 10am. Mostly cloudy, with a high near 77. South southeast wind 3 to 6 mph.
Monday Night
Mostly cloudy, with a low around 57. Light north northeast wind.
Tuesday
Partly sunny, with a high near 76. Northeast wind 3 to 6 mph.
Tuesday Night
Mostly cloudy, with a low around 56. Northeast wind around 6 mph.
Wednesday
Partly sunny, with a high near 70. East northeast wind around 6 mph.
Wednesday Night
Mostly clear, with a low around 51. East wind 3 to 6 mph.
Thursday
Mostly sunny, with a high near 75.
Thursday Night
Partly cloudy, with a low around 57.
Friday
Partly sunny, with a high near 79.
Friday Night
A chance of showers. Mostly cloudy, with a low around 60.
Saturday
A chance of showers. Mostly sunny, with a high near 75.
Saturday Night
A chance of showers. Partly cloudy, with a low around 50.
Sunday
Sunny, with a high near 68.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chillicothe IL
 40.91°N 89.49°W (Elev. 472 ft)
Last Update:
10:06 pm CDT Oct 12, 2025
Forecast Valid:
10pm CDT Oct 12, 2025-6pm CDT Oct 19, 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