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Current conditions at

Marshall County Airport (KC75)

Lat: 41.02°NLon: 89.39°WElev: 545ft.

Fair

77°F

25°C

Humidity 47%
Wind Speed SW 7 mph
Barometer 29.95 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 11 Oct 2:15 pm CDT
Extended Forecast for

Chillicothe IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 79. South wind around 5 mph.

    High: 79 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 64. South wind 3 to 7 mph.

    Low: 64 °F

    Increasing
    Clouds

  • Columbus Day

    Columbus Day: Sunny, with a high near 88. South southwest wind 7 to 13 mph, with gusts as high as 22 mph.

    High: 88 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 71. South southwest wind 9 to 11 mph, with gusts as high as 22 mph.

    Low: 71 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 86. West wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 86 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm, then showers after 1am. Low around 64. Calm wind. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 64 °F

    Showers
    Likely then
    Showers

  • Wednesday

    Wednesday: Showers likely, mainly before 1pm. Mostly cloudy, with a high near 74. North wind 3 to 6 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 74 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 57.

    Low: 57 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 70. Chance of precipitation is 80%.

    High: 70 °F

    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 79. South wind around 5 mph.
Tonight
Increasing clouds, with a low around 64. South wind 3 to 7 mph.
Columbus Day
Sunny, with a high near 88. South southwest wind 7 to 13 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 71. South southwest wind 9 to 11 mph, with gusts as high as 22 mph.
Tuesday
Sunny, with a high near 86. West wind 6 to 10 mph, with gusts as high as 18 mph.
Tuesday Night
Showers likely and possibly a thunderstorm, then showers after 1am. Low around 64. Calm wind. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 74. North wind 3 to 6 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 57.
Thursday
Showers and possibly a thunderstorm. High near 70. Chance of precipitation is 80%.
Thursday Night
A 50 percent chance of showers before 1am. Mostly cloudy, with a low around 50.
Friday
Partly sunny, with a high near 61. Breezy.
Friday Night
Partly cloudy, with a low around 38. Breezy.
Saturday
Sunny, with a high near 56.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Chillicothe IL
 40.92°N 89.52°W (Elev. 522 ft)
Last Update:
1:46 pm CDT Oct 11, 2026
Forecast Valid:
2pm CDT Oct 11, 2026-6pm CDT Oct 17, 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