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

Hazardous Weather Conditions

Current conditions at

Marshall County Airport (KC75)

Lat: 41.02°NLon: 89.39°WElev: 545ft.

Partly Cloudy

79°F

26°C

Humidity 37%
Wind Speed SW 16 G 22 mph
Barometer 29.52 in
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 4 May 4:15 pm CDT
Extended Forecast for

Chillicothe IL

  • Tonight

    Tonight: A chance of showers and thunderstorms. Mostly cloudy, with a low around 50. Southwest wind 6 to 16 mph becoming north after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 50%.

    Low: 50 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 40 percent chance of showers. Mostly cloudy, with a high near 59. North wind around 7 mph.

    High: 59 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 43. North wind 5 to 7 mph becoming calm after midnight.

    Low: 43 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Partly sunny, with a high near 57. Calm wind becoming north northwest 5 to 8 mph in the morning. Winds could gust as high as 16 mph.

    High: 57 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 39. Northwest wind around 6 mph becoming calm in the evening.

    Low: 39 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 62. Calm wind becoming west 5 to 9 mph in the morning. Winds could gust as high as 18 mph.

    High: 62 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 47. South southwest wind around 6 mph.

    Low: 47 °F

    Partly Cloudy

  • Friday

    Friday: A 30 percent chance of showers after 1pm. Partly sunny, with a high near 67.

    High: 67 °F

    Partly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of showers and thunderstorms. Mostly cloudy, with a low around 50. Southwest wind 6 to 16 mph becoming north after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 50%.
Tuesday
A 40 percent chance of showers. Mostly cloudy, with a high near 59. North wind around 7 mph.
Tuesday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 43. North wind 5 to 7 mph becoming calm after midnight.
Wednesday
Partly sunny, with a high near 57. Calm wind becoming north northwest 5 to 8 mph in the morning. Winds could gust as high as 16 mph.
Wednesday Night
Mostly cloudy, with a low around 39. Northwest wind around 6 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 62. Calm wind becoming west 5 to 9 mph in the morning. Winds could gust as high as 18 mph.
Thursday Night
Partly cloudy, with a low around 47. South southwest wind around 6 mph.
Friday
A 30 percent chance of showers after 1pm. Partly sunny, with a high near 67.
Friday Night
Partly cloudy, with a low around 45.
Saturday
Sunny, with a high near 73.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
A chance of showers. Partly sunny, with a high near 67.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 47.
Monday
Mostly 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:
3:36 pm CDT May 4, 2026
Forecast Valid:
4pm CDT May 4, 2026-6pm CDT May 11, 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