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January 17th, 2026 :: 4:57 pm CST   

Local Weather Report for
Chillicothe
Illinois, United States

 Chillicothe Weather Forecast Summary  
 
Today
Jan 17th
Sunday
Jan 18th
Monday
Jan 19th
Tuesday
Jan 20th
Wednesday
Jan 21st
Cloudy Cloudy Cloudy Cloudy Cloudy
19°F
23°F
12°F
11°F
4°F
29°F
9°F
33°F
21°F
 
 Chillicothe Detailed Weather Forecast  
 
Saturday, January 17th, 2026
Evening Temperature: 16°F
Cloudy. Windy at times.
Sunday, January 18th, 2026
Overnight Temperature: 12°F
Cloudy. Windy at times.
Morning Temperature: 19°F
Cloudy. Windy at times.
Afternoon Temperature: 22°F
Cloudy.
Evening Temperature: 18°F
Cloudy with a slight chance of flurries. Windy.
Monday, January 19th, 2026
Overnight Temperature: 6°F
Cloudy. Windy.
Morning Temperature: 8°F
Sunny. Windy.
Afternoon Temperature: 10°F
Sunny. Windy at times.
Evening Temperature: 9°F
Clear. Windy at times.
Tuesday, January 20th, 2026
Overnight Temperature: 9°F
Clear.
Morning Temperature: 21°F
Cloudy. Windy.
Afternoon Temperature: 28°F
Cloudy. Windy.
Evening Temperature: 29°F
Cloudy. Windy.
Wednesday, January 21st, 2026
Overnight Temperature: 33°F
Cloudy. Windy.
Morning Temperature: 29°F
Cloudy. Windy.
Afternoon Temperature: 25°F
Cloudy. Windy at times.
Evening Temperature: 22°F
Cloudy. Windy at times.
Thursday, January 22nd, 2026
Overnight Temperature: 19°F
Clear.
Morning Temperature: 28°F
Sunny. Windy at times.
Afternoon Temperature: 30°F
Sunny. Windy at times.
Evening Temperature: 30°F
A mix of cloudy and clear skies. Windy.
Friday, January 23rd, 2026
Overnight Temperature: 29°F
Cloudy. Windy at times.
Morning Temperature: 24°F
Cloudy. Windy at times.
Afternoon Temperature: 18°F
Cloudy. Windy at times.
Evening Temperature: 12°F
A mix of cloudy and clear skies. Windy at times.
Saturday, January 24th, 2026
Overnight Temperature: 10°F
Cloudy. Windy at times.
Morning Temperature: 16°F
Cloudy with a slight chance of flurries. Windy.
Afternoon Temperature: 15°F
Cloudy with flurries likely. Windy at times.
Evening Temperature: 15°F
Cloudy with flurries likely.
Sunday, January 25th, 2026
Overnight Temperature: 11°F
A mix of cloudy and clear skies.
Morning Temperature: 14°F
Cloudy. Windy at times.
Afternoon Temperature: 11°F
A mix of cloud and sun.
Evening Temperature: 12°F
Cloudy.





 

  [ Local Weather Report ]
Lacon, IL 
3:55 PM  16°F
Mostly Cloudy
 
Henry, IL 
 
Washington, IL 
 
West Peoria, IL 
3:54 PM  16°F
light snow
 
Eureka, IL 
 
East Peoria, IL 
3:54 PM  16°F
light snow
 
Peoria, IL 
3:54 PM  16°F
light snow
 
Marquette Heights, IL 
3:54 PM  16°F
light snow
 
Pekin, IL 
 
Farmington, IL 

 
This WeatherCity Weather Forecast for Chillicothe, Illinois, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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