Weather World
City of Chillicothe, ILChillicothe, IL 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Chillicothe, IL Weather Forecast
Chillicothe, IL Weather Forecast Date: 127 PM CDT Fri Sep 11 2026
The area/counties/county of: Peoria, including the city of Peoria.or toggle through each period.
This Afternoon... Mostly sunny. Near steady temperature around 80. South winds around 5 mph.
Tonight... Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 60s. Southeast winds around 5 mph.
Saturday... Mostly sunny. Highs in the upper 80s. Southwest winds 5 to 10 mph, becoming west in the afternoon.
Saturday Night... Partly cloudy. Lows in the lower 60s. North winds around 5 mph.
Sunday... Mostly sunny in the morning, then mostly cloudy with a chance of showers in the afternoon. Highs in the upper 70s. Northeast winds 5 to 10 mph. Chance of rain 40%.
Sunday Night... Mostly cloudy. A chance of showers. Lows in the upper 50s. Highs in the lower 80s. Chance of rain 40%.
Monday... Mostly cloudy. A chance of showers. Lows in the upper 50s. Highs in the lower 80s. Chance of rain 40%.
Monday Night... Partly cloudy. Not as cool with lows in the upper 60s.
Tuesday... Partly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 50%.
Tuesday Night... Showers likely with a chance of thunderstorms. Lows in the mid 60s. Chance of rain 70%.
Wednesday... Showers likely. Highs around 80. Lows in the mid 60s. Chance of rain 70%.
Wednesday Night... Showers likely. Highs around 80. Lows in the mid 60s. Chance of rain 70%.
POP = Probability of Precipitation
Chillicothe Radar Loop
Use the map search tool if you want to place a location marker on the radar map...