Chillicothe, IL Weather Forecast
Local 7-day forecast
Partly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Chillicothe, IL in one place.
Partly sunny, with a high near 68. Northeast wind 7 to 12 mph, with gusts as high as 16 mph.
Local Weather Overview
This forecast page for Chillicothe, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Sep 22, 2026 9:42 AM CDT.
The active forecast window currently covers Sep 23 to Sep 28, 2026 for Chillicothe, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 23 to Sep 28, 2026
- Latest sync
- Sep 22, 2026 9:42 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Chillicothe
Monday looks like the warmest upcoming period in Chillicothe at 78 degrees F.
Friday Night is the coolest period ahead with temperatures near 51 degrees F.
The strongest winds are forecast for Wednesday at about 7 to 12 mph NE.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 22, 2026 9:42 AM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- ILX
- Radar station
- KILX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly cloudy, with a low around 54. Northeast wind 2 to 9 mph, with gusts as high as 16 mph.
Partly sunny, with a high near 70. East northeast wind around 5 mph.
Mostly cloudy, with a low around 55. East northeast wind around 3 mph.
Partly sunny, with a high near 71. East wind 2 to 6 mph.
Mostly cloudy, with a low around 51.
Partly sunny, with a high near 70.
A slight chance of rain showers after 1am. Mostly cloudy, with a low around 54.
A slight chance of rain showers before 7am. Partly sunny, with a high near 74.
Partly cloudy, with a low around 58.
Mostly sunny, with a high near 78.
Partly cloudy, with a low around 61.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 23
|
Partly Sunny
|
68°F |
7 to 12 mph
NE
|
|
Wednesday Night
Sep 23
|
Mostly Cloudy
|
54°F |
2 to 9 mph
NE
|
|
Thursday
Sep 24
|
Partly Sunny
|
70°F |
5 mph
ENE
|
|
Thursday Night
Sep 24
|
Mostly Cloudy
|
55°F |
3 mph
ENE
|
|
Friday
Sep 25
|
Partly Sunny
|
71°F |
2 to 6 mph
E
|
|
Friday Night
Sep 25
|
Mostly Cloudy
|
51°F |
5 mph
E
|
|
Saturday
Sep 26
|
Partly Sunny
|
70°F |
1 to 5 mph
ESE
|
|
Saturday Night
Sep 26
|
Mostly Cloudy then Slight Chance Rain Showers
|
54°F |
3 mph
SE
|
|
Sunday
Sep 27
|
Slight Chance Rain Showers then Partly Sunny
|
74°F |
3 mph
SSE
|
|
Sunday Night
Sep 27
|
Partly Cloudy
|
58°F |
2 mph
SE
|
|
Monday
Sep 28
|
Mostly Sunny
|
78°F |
1 to 5 mph
SE
|
|
Monday Night
Sep 28
|
Partly Cloudy
|
61°F |
5 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Chillicothe.