Chillicothe, IL Weather Tomorrow

Planning ahead? View tomorrow's Chillicothe weather along with a complete 5 day forecast that includes precipitation probability, daily and nightly weather conditions, high and low temperature trends, sunrise and sunset information, sky cover, wind speed, wind direction, and wind chill for the Chillicothe area and around Peoria county, Illinois.
Updated: Thu Sep 3rd 2026 5:15 AM CDT
Chillicothe, IL Weather – 9-3 – Sunny
94° / 74°
Sunny
Chillicothe is set for a sunny day with temperatures peaking at 94°F and dipping to 74°F. There's a very small chance of rainfall, only about 7%. Wind will be moderate, blowing around 11mph on average and gusts of 31.3mph at 6 AM. The humidity will be on the higher side, averaging about 70%, the maximum being 83% at 7 AM and 56% being its lowest at 2 PM. Barometric pressure is its highest of 29.92inHg at 8 AM, a lowest point of 29.85inHg at 5 PM with an avg 29.89inHg.
Chillicothe, IL Weather – 9-4 – Sunny
91° / 75°

Weather Tomorrow

Sunny
Highs will reach 91°F with lows near 75°F in Chillicothe, where sunshine is. There's a moderate 36% chance of rainfall with an estimated 0.02in. Wind will be moderate, blowing around 11mph on average and gusts of 25.3mph at 3 AM. The humidity will be on the higher side, averaging about 64%, the maximum being 80% at 11 PM and 53% being its lowest at 1 AM. Barometric pressure is its highest of 29.96inHg at 11 AM, a lowest point of 29.86inHg at 1 AM with an avg 29.91inHg.
Chillicothe, IL Weather – 9-5 – Sunny
92° / 73°
Sunny
It will be sunny in Chillicothe, with a high of 92°F and a low of 73°F. Rainfall predicted to have a 57% chance with an estimated 0.06in. Wind will be moderate, blowing around 13mph on average and gusts of 20.2mph at 8 PM. The humidity will be on the higher side, averaging about 72%, the maximum being 91% at 8 PM and 50% being its lowest at 3 PM. Barometric pressure is its highest of 29.95inHg at 11 AM, a lowest point of 29.87inHg at 4 PM with an avg 29.92inHg.
Chillicothe, IL Weather – 9-6 – Sunny
88° / 67°
Sunny
Chillicothe could see a sunny day with daytime highs of 88°F and nighttime lows near 67°F. There might be light rainfall having a 17% chance with an estimated 0in. Winds will be light at 9mph and gusts of 21.3mph at 8 PM. The humidity will be on the higher side, averaging about 75%, the maximum being 89% at 7 AM and 55% being its lowest at 3 PM. Barometric pressure is its highest of 30.05inHg at 11 PM, a lowest point of 29.87inHg at 6 PM with an avg 29.94inHg.
Chillicothe, IL Weather – 9-7 – Sunny
89° / 62°
Sunny
In Chillicothe, bright and sunny conditions with highs near 89°F and lows around 62°F. There's a moderate 36% chance of rainfall with an estimated 0.02in. Wind will be moderate, blowing around 14mph on average and gusts of 30.6mph at 11 PM. The humidity will be on the higher side, averaging about 74%, the maximum being 94% at 4 AM and 52% being its lowest at 12 PM. Barometric pressure is its highest of 30.09inHg at 9 AM, a lowest point of 29.92inHg at 7 PM with an avg 29.99inHg.
Chillicothe, IL Weather – 9-8 – Overcast
99° / 79°
Overcast
Cloud-filled skies are in the forecast for Chillicothe, with a high of 99°F and a low of 79°F. There's a very small chance of rainfall, only about 7%. Wind will be moderate, blowing around 19mph on average and gusts of 39.8mph at 11 PM. Humidity levels should be comfortable, sitting around 54% on average, the maximum being 74% at 1 AM and 35% being its lowest at 11 PM. Barometric pressure is its highest of 29.95inHg at 1 AM, a lowest point of 29.82inHg at 7 PM with an avg 29.89inHg.

Currently

Clear 75°F
29.86 inHg.
Barometer
82%
Humidity
SSW 16.6 mph
Wind
Clear

5 Day Forecast Nearby

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