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Chapin, IL Weather Tomorrow

Looking for tomorrow's weather in Chapin? Explore a complete 5 day forecast featuring precipitation potential, daytime and nighttime forecasts, temperature highs and lows in Fahrenheit and Celsius, sunrise and sunset times, cloud cover, wind chill, wind speed, and wind direction for the Chapin area and around Morgan county, Illinois.
Updated: Sat Aug 29th 2026 1:15 PM CDT
Chapin, IL Weather – 8-29 – Overcast
88° / 60°
Overcast
Chapin could see cloud-filled skies with daytime highs of 88°F and nighttime lows near 60°F. There's a very small chance of rainfall, only about 10% with an estimated 0in. Wind will be moderate, blowing around 15mph on average and gusts of 31.6mph at 11 PM. The humidity will be on the higher side, averaging about 63%, the maximum being 61% at 9 PM and 32% being its lowest at 4 PM. Barometric pressure is its highest of 30.03inHg at 2 PM, a lowest point of 29.95inHg at 6 PM with an avg 29.98inHg.
Chapin, IL Weather – 8-30 – Overcast
99° / 68°

Weather Tomorrow

Overcast
In Chapin, it will be overcast with highs near 99°F and lows around 68°F. There might be light rainfall having a 17% chance with an estimated 0.01in. Wind will be moderate, blowing around 19mph on average and gusts of 34.7mph at 11 PM. Humidity levels should be comfortable, sitting around 40% on average, the maximum being 73% at 6 AM and 19% being its lowest at 4 PM. Barometric pressure is its highest of 29.98inHg at 8 AM, a lowest point of 29.85inHg at 6 PM with an avg 29.92inHg.
Chapin, IL Weather – 8-31 – Overcast
103° / 78°
Overcast
Daytime highs will reach 103°F with lows dropping to 78°F in Chapin, where skies will be overcast. There's a very small chance of rainfall, only about 6%. Wind will be moderate, blowing around 18mph on average and gusts of 37.4mph at 6 AM. Humidity levels should be comfortable, sitting around 34% on average, the maximum being 49% at 7 AM and 21% being its lowest at 3 PM. Barometric pressure is its highest of 29.91inHg at 8 AM, a lowest point of 29.8inHg at 6 PM with an avg 29.86inHg.
Chapin, IL Weather – 9-1 – Sunny
107° / 81°
Sunny
Chapin may see sunshine, with daytime highs of 107°F and overnight lows near 81°F. There's a very small chance of rainfall, only about 3%. Wind will be moderate, blowing around 17mph on average and gusts of 37.9mph at 12 AM. Humidity levels should be comfortable, sitting around 35% on average, the maximum being 53% at 7 AM and 17% being its lowest at 5 PM. Barometric pressure is its highest of 29.91inHg at 10 AM, a lowest point of 29.8inHg at 6 PM with an avg 29.87inHg.
Chapin, IL Weather – 9-2 – Sunny
106° / 81°
Sunny
Highs will reach 106°F with lows near 81°F in Chapin, where sunshine is. There's a very small chance of rainfall, only about 2%. Wind will be moderate, blowing around 18mph on average and gusts of 39.2mph at 3 AM. Humidity levels should be comfortable, sitting around 35% on average, the maximum being 58% at 7 AM and 19% being its lowest at 1 PM. Barometric pressure is its highest of 29.91inHg at 11 AM, a lowest point of 29.8inHg at 6 PM with an avg 29.86inHg.
Chapin, IL Weather – 9-3 – Sunny
106° / 82°
Sunny
In Chapin, bright and sunny conditions with highs near 106°F and lows around 82°F. There's a very small chance of rainfall, only about 5% with an estimated 0in. Winds will be light at 9mph and gusts of 14.3mph at 10 PM. Humidity levels should be comfortable, sitting around 40% on average, the maximum being 52% at 4 AM and 18% being its lowest at 4 PM. Barometric pressure is its highest of 29.95inHg at 9 AM, a lowest point of 29.83inHg at 4 PM with an avg 29.9inHg.

Currently

Overcast 86°F
30.04 inHg.
Barometer
41%
Humidity
S 20.2 mph
Wind
Overcast

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