2025 Compare Cities Climate:
Collinsville, IL vs Decatur, IL

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Highlights
- Decatur has 7.9% less rainy days than Collinsville.
- Decatur has 0.0% more Sunny Days than Collinsville.
- On the BestPlaces comfort index, Decatur scores 0.0% worse than Collinsville
 Collinsville, ILDecatur, ILUnited States
 Rainfall  Unlock4038
 Snowfall13  Unlock28
 Precipitation  Unlock104106
 Sunny199  Unlock205
 Avg. July High  Unlock8786
 Avg. Jan. Low22  Unlock22
 Comfort Index (higher=better)  Unlock7.27
 UV Index4.1  Unlock4.3
 Elevation  Unlock6762443
Reviews for Collinsville    2 Reviews

St. Louis MO metro area - Illinois area. Blistering summer weather, way below freezing winters. Almost no spring or fall. Otherwise, not a bad  More

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Over 19 years ago

Collinsville's winters rarely get a heavy snowfall. A few inches is the norm. The summers are hot and very muggy. Fall and Spring are the best times to be in  More

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Reviews for Decatur    14 Reviews

I was sent here by the company I worked for in the '90's and was not initially impressed with midwest living. However, over the years I got used to living in the "Pride  More

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I grew up in Decatur and I still have family there, but it depresses me to see what it has become. It has a high unemployment rate, many business have closed or are run  More

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Over 14 years ago

If you enjoy drinking & driving, Decatur's fifteen drive-thru liquor windows, three times the # of drive-thru's than the ten largest cities in Illinois, COMBINED, will  More

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