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2026 Compare Cities Climate:
Collinsville, IL vs Harrisburg, IL

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Highlights
- Harrisburg has 13.1% more rainy days than Collinsville.
- Harrisburg has 1.0% less Sunny Days than Collinsville.
- On the BestPlaces comfort index, Harrisburg scores 1.4% better than Collinsville
 Collinsville, ILHarrisburg, ILUnited States
 Rainfall  Unlock4938
 Snowfall13  Unlock28
 Precipitation  Unlock102106
 Sunny199  Unlock205
 Avg. July High  Unlock8886
 Avg. Jan. Low22  Unlock22
 Comfort Index (higher=better)  Unlock7.37
 UV Index4.1  Unlock4.3
 Elevation  Unlock3942443
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Reviews for Collinsville    2 Reviews
Mitt · Collinsville, IL
Unbearable Summers, Freezing Winters
Over 19 years ago

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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brian · Charleston, IL
Collinsville, IL Climate
Over 20 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 Harrisburg    1 Reviews
Allecia · Harrisburg, IL
Cost of Living
Over 15 years ago

The cost of living is very reasonable for the  More

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Learn More About Collinsville, Illinois
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