2026 Compare Cities :
Collinsville, IL vs Arnold, MO

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 Collinsville, ILArnold, MOUnited States
 Rainfall  Unlock43.938.1
 Snowfall12.9  Unlock27.8
 Precipitation Days101.596.8106.2
 Sunny199  Unlock205
 Avg. July High  Unlock88.385.8
 Avg. Jan. Low22  Unlock21.7
 Comfort Index (higher=better)  Unlock7.37
 UV Index4.1  Unlock4.3
 Elevation ft.5616002443
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 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 Arnold    1 Reviews

Over 17 years ago

My husband's family lives in the area (Crestwood, Barnhart, Fenton, Ballwin), we have been visiting for about 20 years. We moved from a southern state which had it  More

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