2025 Compare Cities :
Castle Rock, CO vs Collinsville, IL

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 Castle Rock, COCollinsville, ILUnited States
 Rainfall  Unlock42.938.1
 Snowfall78.3  Unlock27.8
 Precipitation Days70101.5106.2
 Sunny243  Unlock205
 Avg. July High  Unlock89.185.8
 Avg. Jan. Low18.6  Unlock21.7
 Comfort Index (higher=better)  Unlock7.27
 UV Index4.8  Unlock4.3
 Elevation ft.62245612443
Reviews for Castle Rock    12 Reviews

My fiance and I moved here in 2018 shortly after finishing college. I work in Colorado Springs and she works in the Denver area, so Castle Rock was practically our only  More

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Over 7 years ago

I have always been mobile for my career, until I moved to Castle Rock. I've lived in in multiple cities in the Midwest including Chicago and have visited nearly every  More

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Over 11 years ago

we have four seasons, and the rockies are only two hrs.away. so for the outdoors enthusist sking or hiking is like no other place you have been or seen it is hard to  More

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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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