Climate in Glen Ellyn, Illinois

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Climate	Glen Ellyn, IL	United States
Rainfall (in.)	36.3	36.5
Snowfall (in.)	33	25
Precipitation Days	109	100
Sunny Days	191	205
Avg. July High	86	86.5
Avg. Jan. Low	14.1	20.5
Comfort Index (higher=better)	44	44
UV Index	3.4	4.3
Elevation ft.	751	1,443

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Glen Ellyn, IL, gets 36 inches of rain per year. The US average is 37. Snowfall is 33 inches. The average US city gets 25 inches of snow per year. The number of days with any measurable precipitation is 109.

On average, there are 191 sunny days per year in Glen Ellyn, IL. The July high is around 86 degrees. The January low is 14. Our comfort index, which is based on humidity during the hot months, is a 44 out of 100, where higher is more comfortable. The US average on the comfort index is 44.

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