Climate in Affton, Missouri

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Climate

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Climate	Affton, MO	United States
Rainfall (in.)	38.9	36.5
Snowfall (in.)	9.3	25
Precipitation Days	99	100
Sunny Days	202	205
Avg. July High	90	86.5
Avg. Jan. Low	22	20.5
Comfort Index (higher=better)	34	44
UV Index	4.3	4.3
Elevation ft.	584	1,060

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Affton, MO, gets 39 inches of rain per year. The US average is 37. Snowfall is 9 inches. The average US city gets 25 inches of snow per year. The number of days with any measurable precipitation is 99.

On average, there are 202 sunny days per year in Affton, MO. The July high is around 90 degrees. The January low is 22. Our comfort index, which is based on humidity during the hot months, is a 34 out of 100, where higher is more comfortable. The US average on the comfort index is 44.

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Affton Climate SperlingViews

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