Affton, Missouri gets 44 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Affton averages 16 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 202 sunny days per year in Affton. The US average is 205 sunny days.
Affton gets some kind of precipitation, on average, 105 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Summer High: the July high is around 89 degrees
Winter Low: the January low is 23
Rain: averages 44 inches of rain a year
Snow: averages 16 inches of snow a year
BESTPLACES COMFORT INDEX
The annual BestPlaces Comfort Index for Affton is 7.2 (10=best), which means it is more comfortable than most places in Missouri.
7.2 / 10
September, May and October are the most pleasant months in Affton, while January and December are the least comfortable months.