Alton, Missouri gets 46 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Alton averages 6 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 213 sunny days per year in Alton. The US average is 205 sunny days.
Alton gets some kind of precipitation, on average, 92 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 90 degrees
Winter Low: the January low is 22
Rain: averages 46 inches of rain a year
Snow: averages 6 inches of snow a year
BESTPLACES COMFORT INDEX
The annual BestPlaces Comfort Index for Alton is 7.3 (10=best), which means it is one of the most pleasant places in Missouri.
7.3 / 10
September, May and October are the most pleasant months in Alton, while January and December are the least comfortable months.