Roundup, Montana gets 14 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Roundup averages 33 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 198 sunny days per year in Roundup. The US average is 205 sunny days.
Roundup gets some kind of precipitation, on average, 74 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 88 degrees
Winter Low: the January low is 13
Rain: averages 14 inches of rain a year
Snow: averages 33 inches of snow a year
BESTPLACES COMFORT INDEX
The annual BestPlaces Comfort Index for Roundup is 7.0 (10=best), which means it is one of the most pleasant places in Montana.
7 / 10
June, September and August are the most pleasant months in Roundup, while January and December are the least comfortable months.