Sweet Grass County, Montana gets 18 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Sweet Grass County averages 71 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 200 sunny days per year in Sweet Grass County. The US average is 205 sunny days.
Sweet Grass County gets some kind of precipitation, on average, 91 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 82 degrees
Winter Low: the January low is 15
Rain: averages 18 inches of rain a year
Snow: averages 71 inches of snow a year
BESTPLACES COMFORT INDEX
The annual BestPlaces Comfort Index for Sweet Grass County is 6.6 (10=best), which means it is about average compared to other places in Montana.
8.7 / 4.8
Summer / Winter
August, July and September are the most pleasant months in Sweet Grass County, while December and January are the least comfortable months.