Pennington County, South Dakota gets 18 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Pennington County averages 39 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 226 sunny days per year in Pennington County. The US average is 205 sunny days.
Pennington County gets some kind of precipitation, on average, 82 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 86 degrees
Winter Low: the January low is 13
Rain: averages 18 inches of rain a year
Snow: averages 39 inches of snow a year
BESTPLACES COMFORT INDEX
The annual BestPlaces Comfort Index for Pennington County is 7.0 (10=best), which means it is one of the most pleasant places in South Dakota.
7 / 10
June, September and August are the most pleasant months in Pennington County, while January and February are the least comfortable months.