Isabel, South Dakota gets 18 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Isabel averages 39 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 Isabel. The US average is 205 sunny days.
Isabel gets some kind of precipitation, on average, 76 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 87 degrees
Winter Low: the January low is 8
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 Isabel is 6.8 (10=best), which means it is about average compared to other places in South Dakota.
6.8 / 10
August, June and September are the most pleasant months in Isabel, while January and December are the least comfortable months.