Jefferson County, Colorado gets 18 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Jefferson County averages 72 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 245 sunny days per year in Jefferson County. The US average is 205 sunny days.
Jefferson County gets some kind of precipitation, on average, 83 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 17
Rain: averages 18 inches of rain a year
Snow: averages 72 inches of snow a year
BESTPLACES COMFORT INDEX
The annual BestPlaces Comfort Index for Jefferson County is 7.1 (10=best), which means it is about average compared to other places in Colorado.
7.1 / 10
June, September and August are the most pleasant months in Jefferson County, while December and January are the least comfortable months.