Boulder County, Colorado gets 18 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Boulder County averages 82 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 Boulder County. The US average is 205 sunny days.
Boulder County gets some kind of precipitation, on average, 94 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 85 degrees
Winter Low: the January low is 16
Rain: averages 18 inches of rain a year
Snow: averages 82 inches of snow a year
BESTPLACES COMFORT INDEX
The annual BestPlaces Comfort Index for Boulder County is 6.8 (10=best), which means it is less comfortable than most places in Colorado.
8.5 / 5.1
Summer / Winter
August, June and September are the most pleasant months in Boulder County, while December and January are the least comfortable months.