The climate in Boulder, CO County is generally mild and sunny. Summers are warm with an average high of 85°F and an average low of 57°F. Winters are cold but not as severe as other areas of Colorado, with an average high of 46°F and an average low of 20°F. There is a dry, continental climate here with very little humidity throughout the year. Precipitation is relatively light at around 19 inches annually, and there are about 250 days of sunshine each year. All in all, Boulder enjoys pleasant weather conditions year-round that can be enjoyed by locals and visitors alike!
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.
Weather Highlights
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