Boulder, CO has a pleasant climate year round with mild temperatures and low humidity. Summers in Boulder tend to be sunny and hot, with highs typically in the upper 80s and lows in the mid-50s. Winters are generally cold but not too harsh, with temperatures ranging from high 20s to low 40s during the day and dipping into single digits at night. The area also receives an average of 11 inches of snow each year, giving locals plenty of chances to enjoy winter activities like skiing and snowshoeing.
Boulder (zip 80305), Colorado gets 18 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Boulder (zip 80305) averages 71 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 (zip 80305). The US average is 205 sunny days.
Boulder (zip 80305) gets some kind of precipitation, on average, 89 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 89 degrees
Winter Low: the January low is 19
Rain: averages 18 inches of rain a year
Snow: averages 71 inches of snow a year