The climate in the Boulder area of Colorado is relatively mild throughout the year. In the summer months, temperatures can reach up to 86°F (30°C) with low humidity levels, while in the winter months temperatures typically stay between 10 and 40°F (-12 and 4°C). Rainfall amounts range from 10 to 15 inches annually. Snowfall averages at about 60 inches per season, with much higher elevations in the surrounding mountains receiving up to 200 inches of annual snowfall. The area experiences around 300 sunny days a year which make it a great place to visit for outdoor recreation all year long.
Boulder (zip 80304), Colorado gets 18 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Boulder (zip 80304) 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 80304). The US average is 205 sunny days.
Boulder (zip 80304) 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