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    Boulder Weather

    You Know You're in Boulder When ...
    The bike paths are snow-plowed before the roads.
    Locals start commenting on the “humidity.” It’s a whopping 30%.
    The guy next to you says he broke down and wore long pants one day last year — when it hit -3°F.

    If moderate temperatures, an average of 300 sunny days per year and beautiful scenery sound like the perfect vacation destination, then you will love Boulder and its pleasant year-round weather. Boulder Colorado is considered the high-desert, with an altitude of 5,430 above sea level. This elevation ensures a mild climate with very little humidity in the summer and winter months. The warmest month is July with an average daytime temperature of 87 degrees Fahrenheit. You may need a sweater at night, as temperatures can dip quite low. January is the coldest month in Boulder, with an average daytime high of 45 degrees. Visitors to the Rocky Mountains dress in layers so they can be ready for all temperatures. 

    Boulder offers the perfect climate for a variety of outdoor recreation, including hiking and biking.  

    Boulder Creek Live Cam

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    Current Weather

    Weather Forecast | Weather Maps | Weather Radar | Hurricane Center

    Average Weather
    Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Average High 45 48 54 62 71 81 87 85 76 66 54 45
    Average Low 18 24 28 35 44 52 58 56 48 38 28 21
    Mean 34 36 41 48 58 67 74 71 62 54 41 34
    Average Precipitation      0.6 in 0.7 in 1.6 in 2.3 in 3.0 in 2.3 in 2.0 in 1.3 in 1.9 in 1.3 in 1.1 in 0.8 in