Boulder, CO Weather


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The most pleasant months of the year for Boulder are September, June and May. In Boulder, there are 3 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for Boulder with an average high temperature of 88.1°, which ranks it as about average compared to other places in Colorado. March is the snowiest month in Boulder with 14.3 inches of snow, and 9 months of the year have significant snowfall. Days with noticeable humidity are rare throughout the year.

Today's Weather - Boulder, CO

5 AM PST

Chance Showers And Thunderstorms

61°F

7 DAY FORECASTDESCRIPTIONHIGH/LOWWIND
TodayChance Showers And Thunderstorms85° / 59°NNE 2 to 6 mph
SundayShowers And Thunderstorms75° / 54°NNE 2 to 7 mph
MondayMostly Sunny then Chance Showers And Thunderstorms81° / 57°NE 1 to 6 mph
TuesdaySunny then Slight Chance Showers And Thunderstorms85° / 59°ENE 1 to 6 mph
WednesdaySunny then Slight Chance Showers And Thunderstorms90° / 61°NE 2 to 6 mph
ThursdaySunny then Slight Chance Showers And Thunderstorms94° / 63°NNE 2 to 6 mph
FridayMostly Sunny then Chance Showers And Thunderstorms93° / 64°N 6 mph

Weather Highlights

Summer High: the July high is around 88 degrees
Winter Low: the January low is 19
Rain: averages 18 inches of rain a year
Snow: averages 71 inches of snow a year


BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for the Boulder area is 8.6 (10=best), which means it is more comfortable than most places in Colorado.

8.6 / 10

A higher score indicates a more comfortable year-round climate. The US average for the comfort index is 7.8. Our index is based on the total number of days annually within the comfort range of 70-80 degrees, and we also applied a penalty for days of excessive humidity.


Average Monthly High and Low (°F)
HighLow
January47° 19°
February48° 20°
March55° 27°
April62° 34°
May72° 43°
June82° 51°
July88° 57°
August86° 55°
September78° 46°
October66° 36°
November54° 26°
December45° 18°
Hot, Freezing, Rainy, Snowy Days: Boulder
Hot
Days
Freezing
Days
Rainy
Days
Snowy
Days
January02855
February02555
March02376
April01394
May12111
June6090
July14090
August90100
September3170
October01062
November02254
December02855

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

Reviews for Boulder
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Outside of the university, Boulder had a very distinctive "wealthy hippy" feel. A lot of alternative medicine and a matching ethos. This is changing some among my  More

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We moved here from Texas about 4 years ago and love it here! The amazing sense of community and high regard for the environment are two of the main reasons we love  More

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Over 4 years ago

Most people do much worse than Boulder. I'm the most critical person I've ever met who is never happy or satisfied -- so that's a pretty huge compliment.   More

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