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 PM PST
Slight Chance Showers And Thunderstorms
|7 DAY FORECAST||DESCRIPTION||HIGH/LOW||WIND|
|This Afternoon||Slight Chance Showers And Thunderstorms||81° / 55°||S 8 mph|
|Wednesday||Mostly Sunny then Slight Chance Showers And Thunderstorms||89° / 58°||SW 3 to 7 mph|
|Thursday||Mostly Sunny then Slight Chance Showers And Thunderstorms||92° / 59°||SSW 3 to 7 mph|
|Friday||Sunny||94° / 62°||S 6 mph|
|Saturday||Mostly Sunny then Chance Showers And Thunderstorms||92° / 60°||S 7 mph|
|Sunday||Mostly Sunny then Chance Showers And Thunderstorms||88° / 58°||NNW 6 mph|
|Monday||Slight Chance Rain Showers then Chance Showers And Thunderstorms||84° / 57°||N 6 mph|
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
SPERLING'S COMFORT INDEX
Boulder ranks 73/100 for Comfort Index
A higher score indicates a more comfortable year-round climate. The US average for the comfort index is 54. 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)
Hot, Freezing, Rainy, Snowy Days: Boulder
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.