Boulder, MT Weather


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The most pleasant months of the year for Boulder are August, July and June. 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 81.2°, which ranks it as cooler than most places in Montana. December is the snowiest month in Boulder with 9.2 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, MT

8 AM PST

Mostly Sunny then Slight Chance Light Snow

23°F

7 DAY FORECASTDESCRIPTIONHIGH/LOWWIND
TodayMostly Sunny then Slight Chance Light Snow37° / 18°E 3 to 10 mph
FridayPartly Sunny39° / 20°NNE 13 mph
SaturdaySunny51° / 33°ESE 2 to 10 mph
SundayChance Light Rain54° / 29°W 5 to 16 mph
MondayMostly Sunny54° / 31°WNW 9 to 14 mph
TuesdayMostly Sunny61° / 38°SSE 6 to 10 mph
WednesdayPartly Sunny then Chance Light Rain65° / 39°SSW 7 to 12 mph

Weather Highlights

Summer High: the July high is around 81 degrees
Winter Low: the January low is 12
Rain: averages 14 inches of rain a year
Snow: averages 55 inches of snow a year


BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for the Boulder area is 8.7 (10=best), which means it is more comfortable than most places in Montana.

8.7 / 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
January34° 12°
February37° 14°
March45° 21°
April54° 27°
May63° 35°
June71° 42°
July81° 48°
August81° 46°
September70° 37°
October56° 28°
November41° 19°
December32° 10°
Hot, Freezing, Rainy, Snowy Days: Boulder
Hot
Days
Freezing
Days
Rainy
Days
Snowy
Days
January03066
February02756
March02967
April02385
May010112
June11110
July4080
August3180
September0761
October02063
November02866
December03167

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.

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