2025 Compare Climate & Weather:
Darby, MT vs Blue River, CO

Highlights

On average, there are 250 sunny days per year in Blue River. Darby averages 157 sunny days per year. The US average is 205 sunny days.

Blue River, Colorado gets 17.7 inches of rain, on average, per year. Darby, Montana gets 16.2 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Blue River averages 149.1 inches of snow per year. Darby averages 48.8 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Blue River, Colorado
Summer High: the July high is around 71.4 degrees
Winter Low: the January low is 6.3
Rain: averages 17.7 inches of rain a year
Snow: averages 149.1 inches of snow a year

Darby, Montana
Summer High: the July high is around 82.9 degrees
Winter Low: the January low is 14.7
Rain: averages 16.2 inches of rain a year
Snow: averages 48.8 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Blue River is 5.4 (10=best), which means it is one of the least comfortable places in Colorado.

The annual BestPlaces Comfort Index for Darby is 6.5 (10=best), which means it is less comfortable than most places in Montana.

Today's Weather - Darby, MT

61°F

Today's Weather - Blue River, CO

29°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Darby / Blue River

July is the hottest month for Darby with an average high temperature of 82.9°, which ranks it as cooler than most places in Montana. In Darby, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Darby are August, July and June.

July is the hottest month for Blue River with an average high temperature of 71.4°, which ranks it as one of the coolest places in Colorado. In Blue River, there are 1 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Blue River are July, August and June.

December has the coldest nighttime temperatures for Darby with an average of 13.5°. This is about average compared to other places in Montana.

January has the coldest nighttime temperatures for Blue River with an average of 6.3°. This is colder than most places in Colorado.

In Darby, there are 9.6 days annually when the high temperature is over 90°, which is cooler than most places in Montana.

In Blue River, there are 0.0 days annually when the high temperature is over 90°, which is cooler than most places in Colorado.

In Darby, there are 193.9 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Montana.

In Blue River, there are 252.8 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Colorado.

In Darby, there are 13.3 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Montana.

In Blue River, there are 28.1 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Colorado.

June is the wettest month in Darby with 2.2 inches of rain, and the driest month is February with 0.9 inches. The wettest season is Autumn with 28% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 16.2 inches in Darby means that it is wetter than most places in Montana.


August is the wettest month in Blue River with 2.4 inches of rain, and the driest month is January with 1.0 inches. The wettest season is Autumn with 33% of yearly precipitation and 18% occurs in Spring, which is the driest season. The annual rainfall of 17.7 inches in Blue River means that it is wetter than most places in Colorado.

May is the rainiest month in Darby with 12.0 days of rain, and September is the driest month with only 6.6 rainy days. There are 108.5 rainy days annually in Darby, which is rainier than most places in Montana. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 23% chance of a rainy day.

August is the rainiest month in Blue River with 14.2 days of rain, and October is the driest month with only 7.3 rainy days. There are 118.5 rainy days annually in Blue River, which is one of the rainiest places in Colorado. The rainiest season is Autumn when it rains 29% of the time and the driest is Winter with only a 22% chance of a rainy day.

An annual snowfall of 48.8 inches in Darby means that it is snowier than most places in Montana.

An annual snowfall of 149.1 inches in Blue River means that it is one of the snowiest places in Colorado.

December is the snowiest month in Darby with 13.2 inches of snow, and 7 months of the year have significant snowfall.

April is the snowiest month in Blue River with 23.3 inches of snow, and 10 months of the year have significant snowfall.