2025 Compare Climate & Weather:
Juneau, AK vs Helena, MT

Highlights

On average, there are 189 sunny days per year in Helena. Juneau averages 86 sunny days per year. The US average is 205 sunny days.

Helena, Montana gets 12.6 inches of rain, on average, per year. Juneau, Alaska gets 70.6 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Helena averages 42.1 inches of snow per year. Juneau averages 79.8 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Helena, Montana
Summer High: the July high is around 83.4 degrees
Winter Low: the January low is 13.8
Rain: averages 12.6 inches of rain a year
Snow: averages 42.1 inches of snow a year

Juneau, Alaska
Summer High: the July high is around 64.1 degrees
Winter Low: the January low is 24.8
Rain: averages 70.6 inches of rain a year
Snow: averages 79.8 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Helena is 6.6 (10=best), which means it is about average compared to other places in Montana.

The annual BestPlaces Comfort Index for Juneau is 5.4 (10=best), which means it is more comfortable than most places in Alaska.

Today's Weather - Juneau, AK

37°F

Today's Weather - Helena, MT

74°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Juneau / Helena

July is the hottest month for Juneau with an average high temperature of 64.1°, which ranks it as about average compared to other places in Alaska. In Juneau, there are 0 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Juneau are July, August and June.

July is the hottest month for Helena with an average high temperature of 83.4°, which ranks it as cooler than most places in Montana. In Helena, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Helena are June, August and July.

January has the coldest nighttime temperatures for Juneau with an average of 24.8°. This is warmer than most places in Alaska.

December has the coldest nighttime temperatures for Helena with an average of 13.6°. This is about average compared to other places in Montana.

In Juneau, there are 0.0 days annually when the high temperature is over 90°, which is about average compared to other places in Alaska.

In Helena, there are 15.5 days annually when the high temperature is over 90°, which is cooler than most places in Montana.

In Juneau, there are 111.9 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Alaska.

In Helena, there are 170.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Montana.

In Juneau, there are 1.3 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Alaska.

In Helena, there are 16.6 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Montana.

September is the wettest month in Juneau with 10.2 inches of rain, and the driest month is April with 3.5 inches. The wettest season is Winter with 38% of yearly precipitation and 16% occurs in Summer, which is the driest season. The annual rainfall of 70.6 inches in Juneau means that it is wetter than most places in Alaska.


June is the wettest month in Helena with 2.1 inches of rain, and the driest month is January with 0.4 inches. The wettest season is Autumn with 37% of yearly precipitation and 10% occurs in Spring, which is the driest season. The annual rainfall of 12.6 inches in Helena means that it is drier than most places in Montana.

October is the rainiest month in Juneau with 24.6 days of rain, and June is the driest month with only 16.8 rainy days. There are 235.7 rainy days annually in Juneau, which is one of the rainiest places in Alaska. The rainiest season is Winter when it rains 29% of the time and the driest is Summer with only a 23% chance of a rainy day.

May is the rainiest month in Helena with 11.0 days of rain, and February is the driest month with only 5.5 rainy days. There are 89.6 rainy days annually in Helena, which is about average compared to other places in Montana. The rainiest season is Summer when it rains 29% of the time and the driest is Spring with only a 21% chance of a rainy day.

An annual snowfall of 79.8 inches in Juneau means that it is snowier than most places in Alaska.

An annual snowfall of 42.1 inches in Helena means that it is about average compared to other places in Montana.

January is the snowiest month in Juneau with 26.4 inches of snow, and 7 months of the year have significant snowfall.

March is the snowiest month in Helena with 7.4 inches of snow, and 9 months of the year have significant snowfall.