2025 Compare Climate & Weather:
Helena, MT vs Roseburg, OR

Highlights

On average, there are 182 sunny days per year in Roseburg. Helena averages 189 sunny days per year. The US average is 205 sunny days.

Roseburg, Oregon gets 35.4 inches of rain, on average, per year. Helena, Montana gets 12.6 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Roseburg averages 0.6 inches of snow per year. Helena averages 42.1 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Roseburg, Oregon
Summer High: the July high is around 84.7 degrees
Winter Low: the January low is 36
Rain: averages 35.4 inches of rain a year
Snow: averages 0.6 inches of snow a year

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

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Roseburg is 7.6 (10=best), which means it is one of the most pleasant places in Oregon.

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

Today's Weather - Helena, MT

52°F

Today's Weather - Roseburg, OR

49°F

Average Monthly High / Low (°F)

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

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.

August is the hottest month for Roseburg with an average high temperature of 85.1°, which ranks it as warmer than most places in Oregon. In Roseburg, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Roseburg are September, June and July.

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

January has the coldest nighttime temperatures for Roseburg with an average of 36.0°. This is warmer than most places in Oregon.

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

In Roseburg, there are 23.8 days annually when the high temperature is over 90°, which is hotter than most places in Oregon.

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 Roseburg, there are 26.6 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Oregon.

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.

In Roseburg, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Oregon.

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.


December is the wettest month in Roseburg with 6.5 inches of rain, and the driest month is July with 0.4 inches. The wettest season is Spring with 44% of yearly precipitation and 5% occurs in Autumn, which is the driest season. The annual rainfall of 35.4 inches in Roseburg means that it is about average compared to other places in Oregon.

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.

December is the rainiest month in Roseburg with 19.8 days of rain, and July is the driest month with only 2.2 rainy days. There are 145.5 rainy days annually in Roseburg, which is about average compared to other places in Oregon. The rainiest season is Spring when it rains 38% of the time and the driest is Autumn with only a 8% chance of a rainy day.

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

An annual snowfall of 0.6 inches in Roseburg means that it is one of the least snowy places in Oregon.

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

December is the snowiest month in Roseburg with 0.3 inches of snow, and no months of the year have significant snowfall.