2025 Compare Climate & Weather:
Salmon, ID vs Great Falls, MT

Highlights

On average, there are 188 sunny days per year in Great Falls. Salmon averages 172 sunny days per year. The US average is 205 sunny days.

Great Falls, Montana gets 14.4 inches of rain, on average, per year. Salmon, Idaho gets 11.4 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Great Falls averages 58 inches of snow per year. Salmon averages 42.1 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Great Falls, Montana
Summer High: the July high is around 85.3 degrees
Winter Low: the January low is 16.6
Rain: averages 14.4 inches of rain a year
Snow: averages 58 inches of snow a year

Salmon, Idaho
Summer High: the July high is around 84.4 degrees
Winter Low: the January low is 10.4
Rain: averages 11.4 inches of rain a year
Snow: averages 42.1 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Great Falls is 6.8 (10=best), which means it is more comfortable than most places in Montana.

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

Today's Weather - Salmon, ID

58°F

Today's Weather - Great Falls, MT

54°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Salmon / Great Falls

July is the hottest month for Salmon with an average high temperature of 84.4°, which ranks it as about average compared to other places in Idaho. In Salmon, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Salmon are June, August and September.

July is the hottest month for Great Falls with an average high temperature of 85.3°, which ranks it as warmer than most places in Montana. In Great Falls, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Great Falls are June, September and August.

January has the coldest nighttime temperatures for Salmon with an average of 10.4°. This is colder than most places in Idaho.

January has the coldest nighttime temperatures for Great Falls with an average of 16.6°. This is warmer than most places in Montana.

In Salmon, there are 13.8 days annually when the high temperature is over 90°, which is cooler than most places in Idaho.

In Great Falls, there are 20.9 days annually when the high temperature is over 90°, which is hotter than most places in Montana.

In Salmon, there are 193.1 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Idaho.

In Great Falls, there are 151.3 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Montana.

In Salmon, there are 15.2 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Idaho.

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

June is the wettest month in Salmon with 2.0 inches of rain, and the driest month is February with 0.6 inches. The wettest season is Autumn with 34% of yearly precipitation and 18% occurs in Spring, which is the driest season. The annual rainfall of 11.4 inches in Salmon means that it is drier than most places in Idaho.


June is the wettest month in Great Falls with 2.5 inches of rain, and the driest month is January with 0.5 inches. The wettest season is Autumn with 38% of yearly precipitation and 10% occurs in Spring, which is the driest season. The annual rainfall of 14.4 inches in Great Falls means that it is about average compared to other places in Montana.

May is the rainiest month in Salmon with 11.0 days of rain, and September is the driest month with only 5.5 rainy days. There are 96.5 rainy days annually in Salmon, which is about average compared to other places in Idaho. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 22% chance of a rainy day.

June is the rainiest month in Great Falls with 11.5 days of rain, and November is the driest month with only 5.6 rainy days. There are 89.8 rainy days annually in Great Falls, which is about average compared to other places in Montana. The rainiest season is Summer when it rains 30% of the time and the driest is Spring with only a 20% chance of a rainy day.

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

An annual snowfall of 58.0 inches in Great Falls means that it is snowier than most places in Montana.

December is the snowiest month in Salmon with 12.2 inches of snow, and 6 months of the year have significant snowfall.

March is the snowiest month in Great Falls with 10.4 inches of snow, and 9 months of the year have significant snowfall.