2025 Compare Climate & Weather:
Great Falls, MT vs Graham, WA

Highlights

On average, there are 141 sunny days per year in Graham. Great Falls averages 188 sunny days per year. The US average is 205 sunny days.

Graham, Washington gets 52.1 inches of rain, on average, per year. Great Falls, Montana gets 14.4 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Graham averages 6.9 inches of snow per year. Great Falls averages 58 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Graham, Washington
Summer High: the July high is around 75.6 degrees
Winter Low: the January low is 35
Rain: averages 52.1 inches of rain a year
Snow: averages 6.9 inches of snow a year

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

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Graham is 7.1 (10=best), which means it is about average compared to other places in Washington.

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

Today's Weather - Great Falls, MT

44°F

Today's Weather - Graham, WA

47°F

Average Monthly High / Low (°F)

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

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.

August is the hottest month for Graham with an average high temperature of 76.4°, which ranks it as cooler than most places in Washington. In Graham, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Graham are August, July and September.

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

December has the coldest nighttime temperatures for Graham with an average of 33.6°. This is about average compared to other places in Washington.

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 Graham, there are 2.9 days annually when the high temperature is over 90°, which is about average compared to other places in Washington.

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 Graham, there are 44.8 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Washington.

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.

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

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.


November is the wettest month in Graham with 8.1 inches of rain, and the driest month is July with 1.3 inches. The wettest season is Spring with 35% of yearly precipitation and 11% occurs in Autumn, which is the driest season. The annual rainfall of 52.1 inches in Graham means that it is wetter than most places in Washington.

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.

November is the rainiest month in Graham with 20.0 days of rain, and August is the driest month with only 5.7 rainy days. There are 170.9 rainy days annually in Graham, which is rainier than most places in Washington. The rainiest season is Spring when it rains 31% of the time and the driest is Autumn with only a 14% chance of a rainy day.

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

An annual snowfall of 6.9 inches in Graham means that it is about average compared to other places in Washington.

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

December is the snowiest month in Graham with 1.9 inches of snow, and 5 months of the year have significant snowfall.