2025 Compare Climate & Weather:
Idaho Falls, ID vs Seattle, WA

Highlights

On average, there are 152 sunny days per year in Seattle. Idaho Falls averages 201 sunny days per year. The US average is 205 sunny days.

Seattle, Washington gets 38 inches of rain, on average, per year. Idaho Falls, Idaho gets 12.2 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Seattle averages 4.6 inches of snow per year. Idaho Falls averages 38.9 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Seattle, Washington
Summer High: the July high is around 75.8 degrees
Winter Low: the January low is 37
Rain: averages 38 inches of rain a year
Snow: averages 4.6 inches of snow a year

Idaho Falls, Idaho
Summer High: the July high is around 86.2 degrees
Winter Low: the January low is 12.9
Rain: averages 12.2 inches of rain a year
Snow: averages 38.9 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Seattle is 7.5 (10=best), which means it is one of the most pleasant places in Washington.

The annual BestPlaces Comfort Index for Idaho Falls is 6.7 (10=best), which means it is more comfortable than most places in Idaho.

Today's Weather - Idaho Falls, ID

47°F

Today's Weather - Seattle, WA

45°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Idaho Falls / Seattle

July is the hottest month for Idaho Falls with an average high temperature of 86.2°, which ranks it as warmer than most places in Idaho. In Idaho Falls, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Idaho Falls are June, September and August.

August is the hottest month for Seattle with an average high temperature of 76.3°, which ranks it as cooler than most places in Washington. In Seattle, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Seattle are August, July and September.

January has the coldest nighttime temperatures for Idaho Falls with an average of 12.9°. This is colder than most places in Idaho.

December has the coldest nighttime temperatures for Seattle with an average of 35.9°. This is one of the warmest places in Washington.

In Idaho Falls, there are 20.2 days annually when the high temperature is over 90°, which is about average compared to other places in Idaho.

In Seattle, there are 1.7 days annually when the high temperature is over 90°, which is cooler than most places in Washington.

In Idaho Falls, there are 172.4 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Idaho.

In Seattle, there are 24.0 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Washington.

In Idaho Falls, there are 10.7 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Idaho.

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

May is the wettest month in Idaho Falls with 1.7 inches of rain, and the driest month is July with 0.6 inches. The wettest season is Summer with 34% of yearly precipitation and 20% occurs in Autumn, which is the driest season. The annual rainfall of 12.2 inches in Idaho Falls means that it is drier than most places in Idaho.


November is the wettest month in Seattle with 6.2 inches of rain, and the driest month is July with 0.8 inches. The wettest season is Spring with 39% of yearly precipitation and 9% occurs in Autumn, which is the driest season. The annual rainfall of 38.0 inches in Seattle means that it is about average compared to other places in Washington.

January is the rainiest month in Idaho Falls with 10.5 days of rain, and July is the driest month with only 4.6 rainy days. There are 93.3 rainy days annually in Idaho Falls, which is about average compared to other places in Idaho. The rainiest season is Spring when it rains 32% of the time and the driest is Autumn with only a 19% chance of a rainy day.

November is the rainiest month in Seattle with 18.7 days of rain, and August is the driest month with only 5.3 rainy days. There are 155.3 rainy days annually in Seattle, which is about average compared to other places in Washington. The rainiest season is Spring when it rains 33% of the time and the driest is Autumn with only a 13% chance of a rainy day.

An annual snowfall of 38.9 inches in Idaho Falls means that it is less snowy than most places in Idaho.

An annual snowfall of 4.6 inches in Seattle means that it is about average compared to other places in Washington.

December is the snowiest month in Idaho Falls with 10.9 inches of snow, and 7 months of the year have significant snowfall.

December is the snowiest month in Seattle with 2.1 inches of snow, and 4 months of the year have significant snowfall.