2025 Compare Climate & Weather:
Sisters, OR vs Snoqualmie, WA

Highlights

On average, there are 151 sunny days per year in Snoqualmie. Sisters averages 162 sunny days per year. The US average is 205 sunny days.

Snoqualmie, Washington gets 54 inches of rain, on average, per year. Sisters, Oregon gets 11.4 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Snoqualmie averages 6.3 inches of snow per year. Sisters averages 16.1 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Snoqualmie, Washington
Summer High: the July high is around 75.5 degrees
Winter Low: the January low is 35.2
Rain: averages 54 inches of rain a year
Snow: averages 6.3 inches of snow a year

Sisters, Oregon
Summer High: the July high is around 84.2 degrees
Winter Low: the January low is 23.2
Rain: averages 11.4 inches of rain a year
Snow: averages 16.1 inches of snow a year

BestPlaces Comfort Index

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

The annual BestPlaces Comfort Index for Sisters is 7.0 (10=best), which means it is less comfortable than most places in Oregon.

Today's Weather - Sisters, OR

58°F

Today's Weather - Snoqualmie, WA

69°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Sisters / Snoqualmie

July is the hottest month for Sisters with an average high temperature of 84.2°, which ranks it as warmer than most places in Oregon. In Sisters, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Sisters are September, June and August.

August is the hottest month for Snoqualmie with an average high temperature of 76.1°, which ranks it as cooler than most places in Washington. In Snoqualmie, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Snoqualmie are August, July and September.

December has the coldest nighttime temperatures for Sisters with an average of 21.4°. This is colder than most places in Oregon.

December has the coldest nighttime temperatures for Snoqualmie with an average of 33.8°. This is warmer than most places in Washington.

In Sisters, there are 19.7 days annually when the high temperature is over 90°, which is hotter than most places in Oregon.

In Snoqualmie, there are 3.1 days annually when the high temperature is over 90°, which is about average compared to other places in Washington.

In Sisters, there are 178.7 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Oregon.

In Snoqualmie, there are 44.4 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Washington.

In Sisters, there are 2.8 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Oregon.

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

January is the wettest month in Sisters with 1.6 inches of rain, and the driest month is August with 0.4 inches. The wettest season is Spring with 37% of yearly precipitation and 15% occurs in Autumn, which is the driest season. The annual rainfall of 11.4 inches in Sisters means that it is one of the driest places in Oregon.


November is the wettest month in Snoqualmie with 8.8 inches of rain, and the driest month is July with 1.2 inches. The wettest season is Spring with 36% of yearly precipitation and 10% occurs in Autumn, which is the driest season. The annual rainfall of 54.0 inches in Snoqualmie means that it is wetter than most places in Washington.

December is the rainiest month in Sisters with 9.1 days of rain, and August is the driest month with only 2.7 rainy days. There are 72.8 rainy days annually in Sisters, which is one of the least rainy places in Oregon. The rainiest season is Spring when it rains 34% of the time and the driest is Autumn with only a 15% chance of a rainy day.

November is the rainiest month in Snoqualmie with 20.6 days of rain, and August is the driest month with only 5.8 rainy days. There are 175.4 rainy days annually in Snoqualmie, 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 16.1 inches in Sisters means that it is snowier than most places in Oregon.

An annual snowfall of 6.3 inches in Snoqualmie means that it is about average compared to other places in Washington.

December is the snowiest month in Sisters with 4.8 inches of snow, and 5 months of the year have significant snowfall.

December is the snowiest month in Snoqualmie with 2.0 inches of snow, and 5 months of the year have significant snowfall.