2025 Compare Climate & Weather:
Sammamish, WA vs Grants Pass, OR

Highlights

On average, there are 196 sunny days per year in Grants Pass. Sammamish averages 155 sunny days per year. The US average is 205 sunny days.

Grants Pass, Oregon gets 29.8 inches of rain, on average, per year. Sammamish, Washington gets 52.7 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Grants Pass averages 2.6 inches of snow per year. Sammamish averages 6.3 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Grants Pass, Oregon
Summer High: the July high is around 90.7 degrees
Winter Low: the January low is 33.9
Rain: averages 29.8 inches of rain a year
Snow: averages 2.6 inches of snow a year

Sammamish, Washington
Summer High: the July high is around 75.4 degrees
Winter Low: the January low is 35.3
Rain: averages 52.7 inches of rain a year
Snow: averages 6.3 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Grants Pass is 7.5 (10=best), which means it is more comfortable than most places in Oregon.

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

Today's Weather - Sammamish, WA

50°F

Today's Weather - Grants Pass, OR

48°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Sammamish / Grants Pass

August is the hottest month for Sammamish with an average high temperature of 76.0°, which ranks it as cooler than most places in Washington. In Sammamish, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Sammamish are August, July and September.

August is the hottest month for Grants Pass with an average high temperature of 90.9°, which ranks it as one of the hottest places in Oregon. In Grants Pass, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Grants Pass are June, May and September.

December has the coldest nighttime temperatures for Sammamish with an average of 33.9°. This is warmer than most places in Washington.

January has the coldest nighttime temperatures for Grants Pass with an average of 33.9°. This is warmer than most places in Oregon.

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

In Grants Pass, there are 54.7 days annually when the high temperature is over 90°, which is one of the hottest places in Oregon.

In Sammamish, there are 42.9 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Washington.

In Grants Pass, there are 53.1 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Oregon.

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

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

November is the wettest month in Sammamish with 8.6 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 52.7 inches in Sammamish means that it is wetter than most places in Washington.


December is the wettest month in Grants Pass with 6.0 inches of rain, and the driest month is July with 0.3 inches. The wettest season is Spring with 49% of yearly precipitation and 4% occurs in Autumn, which is the driest season. The annual rainfall of 29.8 inches in Grants Pass means that it is drier than most places in Oregon.

November is the rainiest month in Sammamish with 20.4 days of rain, and August is the driest month with only 5.7 rainy days. There are 173.5 rainy days annually in Sammamish, 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.

December is the rainiest month in Grants Pass with 15.0 days of rain, and July is the driest month with only 1.7 rainy days. There are 104.4 rainy days annually in Grants Pass, which is less rainy than most places in Oregon. The rainiest season is Spring when it rains 40% of the time and the driest is Autumn with only a 7% chance of a rainy day.

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

An annual snowfall of 2.6 inches in Grants Pass means that it is less snowy than most places in Oregon.

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

January is the snowiest month in Grants Pass with 0.9 inches of snow, and 3 months of the year have significant snowfall.