2025 Compare Climate & Weather:
Seattle, WA vs Princeton, NJ

Highlights

On average, there are 204 sunny days per year in Princeton. Seattle averages 152 sunny days per year. The US average is 205 sunny days.

Princeton, New Jersey gets 47.4 inches of rain, on average, per year. Seattle, Washington gets 38 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Princeton averages 24 inches of snow per year. Seattle averages 4.6 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Princeton, New Jersey
Summer High: the July high is around 85.6 degrees
Winter Low: the January low is 22
Rain: averages 47.4 inches of rain a year
Snow: averages 24 inches of snow a year

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

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Princeton is 7.2 (10=best), which means it is about average compared to other places in New Jersey.

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

Today's Weather - Seattle, WA

54°F

Today's Weather - Princeton, NJ

75°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Seattle / Princeton

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.

July is the hottest month for Princeton with an average high temperature of 85.6°, which ranks it as warmer than most places in New Jersey. In Princeton, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Princeton are September, June and August.

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

January has the coldest nighttime temperatures for Princeton with an average of 22.0°. This is colder than most places in New Jersey.

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

In Princeton, there are 16.8 days annually when the high temperature is over 90°, which is about average compared to other places in New Jersey.

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 Princeton, there are 109.7 days annually when the nighttime low temperature falls below freezing, which is colder than most places in New Jersey.

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.

In Princeton, there are 0.3 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in New Jersey.

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.


July is the wettest month in Princeton with 5.1 inches of rain, and the driest month is February with 2.5 inches. The wettest season is Autumn with 29% of yearly precipitation and 20% occurs in Spring, which is the driest season. The annual rainfall of 47.4 inches in Princeton means that it is about average compared to other places in New Jersey.

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.

May is the rainiest month in Princeton with 12.4 days of rain, and September is the driest month with only 8.7 rainy days. There are 124.6 rainy days annually in Princeton, which is one of the rainiest places in New Jersey. 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.

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

An annual snowfall of 24.0 inches in Princeton means that it is about average compared to other places in New Jersey.

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

February is the snowiest month in Princeton with 8.3 inches of snow, and 5 months of the year have significant snowfall.