2025 Compare Climate & Weather:
Princeton, NJ vs Pennington, NJ

Highlights

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

Pennington, New Jersey gets 48 inches of rain, on average, per year. Princeton, New Jersey gets 47.4 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Pennington averages 20.8 inches of snow per year. Princeton averages 24 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Pennington, New Jersey
Summer High: the July high is around 86.1 degrees
Winter Low: the January low is 20.7
Rain: averages 48 inches of rain a year
Snow: averages 20.8 inches of snow a year

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

BestPlaces Comfort Index

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

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.

Today's Weather - Princeton, NJ

61°F

Today's Weather - Pennington, NJ

61°F

Average Monthly High / Low (°F)

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

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.

July is the hottest month for Pennington with an average high temperature of 86.1°, which ranks it as warmer than most places in New Jersey. In Pennington, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Pennington are September, June and May.

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

January has the coldest nighttime temperatures for Pennington with an average of 20.7°. This is colder than most places in New Jersey.

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 Pennington, there are 18.2 days annually when the high temperature is over 90°, which is hotter than most places in New Jersey.

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 Pennington, there are 118.6 days annually when the nighttime low temperature falls below freezing, which is colder than most places in New Jersey.

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.

In Pennington, there are 0.7 days annually when the nighttime low temperature falls below zero°, which is colder than most places in New Jersey.

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.


July is the wettest month in Pennington with 5.2 inches of rain, and the driest month is February with 2.6 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 48.0 inches in Pennington means that it is about average compared to other places in New Jersey.

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.

May is the rainiest month in Pennington with 12.1 days of rain, and September is the driest month with only 8.7 rainy days. There are 124.0 rainy days annually in Pennington, 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 24.0 inches in Princeton means that it is about average compared to other places in New Jersey.

An annual snowfall of 20.8 inches in Pennington means that it is less snowy than most places in New Jersey.

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

February is the snowiest month in Pennington with 7.0 inches of snow, and 5 months of the year have significant snowfall.