2025 Compare Climate & Weather:
Palmyra, PA vs Princeton, NJ

Highlights

On average, there are 204 sunny days per year in Princeton. Palmyra averages 197 sunny days per year. The US average is 205 sunny days.

Princeton, New Jersey gets 47.4 inches of rain, on average, per year. Palmyra, Pennsylvania gets 42.6 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. Palmyra averages 25 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

Palmyra, Pennsylvania
Summer High: the July high is around 84.6 degrees
Winter Low: the January low is 21.4
Rain: averages 42.6 inches of rain a year
Snow: averages 25 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 Palmyra borough is 7.1 (10=best), which means it is more comfortable than most places in Pennsylvania.

Today's Weather - Palmyra, PA

66°F

Today's Weather - Princeton, NJ

72°F

Average Monthly High / Low (°F)

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

July is the hottest month for Palmyra borough with an average high temperature of 84.6°, which ranks it as warmer than most places in Pennsylvania. In Palmyra borough, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Palmyra borough are June, September and August.

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.

January has the coldest nighttime temperatures for Palmyra borough with an average of 21.4°. This is warmer than most places in Pennsylvania.

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

In Palmyra borough, there are 12.1 days annually when the high temperature is over 90°, which is hotter than most places in Pennsylvania.

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 Palmyra borough, there are 111.7 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Pennsylvania.

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 Palmyra borough, there are 0.8 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Pennsylvania.

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.

July is the wettest month in Palmyra borough with 4.5 inches of rain, and the driest month is February with 2.7 inches. The wettest season is Autumn with 28% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 42.6 inches in Palmyra borough means that it is about average compared to other places in Pennsylvania.


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.

May is the rainiest month in Palmyra borough with 12.2 days of rain, and October is the driest month with only 8.9 rainy days. There are 120.6 rainy days annually in Palmyra borough, which is less rainy than most places in Pennsylvania. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 23% 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 25.0 inches in Palmyra borough means that it is less snowy than most places in Pennsylvania.

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

February is the snowiest month in Palmyra borough with 8.8 inches of snow, and 5 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.