2025 Compare Climate & Weather:
Princeton, NJ vs Tempe, AZ

Highlights

On average, there are 300 sunny days per year in Tempe. Princeton averages 204 sunny days per year. The US average is 205 sunny days.

Tempe, Arizona gets 9 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.

Tempe averages 0 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

Tempe, Arizona
Summer High: the July high is around 104.1 degrees
Winter Low: the January low is 41.5
Rain: averages 9 inches of rain a year
Snow: averages 0 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 Tempe is 7.4 (10=best), which means it is less comfortable than most places in Arizona.

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

59°F

Today's Weather - Tempe, AZ

80°F

Average Monthly High / Low (°F)

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

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 Tempe with an average high temperature of 104.1°, which ranks it as warmer than most places in Arizona. In Tempe, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Tempe are March, November and February.

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

December has the coldest nighttime temperatures for Tempe with an average of 40.5°. This is warmer than most places in Arizona.

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 Tempe, there are 164.9 days annually when the high temperature is over 90°, which is hotter than most places in Arizona.

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 Tempe, there are 7.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Arizona.

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

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.


August is the wettest month in Tempe with 1.2 inches of rain, and the driest month is June with 0.0 inches. The wettest season is Spring with 35% of yearly precipitation and 17% occurs in Summer, which is the driest season. The annual rainfall of 9.0 inches in Tempe means that it is drier than most places in Arizona.

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.

August is the rainiest month in Tempe with 4.7 days of rain, and June is the driest month with only 0.5 rainy days. There are 36.2 rainy days annually in Tempe, which is less rainy than most places in Arizona. The rainiest season is Spring when it rains 35% of the time and the driest is Summer with only a 18% 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.

There is rarely any recorded snowfall in Tempe, ranking it as one of the least snowy places in Arizona.

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

Any measurable snowfall is a rare occurance in Tempe.