The remote server returned an error: (400) Bad Request.The remote server returned an error: (400) Bad Request. 2025 Compare Climate & Weather: Bethlehem, PA vs Princeton, NJ

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

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Highlights

On average, there are 204 sunny days per year in Princeton. Bethlehem averages 202 sunny days per year. The US average is 205 sunny days.

Princeton, New Jersey gets 47.4 inches of rain, on average, per year. Bethlehem, Pennsylvania gets 48 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. Bethlehem averages 30.4 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

Bethlehem, Pennsylvania
Summer High: the July high is around 84.3 degrees
Winter Low: the January low is 18.5
Rain: averages 48 inches of rain a year
Snow: averages 30.4 inches of snow a year

BestPlaces Comfort Index
Princeton

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.

7.2 / 10
September, June and August are the most pleasant months in Princeton, while January and February are the least comfortable months.

Bethlehem

The annual BestPlaces Comfort Index for Bethlehem is 7.1 (10=best), which means it is more comfortable than most places in Pennsylvania.

7.1 / 10
June, September and August are the most pleasant months in Bethlehem, while January and February are the least comfortable months.

Average Monthly High / Low (°F)
MonthBethlehem, PAPrinceton, NJ
January37° / 19°39° / 22°
February41° / 20°42° / 24°
March50° / 27°50° / 31°
April62° / 38°62° / 40°
May72° / 47°72° / 49°
June80° / 57°81° / 59°
July84° / 62°86° / 64°
August83° / 60°84° / 62°
September76° / 52°77° / 54°
October64° / 40°65° / 43°
November53° / 32°55° / 35°
December41° / 23°43° / 27°
Hot, Freezing, Rainy, Snowy Days: Bethlehem / Princeton
MonthHot DaysFreezing DaysRainy DaysSnowy Days
January0 / 029 / 2610 / 115 / 4
February0 / 026 / 249 / 94 / 3
March0 / 022 / 1810 / 112 / 2
April0 / 07 / 511 / 121 / 0
May1 / 11 / 012 / 120 / 0
June2 / 30 / 011 / 110 / 0
July5 / 70 / 010 / 110 / 0
August3 / 40 / 09 / 100 / 0
September1 / 10 / 09 / 90 / 0
October0 / 06 / 39 / 90 / 0
November0 / 015 / 119 / 101 / 0
December0 / 026 / 2310 / 103 / 2
July is the hottest month for Bethlehem with an average high temperature of 84.3°, which ranks it as warmer than most places in Pennsylvania. In Bethlehem, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Bethlehem 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 Bethlehem with an average of 18.5°. This is about average compared to other 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 Bethlehem, there are 12.2 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 Bethlehem, there are 130.9 days annually when the nighttime low temperature falls below freezing, which is about average compared to other 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 Bethlehem, there are 2.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other 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 Bethlehem with 5.1 inches of rain, and the driest month is February with 2.9 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 48.0 inches in Bethlehem means that it is one of the wettest 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 Bethlehem with 11.7 days of rain, and February is the driest month with only 8.7 rainy days. There are 119.6 rainy days annually in Bethlehem, which is less rainy than most places in Pennsylvania. The rainiest season is Summer when it rains 27% 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 30.4 inches in Bethlehem means that it is about average compared to other 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 Bethlehem with 10.3 inches of snow, and 6 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.

DID YOU KNOW?

Many people confuse Weather and Climate, but they are different. Weather refers to the conditions of the atmosphere over a short period of time, while Climate refers to the conditions of the atmosphere over a long period of time.

Weather, more specifically, refers to how the atmosphere behaves and its effects on life and human activities. Most people think of Weather in terms of what can be observed: temperature, humidity, precipitation, and cloudy/sunny conditions. Weather conditions constantly change on a minute-to-minute basis.

Climate is a record of the average weather conditions for a given place over a long period of time, often referred to as Climate Normals. A 30-year period of record is a common requirement to be considered a Climate Normal.

Reviews for Bethlehem    2 Reviews
Jill · Sherman Oaks, CA
re:
Over 16 years ago

Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't  More

   |    Reply
NC For Me · Apex, NC
re:
Over 16 years ago

Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but  More

   |    Reply

Start Your Review of Bethlehem

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Reviews for Princeton    2 Reviews
Jill · Sherman Oaks, CA
re:
Over 16 years ago

Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't  More

   |    Reply
NC For Me · Apex, NC
re:
Over 16 years ago

Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but  More

   |    Reply

Start Your Review of Princeton

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Zips In Bethlehem, Pennsylvania
18017, 18015, 18018
Zips In PRINCETON, NEW JERSEY
08540, 08542
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