2025 Compare Climate & Weather:
Carlisle, PA vs New London, CT

Highlights

On average, there are 203 sunny days per year in New London. Carlisle averages 200 sunny days per year. The US average is 205 sunny days.

New London, Connecticut gets 50.1 inches of rain, on average, per year. Carlisle, Pennsylvania gets 42.3 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

New London averages 25.7 inches of snow per year. Carlisle averages 30.3 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

New London, Connecticut
Summer High: the July high is around 80.7 degrees
Winter Low: the January low is 21
Rain: averages 50.1 inches of rain a year
Snow: averages 25.7 inches of snow a year

Carlisle, Pennsylvania
Summer High: the July high is around 84.8 degrees
Winter Low: the January low is 20.9
Rain: averages 42.3 inches of rain a year
Snow: averages 30.3 inches of snow a year

BestPlaces Comfort Index

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

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

Today's Weather - Carlisle, PA

66°F

Today's Weather - New London, CT

60°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Carlisle / New London

July is the hottest month for Carlisle with an average high temperature of 84.8°, which ranks it as warmer than most places in Pennsylvania. In Carlisle, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Carlisle are September, June and August.

July is the hottest month for New London with an average high temperature of 80.7°, which ranks it as cooler than most places in Connecticut. In New London, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for New London are August, June and July.

January has the coldest nighttime temperatures for Carlisle with an average of 20.9°. This is warmer than most places in Pennsylvania.

January has the coldest nighttime temperatures for New London with an average of 21.0°. This is warmer than most places in Connecticut.

In Carlisle, there are 11.2 days annually when the high temperature is over 90°, which is hotter than most places in Pennsylvania.

In New London, there are 4.1 days annually when the high temperature is over 90°, which is cooler than most places in Connecticut.

In Carlisle, there are 114.5 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Pennsylvania.

In New London, there are 110.6 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Connecticut.

In Carlisle, there are 0.5 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Pennsylvania.

In New London, there are 1.2 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Connecticut.

May is the wettest month in Carlisle with 4.2 inches of rain, and the driest month is January with 2.8 inches. The wettest season is Autumn with 27% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 42.3 inches in Carlisle means that it is about average compared to other places in Pennsylvania.


March is the wettest month in New London with 4.9 inches of rain, and the driest month is February with 3.5 inches. The wettest season is Summer with 27% of yearly precipitation and 23% occurs in Spring, which is the driest season. The annual rainfall of 50.1 inches in New London means that it is about average compared to other places in Connecticut.

May is the rainiest month in Carlisle with 12.8 days of rain, and September is the driest month with only 8.7 rainy days. There are 122.4 rainy days annually in Carlisle, 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 Spring with only a 23% chance of a rainy day.

May is the rainiest month in New London with 11.3 days of rain, and August is the driest month with only 8.7 rainy days. There are 118.1 rainy days annually in New London, which is about average compared to other places in Connecticut. The rainiest season is Summer when it rains 28% of the time and the driest is Autumn with only a 23% chance of a rainy day.

An annual snowfall of 30.3 inches in Carlisle means that it is about average compared to other places in Pennsylvania.

An annual snowfall of 25.7 inches in New London means that it is one of the least snowy places in Connecticut.

January is the snowiest month in Carlisle with 9.4 inches of snow, and 6 months of the year have significant snowfall.

February is the snowiest month in New London with 7.9 inches of snow, and 6 months of the year have significant snowfall.