2025 Compare Climate & Weather:
Carlisle, PA vs Mechanicsburg, PA

Highlights

On average, there are 195 sunny days per year in Mechanicsburg. Carlisle averages 200 sunny days per year. The US average is 205 sunny days.

Mechanicsburg, Pennsylvania gets 42.7 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.

Mechanicsburg averages 25.8 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

Mechanicsburg, Pennsylvania
Summer High: the July high is around 85.4 degrees
Winter Low: the January low is 21.8
Rain: averages 42.7 inches of rain a year
Snow: averages 25.8 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 Mechanicsburg is 7.1 (10=best), which means it is more comfortable than most places in Pennsylvania.

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

63°F

Today's Weather - Mechanicsburg, PA

66°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Carlisle / Mechanicsburg

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 Mechanicsburg with an average high temperature of 85.4°, which ranks it as warmer than most places in Pennsylvania. In Mechanicsburg, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Mechanicsburg are September, June and August.

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 Mechanicsburg with an average of 21.8°. This is one of the warmest places in Pennsylvania.

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

In Mechanicsburg, there are 12.9 days annually when the high temperature is over 90°, which is hotter than most places in Pennsylvania.

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

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 Mechanicsburg, there are 0.4 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Pennsylvania.

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.


September is the wettest month in Mechanicsburg with 4.2 inches of rain, and the driest month is February 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 42.7 inches in Mechanicsburg means that it is about average compared to other places in Pennsylvania.

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 Mechanicsburg with 12.6 days of rain, and September is the driest month with only 9.0 rainy days. There are 122.8 rainy days annually in Mechanicsburg, 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.

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 25.8 inches in Mechanicsburg means that it is less snowy than most places in Pennsylvania.

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 Mechanicsburg with 8.3 inches of snow, and 6 months of the year have significant snowfall.