2025 Compare Climate & Weather:
Summerville, SC vs Gettysburg, PA

Highlights

On average, there are 195 sunny days per year in Gettysburg. Summerville averages 209 sunny days per year. The US average is 205 sunny days.

Gettysburg, Pennsylvania gets 42.9 inches of rain, on average, per year. Summerville, South Carolina gets 51 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Gettysburg averages 25.1 inches of snow per year. Summerville averages 0.7 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Gettysburg, Pennsylvania
Summer High: the July high is around 85.5 degrees
Winter Low: the January low is 20.6
Rain: averages 42.9 inches of rain a year
Snow: averages 25.1 inches of snow a year

Summerville, South Carolina
Summer High: the July high is around 91.5 degrees
Winter Low: the January low is 34.6
Rain: averages 51 inches of rain a year
Snow: averages 0.7 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Gettysburg is 7.2 (10=best), which means it is one of the most pleasant places in Pennsylvania.

The annual BestPlaces Comfort Index for Summerville is 7.3 (10=best), which means it is less comfortable than most places in South Carolina.

Today's Weather - Summerville, SC

71°F

Today's Weather - Gettysburg, PA

53°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Summerville / Gettysburg

July is the hottest month for Summerville with an average high temperature of 91.5°, which ranks it as warmer than most places in South Carolina. In Summerville, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Summerville are October, April and May.

July is the hottest month for Gettysburg with an average high temperature of 85.5°, which ranks it as one of the hottest places in Pennsylvania. In Gettysburg, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Gettysburg are September, June and May.

January has the coldest nighttime temperatures for Summerville with an average of 34.6°. This is warmer than most places in South Carolina.

January has the coldest nighttime temperatures for Gettysburg with an average of 20.6°. This is warmer than most places in Pennsylvania.

In Summerville, there are 60.7 days annually when the high temperature is over 90°, which is hotter than most places in South Carolina.

In Gettysburg, there are 16.6 days annually when the high temperature is over 90°, which is hotter than most places in Pennsylvania.

In Summerville, there are 39.8 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in South Carolina.

In Gettysburg, there are 117.5 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Pennsylvania.

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

In Gettysburg, there are 1.5 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Pennsylvania.

August is the wettest month in Summerville with 6.7 inches of rain, and the driest month is November with 2.8 inches. The wettest season is Autumn with 36% of yearly precipitation and 20% occurs in Summer, which is the driest season. The annual rainfall of 51.0 inches in Summerville means that it is wetter than most places in South Carolina.


September is the wettest month in Gettysburg with 4.4 inches of rain, and the driest month is February with 2.8 inches. The wettest season is Autumn with 26% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 42.9 inches in Gettysburg means that it is about average compared to other places in Pennsylvania.

August is the rainiest month in Summerville with 12.3 days of rain, and November is the driest month with only 6.7 rainy days. There are 103.7 rainy days annually in Summerville, which is about average compared to other places in South Carolina. The rainiest season is Autumn when it rains 33% of the time and the driest is Summer with only a 21% chance of a rainy day.

May is the rainiest month in Gettysburg with 12.3 days of rain, and February is the driest month with only 8.4 rainy days. There are 119.1 rainy days annually in Gettysburg, 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.

An annual snowfall of 0.7 inches in Summerville means that it is about average compared to other places in South Carolina.

An annual snowfall of 25.1 inches in Gettysburg means that it is less snowy than most places in Pennsylvania.

December is the snowiest month in Summerville with 0.3 inches of snow, and no months of the year have significant snowfall.

February is the snowiest month in Gettysburg with 10.6 inches of snow, and 5 months of the year have significant snowfall.