2025 Compare Climate & Weather:
North Charleston, SC vs Summerville, SC

Highlights

On average, there are 209 sunny days per year in Summerville. North Charleston averages 208 sunny days per year. The US average is 205 sunny days.

Summerville, South Carolina gets 51 inches of rain, on average, per year. North Charleston, South Carolina gets 49.4 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Summerville averages 0.7 inches of snow per year. North Charleston averages 0.5 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

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

North Charleston, South Carolina
Summer High: the July high is around 90.3 degrees
Winter Low: the January low is 38
Rain: averages 49.4 inches of rain a year
Snow: averages 0.5 inches of snow a year

BestPlaces Comfort Index

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

The annual BestPlaces Comfort Index for North Charleston is 7.2 (10=best), which means it is less comfortable than most places in South Carolina.

Today's Weather - North Charleston, SC

72°F

Today's Weather - Summerville, SC

71°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: North Charleston / Summerville

July is the hottest month for North Charleston with an average high temperature of 90.3°, which ranks it as cooler than most places in South Carolina. In North Charleston, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for North Charleston are October, April and May.

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.

January has the coldest nighttime temperatures for North Charleston with an average of 38.0°. This is one of the warmest places in South Carolina.

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

In North Charleston, there are 48.6 days annually when the high temperature is over 90°, which is cooler than most places in South Carolina.

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 North Charleston, there are 24.2 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in South Carolina.

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 North Charleston, 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 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.

August is the wettest month in North Charleston with 6.8 inches of rain, and the driest month is November with 2.5 inches. The wettest season is Autumn with 37% of yearly precipitation and 19% occurs in Spring, which is the driest season. The annual rainfall of 49.4 inches in North Charleston means that it is wetter than most places in South Carolina.


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.

August is the rainiest month in North Charleston with 12.3 days of rain, and November is the driest month with only 6.9 rainy days. There are 106.8 rainy days annually in North Charleston, which is rainier than most 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.

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.

An annual snowfall of 0.5 inches in North Charleston means that it is less snowy than most places in South Carolina.

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

December is the snowiest month in North Charleston with 0.2 inches of snow, and no months of the year have significant snowfall.

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