2025 Compare Climate & Weather:
Cumming, GA vs Seneca, SC

Highlights

On average, there are 220 sunny days per year in Seneca. Cumming averages 219 sunny days per year. The US average is 205 sunny days.

Seneca, South Carolina gets 53.4 inches of rain, on average, per year. Cumming, Georgia gets 53.8 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Seneca averages 2.3 inches of snow per year. Cumming averages 1.6 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Seneca, South Carolina
Summer High: the July high is around 90.2 degrees
Winter Low: the January low is 31.1
Rain: averages 53.4 inches of rain a year
Snow: averages 2.3 inches of snow a year

Cumming, Georgia
Summer High: the July high is around 87.2 degrees
Winter Low: the January low is 29.3
Rain: averages 53.8 inches of rain a year
Snow: averages 1.6 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Seneca is 7.5 (10=best), which means it is one of the most pleasant places in South Carolina.

The annual BestPlaces Comfort Index for Cumming is 7.6 (10=best), which means it is one of the most pleasant places in Georgia.

Today's Weather - Cumming, GA

58°F

Today's Weather - Seneca, SC

61°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Cumming / Seneca

July is the hottest month for Cumming with an average high temperature of 87.2°, which ranks it as one of the coolest places in Georgia. In Cumming, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Cumming are May, September and June.

July is the hottest month for Seneca with an average high temperature of 90.2°, which ranks it as cooler than most places in South Carolina. In Seneca, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Seneca are May, September and October.

January has the coldest nighttime temperatures for Cumming with an average of 29.3°. This is one of the coldest places in Georgia.

January has the coldest nighttime temperatures for Seneca with an average of 31.1°. This is colder than most places in South Carolina.

In Cumming, there are 22.4 days annually when the high temperature is over 90°, which is one of the coolest places in Georgia.

In Seneca, there are 44.5 days annually when the high temperature is over 90°, which is cooler than most places in South Carolina.

In Cumming, there are 67.8 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Georgia.

In Seneca, there are 58.7 days annually when the nighttime low temperature falls below freezing, which is colder than most places in South Carolina.

In Cumming, there are 0.1 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Georgia.

In Seneca, 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.

March is the wettest month in Cumming with 5.2 inches of rain, and the driest month is October with 3.8 inches. The wettest season is Spring with 27% of yearly precipitation and 23% occurs in Winter, which is the driest season. The annual rainfall of 53.8 inches in Cumming means that it is one of the wettest places in Georgia.


August is the wettest month in Seneca with 5.0 inches of rain, and the driest month is April with 3.7 inches. The wettest season is Spring with 27% of yearly precipitation and 23% occurs in Winter, which is the driest season. The annual rainfall of 53.4 inches in Seneca means that it is one of the wettest places in South Carolina.

January is the rainiest month in Cumming with 10.3 days of rain, and October is the driest month with only 6.8 rainy days. There are 106.8 rainy days annually in Cumming, which is rainier than most places in Georgia. The rainiest season is Spring when it rains 28% of the time and the driest is Winter with only a 21% chance of a rainy day.

July is the rainiest month in Seneca with 10.5 days of rain, and October is the driest month with only 7.2 rainy days. There are 111.0 rainy days annually in Seneca, which is one of the rainiest places in South Carolina. The rainiest season is Autumn when it rains 27% of the time and the driest is Winter with only a 22% chance of a rainy day.

An annual snowfall of 1.6 inches in Cumming means that it is snowier than most places in Georgia.

An annual snowfall of 2.3 inches in Seneca means that it is snowier than most places in South Carolina.

January is the snowiest month in Cumming with 0.8 inches of snow, and 1 month of the year have significant snowfall.

January is the snowiest month in Seneca with 1.1 inches of snow, and 2 months of the year have significant snowfall.