2025 Compare Climate & Weather:
Atlanta, GA vs Signal Mountain, TN

Highlights

On average, there are 209 sunny days per year in Signal Mountain. Atlanta averages 217 sunny days per year. The US average is 205 sunny days.

Signal Mountain, Tennessee gets 57.2 inches of rain, on average, per year. Atlanta, Georgia gets 51.5 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Signal Mountain averages 3.2 inches of snow per year. Atlanta averages 1.4 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Signal Mountain, Tennessee
Summer High: the July high is around 84.2 degrees
Winter Low: the January low is 26
Rain: averages 57.2 inches of rain a year
Snow: averages 3.2 inches of snow a year

Atlanta, Georgia
Summer High: the July high is around 88.3 degrees
Winter Low: the January low is 32.6
Rain: averages 51.5 inches of rain a year
Snow: averages 1.4 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Signal Mountain is 7.4 (10=best), which means it is more comfortable than most places in Tennessee.

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

Today's Weather - Atlanta, GA

79°F

Today's Weather - Signal Mountain, TN

72°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Atlanta / Signal Mountain

July is the hottest month for Atlanta with an average high temperature of 88.3°, which ranks it as cooler than most places in Georgia. In Atlanta, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Atlanta are May, September and April.

July is the hottest month for Signal Mountain with an average high temperature of 84.2°, which ranks it as one of the coolest places in Tennessee. In Signal Mountain, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Signal Mountain are September, June and May.

January has the coldest nighttime temperatures for Atlanta with an average of 32.6°. This is about average compared to other places in Georgia.

January has the coldest nighttime temperatures for Signal Mountain with an average of 26.0°. This is about average compared to other places in Tennessee.

In Atlanta, there are 31.5 days annually when the high temperature is over 90°, which is cooler than most places in Georgia.

In Signal Mountain, there are 7.9 days annually when the high temperature is over 90°, which is one of the coolest places in Tennessee.

In Atlanta, there are 46.8 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Georgia.

In Signal Mountain, there are 84.1 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Tennessee.

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

In Signal Mountain, there are 0.3 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Tennessee.

July is the wettest month in Atlanta with 5.1 inches of rain, and the driest month is October with 3.5 inches. The wettest season is Autumn with 27% of yearly precipitation and 23% occurs in Winter, which is the driest season. The annual rainfall of 51.5 inches in Atlanta means that it is wetter than most places in Georgia.


December is the wettest month in Signal Mountain with 5.9 inches of rain, and the driest month is October with 3.5 inches. The wettest season is Spring with 28% of yearly precipitation and 22% occurs in Autumn, which is the driest season. The annual rainfall of 57.2 inches in Signal Mountain means that it is wetter than most places in Tennessee.

July is the rainiest month in Atlanta with 11.2 days of rain, and October is the driest month with only 7.0 rainy days. There are 109.3 rainy days annually in Atlanta, which is rainier than most places in Georgia. The rainiest season is Autumn when it rains 28% of the time and the driest is Winter with only a 20% chance of a rainy day.

July is the rainiest month in Signal Mountain with 10.1 days of rain, and October is the driest month with only 6.7 rainy days. There are 105.9 rainy days annually in Signal Mountain, which is less rainy than most places in Tennessee. The rainiest season is Autumn when it rains 27% of the time and the driest is Winter with only a 21% chance of a rainy day.

An annual snowfall of 1.4 inches in Atlanta means that it is snowier than most places in Georgia.

An annual snowfall of 3.2 inches in Signal Mountain means that it is less snowy than most places in Tennessee.

January is the snowiest month in Atlanta with 0.6 inches of snow, and 1 month of the year have significant snowfall.

January is the snowiest month in Signal Mountain with 1.0 inches of snow, and 4 months of the year have significant snowfall.