2025 Compare Climate & Weather:
Harriman, TN vs Greenville, SC

Highlights

On average, there are 220 sunny days per year in Greenville. Harriman averages 207 sunny days per year. The US average is 205 sunny days.

Greenville, South Carolina gets 50.9 inches of rain, on average, per year. Harriman, Tennessee gets 55.6 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Greenville averages 2.5 inches of snow per year. Harriman averages 4.6 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Greenville, South Carolina
Summer High: the July high is around 89.8 degrees
Winter Low: the January low is 30.9
Rain: averages 50.9 inches of rain a year
Snow: averages 2.5 inches of snow a year

Harriman, Tennessee
Summer High: the July high is around 88 degrees
Winter Low: the January low is 26.9
Rain: averages 55.6 inches of rain a year
Snow: averages 4.6 inches of snow a year

BestPlaces Comfort Index

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

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

Today's Weather - Harriman, TN

62°F

Today's Weather - Greenville, SC

64°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Harriman / Greenville

July is the hottest month for Harriman with an average high temperature of 88.0°, which ranks it as cooler than most places in Tennessee. In Harriman, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Harriman are May, September and October.

July is the hottest month for Greenville with an average high temperature of 89.8°, which ranks it as cooler than most places in South Carolina. In Greenville, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Greenville are May, September and October.

January has the coldest nighttime temperatures for Harriman with an average of 26.9°. This is warmer than most places in Tennessee.

January has the coldest nighttime temperatures for Greenville with an average of 30.9°. This is colder than most places in South Carolina.

In Harriman, there are 29.6 days annually when the high temperature is over 90°, which is cooler than most places in Tennessee.

In Greenville, there are 40.6 days annually when the high temperature is over 90°, which is cooler than most places in South Carolina.

In Harriman, there are 83.0 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Tennessee.

In Greenville, there are 57.6 days annually when the nighttime low temperature falls below freezing, which is colder than most places in South Carolina.

In Harriman, there are 0.4 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Tennessee.

In Greenville, 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.

December is the wettest month in Harriman with 5.4 inches of rain, and the driest month is October with 3.2 inches. The wettest season is Spring with 28% of yearly precipitation and 21% occurs in Winter, which is the driest season. The annual rainfall of 55.6 inches in Harriman means that it is wetter than most places in Tennessee.


July is the wettest month in Greenville with 4.9 inches of rain, and the driest month is April with 3.6 inches. The wettest season is Autumn with 28% of yearly precipitation and 24% occurs in Winter, which is the driest season. The annual rainfall of 50.9 inches in Greenville means that it is wetter than most places in South Carolina.

July is the rainiest month in Harriman with 11.7 days of rain, and September is the driest month with only 7.7 rainy days. There are 119.7 rainy days annually in Harriman, which is rainier than most places in Tennessee. The rainiest season is Summer when it rains 27% of the time and the driest is Winter with only a 21% chance of a rainy day.

July is the rainiest month in Greenville with 10.5 days of rain, and October is the driest month with only 6.9 rainy days. There are 105.1 rainy days annually in Greenville, which is rainier than most places in South Carolina. The rainiest season is Autumn when it rains 28% of the time and the driest is Winter with only a 22% chance of a rainy day.

An annual snowfall of 4.6 inches in Harriman means that it is snowier than most places in Tennessee.

An annual snowfall of 2.5 inches in Greenville means that it is one of the snowiest places in South Carolina.

January is the snowiest month in Harriman with 2.0 inches of snow, and 3 months of the year have significant snowfall.

January is the snowiest month in Greenville with 1.2 inches of snow, and 3 months of the year have significant snowfall.