2025 Compare Climate & Weather:
Nashville, TN vs Potomac, MD

Highlights

On average, there are 201 sunny days per year in Potomac. Nashville averages 205 sunny days per year. The US average is 205 sunny days.

Potomac, Maryland gets 42 inches of rain, on average, per year. Nashville, Tennessee gets 49.3 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Potomac averages 16.8 inches of snow per year. Nashville averages 3.6 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Potomac, Maryland
Summer High: the July high is around 85.7 degrees
Winter Low: the January low is 25.3
Rain: averages 42 inches of rain a year
Snow: averages 16.8 inches of snow a year

Nashville, Tennessee
Summer High: the July high is around 89.1 degrees
Winter Low: the January low is 26.8
Rain: averages 49.3 inches of rain a year
Snow: averages 3.6 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Potomac is 7.3 (10=best), which means it is more comfortable than most places in Maryland.

The annual BestPlaces Comfort Index for Nashville-Davidson is 7.3 (10=best), which means it is about average compared to other places in Tennessee.

Today's Weather - Nashville, TN

64°F

Today's Weather - Potomac, MD

78°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Nashville / Potomac

August is the hottest month for Nashville-Davidson with an average high temperature of 89.1°, which ranks it as warmer than most places in Tennessee. In Nashville-Davidson, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Nashville-Davidson are May, September and October.

July is the hottest month for Potomac with an average high temperature of 85.7°, which ranks it as cooler than most places in Maryland. In Potomac, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Potomac are September, June and May.

January has the coldest nighttime temperatures for Nashville-Davidson with an average of 26.8°. This is warmer than most places in Tennessee.

January has the coldest nighttime temperatures for Potomac with an average of 25.3°. This is about average compared to other places in Maryland.

In Nashville-Davidson, there are 37.6 days annually when the high temperature is over 90°, which is hotter than most places in Tennessee.

In Potomac, there are 18.6 days annually when the high temperature is over 90°, which is cooler than most places in Maryland.

In Nashville-Davidson, there are 83.5 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Tennessee.

In Potomac, there are 87.4 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Maryland.

In Nashville-Davidson, there are 0.5 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Tennessee.

In Potomac, there are 0.2 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Maryland.

May is the wettest month in Nashville-Davidson with 5.7 inches of rain, and the driest month is October with 3.2 inches. The wettest season is Summer with 29% of yearly precipitation and 22% occurs in Winter, which is the driest season. The annual rainfall of 49.3 inches in Nashville-Davidson means that it is drier than most places in Tennessee.


May is the wettest month in Potomac with 4.3 inches of rain, and the driest month is February with 2.7 inches. The wettest season is Summer with 27% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 42.0 inches in Potomac means that it is drier than most places in Maryland.

May is the rainiest month in Nashville-Davidson with 11.8 days of rain, and September is the driest month with only 7.7 rainy days. There are 117.2 rainy days annually in Nashville-Davidson, which is about average compared to other places in Tennessee. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 21% chance of a rainy day.

May is the rainiest month in Potomac with 11.9 days of rain, and February is the driest month with only 8.4 rainy days. There are 114.0 rainy days annually in Potomac, which is about average compared to other places in Maryland. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 23% chance of a rainy day.

An annual snowfall of 3.6 inches in Nashville-Davidson means that it is about average compared to other places in Tennessee.

An annual snowfall of 16.8 inches in Potomac means that it is snowier than most places in Maryland.

January is the snowiest month in Nashville-Davidson with 1.5 inches of snow, and 2 months of the year have significant snowfall.

January is the snowiest month in Potomac with 6.4 inches of snow, and 5 months of the year have significant snowfall.