2025 Compare Climate & Weather:
Potomac, MD vs Raleigh, NC

Highlights

On average, there are 213 sunny days per year in Raleigh. Potomac averages 201 sunny days per year. The US average is 205 sunny days.

Raleigh, North Carolina gets 45.8 inches of rain, on average, per year. Potomac, Maryland gets 42 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Raleigh averages 3.7 inches of snow per year. Potomac averages 16.8 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Raleigh, North Carolina
Summer High: the July high is around 89.5 degrees
Winter Low: the January low is 29.9
Rain: averages 45.8 inches of rain a year
Snow: averages 3.7 inches of snow a year

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

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Raleigh is 7.5 (10=best), which means it is more comfortable than most places in North Carolina.

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

Today's Weather - Potomac, MD

71°F

Today's Weather - Raleigh, NC

78°F

Average Monthly High / Low (°F)

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

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.

July is the hottest month for Raleigh with an average high temperature of 89.5°, which ranks it as warmer than most places in North Carolina. In Raleigh, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Raleigh are May, September and April.

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

January has the coldest nighttime temperatures for Raleigh with an average of 29.9°. This is about average compared to other places in North Carolina.

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

In Raleigh, there are 40.6 days annually when the high temperature is over 90°, which is hotter than most places in North Carolina.

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 Raleigh, there are 65.7 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in North Carolina.

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

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

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.


August is the wettest month in Raleigh with 4.6 inches of rain, and the driest month is April with 3.1 inches. The wettest season is Autumn with 29% of yearly precipitation and 23% occurs in Spring, which is the driest season. The annual rainfall of 45.8 inches in Raleigh means that it is drier than most places in North Carolina.

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.

July is the rainiest month in Raleigh with 10.6 days of rain, and October is the driest month with only 7.0 rainy days. There are 108.3 rainy days annually in Raleigh, which is less rainy than most places in North Carolina. The rainiest season is Autumn when it rains 28% of the time and the driest is Winter with only a 21% chance of a rainy day.

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

An annual snowfall of 3.7 inches in Raleigh means that it is snowier than most places in North Carolina.

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

January is the snowiest month in Raleigh with 1.9 inches of snow, and 3 months of the year have significant snowfall.