2025 Compare Climate & Weather:
Sterling, VA vs Groton, CT

Highlights

On average, there are 204 sunny days per year in Groton. Sterling averages 197 sunny days per year. The US average is 205 sunny days.

Groton, Connecticut gets 47.9 inches of rain, on average, per year. Sterling, Virginia gets 42 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Groton averages 26.6 inches of snow per year. Sterling averages 21.5 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Groton, Connecticut
Summer High: the July high is around 79.6 degrees
Winter Low: the January low is 21.7
Rain: averages 47.9 inches of rain a year
Snow: averages 26.6 inches of snow a year

Sterling, Virginia
Summer High: the July high is around 85.8 degrees
Winter Low: the January low is 23.5
Rain: averages 42 inches of rain a year
Snow: averages 21.5 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Groton is 7.1 (10=best), which means it is more comfortable than most places in Connecticut.

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

Today's Weather - Sterling, VA

55°F

Today's Weather - Groton, CT

48°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Sterling / Groton

July is the hottest month for Sterling with an average high temperature of 85.8°, which ranks it as cooler than most places in Virginia. In Sterling, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Sterling are September, June and May.

July is the hottest month for Groton with an average high temperature of 79.6°, which ranks it as one of the coolest places in Connecticut. In Groton, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Groton are August, July and June.

January has the coldest nighttime temperatures for Sterling with an average of 23.5°. This is colder than most places in Virginia.

January has the coldest nighttime temperatures for Groton with an average of 21.7°. This is one of the warmest places in Connecticut.

In Sterling, there are 19.2 days annually when the high temperature is over 90°, which is cooler than most places in Virginia.

In Groton, there are 1.7 days annually when the high temperature is over 90°, which is one of the coolest places in Connecticut.

In Sterling, there are 104.0 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Virginia.

In Groton, there are 106.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Connecticut.

In Sterling, there are 0.6 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Virginia.

In Groton, there are 0.9 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Connecticut.

May is the wettest month in Sterling with 4.5 inches of rain, and the driest month is February with 2.7 inches. The wettest season is Summer with 27% of yearly precipitation and 20% occurs in Spring, which is the driest season. The annual rainfall of 42.0 inches in Sterling means that it is drier than most places in Virginia.


March is the wettest month in Groton with 4.7 inches of rain, and the driest month is February with 3.1 inches. The wettest season is Summer with 27% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 47.9 inches in Groton means that it is drier than most places in Connecticut.

May is the rainiest month in Sterling with 11.9 days of rain, and October is the driest month with only 8.1 rainy days. There are 116.2 rainy days annually in Sterling, which is about average compared to other places in Virginia. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 22% chance of a rainy day.

May is the rainiest month in Groton with 11.4 days of rain, and August is the driest month with only 8.8 rainy days. There are 118.6 rainy days annually in Groton, which is about average compared to other places in Connecticut. The rainiest season is Summer when it rains 28% of the time and the driest is Autumn with only a 23% chance of a rainy day.

An annual snowfall of 21.5 inches in Sterling means that it is one of the snowiest places in Virginia.

An annual snowfall of 26.6 inches in Groton means that it is less snowy than most places in Connecticut.

February is the snowiest month in Sterling with 7.8 inches of snow, and 5 months of the year have significant snowfall.

February is the snowiest month in Groton with 7.8 inches of snow, and 6 months of the year have significant snowfall.