2025 Compare Climate & Weather:
Herndon, VA vs Nassau, NY

Highlights

On average, there are 180 sunny days per year in Nassau. Herndon averages 201 sunny days per year. The US average is 205 sunny days.

Nassau, New York gets 43.2 inches of rain, on average, per year. Herndon, Virginia gets 42.9 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Nassau averages 55.4 inches of snow per year. Herndon averages 21.5 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Nassau, New York
Summer High: the July high is around 81.5 degrees
Winter Low: the January low is 13.4
Rain: averages 43.2 inches of rain a year
Snow: averages 55.4 inches of snow a year

Herndon, Virginia
Summer High: the July high is around 85.8 degrees
Winter Low: the January low is 23.5
Rain: averages 42.9 inches of rain a year
Snow: averages 21.5 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Nassau is 6.7 (10=best), which means it is about average compared to other places in New York.

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

Today's Weather - Herndon, VA

63°F

Today's Weather - Nassau, NY

56°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Herndon / Nassau

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

July is the hottest month for Nassau with an average high temperature of 81.5°, which ranks it as about average compared to other places in New York. In Nassau, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Nassau are June, August and July.

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

January has the coldest nighttime temperatures for Nassau with an average of 13.4°. This is colder than most places in New York.

In Herndon, there are 18.9 days annually when the high temperature is over 90°, which is cooler than most places in Virginia.

In Nassau, there are 6.2 days annually when the high temperature is over 90°, which is about average compared to other places in New York.

In Herndon, there are 103.9 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Virginia.

In Nassau, there are 143.4 days annually when the nighttime low temperature falls below freezing, which is colder than most places in New York.

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

In Nassau, there are 9.3 days annually when the nighttime low temperature falls below zero°, which is colder than most places in New York.

May is the wettest month in Herndon with 4.6 inches of rain, and the driest month is February with 2.8 inches. The wettest season is Summer with 28% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 42.9 inches in Herndon means that it is drier than most places in Virginia.


June is the wettest month in Nassau with 4.5 inches of rain, and the driest month is February with 2.3 inches. The wettest season is Autumn with 30% of yearly precipitation and 19% occurs in Spring, which is the driest season. The annual rainfall of 43.2 inches in Nassau means that it is drier than most places in New York.

May is the rainiest month in Herndon with 12.2 days of rain, and October is the driest month with only 8.1 rainy days. There are 119.5 rainy days annually in Herndon, which is rainier than most 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 Nassau with 12.5 days of rain, and February is the driest month with only 9.0 rainy days. There are 128.0 rainy days annually in Nassau, which is about average compared to other places in New York. The rainiest season is Summer when it rains 27% of the time and the driest is Spring with only a 23% chance of a rainy day.

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

An annual snowfall of 55.4 inches in Nassau means that it is snowier than most places in New York.

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

January is the snowiest month in Nassau with 15.5 inches of snow, and 7 months of the year have significant snowfall.