2025 Compare Climate & Weather:
Williamsburg, VA vs Mercerville, NJ

Highlights

On average, there are 205 sunny days per year in Mercerville. Williamsburg averages 209 sunny days per year. The US average is 205 sunny days.

Mercerville, New Jersey gets 47.4 inches of rain, on average, per year. Williamsburg, Virginia gets 47.2 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Mercerville averages 19.3 inches of snow per year. Williamsburg averages 6.5 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Mercerville, New Jersey
Summer High: the July high is around 85.4 degrees
Winter Low: the January low is 22.3
Rain: averages 47.4 inches of rain a year
Snow: averages 19.3 inches of snow a year

Williamsburg, Virginia
Summer High: the July high is around 87.8 degrees
Winter Low: the January low is 30
Rain: averages 47.2 inches of rain a year
Snow: averages 6.5 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Mercerville is 7.2 (10=best), which means it is about average compared to other places in New Jersey.

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

Today's Weather - Williamsburg, VA

62°F

Today's Weather - Mercerville, NJ

61°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Williamsburg / Mercerville

July is the hottest month for Williamsburg with an average high temperature of 87.8°, which ranks it as warmer than most places in Virginia. In Williamsburg, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Williamsburg are May, September and June.

July is the hottest month for Mercerville with an average high temperature of 85.4°, which ranks it as about average compared to other places in New Jersey. In Mercerville, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Mercerville are September, June and August.

January has the coldest nighttime temperatures for Williamsburg with an average of 30.0°. This is one of the warmest places in Virginia.

January has the coldest nighttime temperatures for Mercerville with an average of 22.3°. This is about average compared to other places in New Jersey.

In Williamsburg, there are 26.7 days annually when the high temperature is over 90°, which is hotter than most places in Virginia.

In Mercerville, there are 16.4 days annually when the high temperature is over 90°, which is about average compared to other places in New Jersey.

In Williamsburg, there are 64.6 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Virginia.

In Mercerville, there are 106.1 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in New Jersey.

In Williamsburg, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Virginia.

In Mercerville, there are 0.5 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in New Jersey.

August is the wettest month in Williamsburg with 5.1 inches of rain, and the driest month is February with 3.1 inches. The wettest season is Autumn with 29% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 47.2 inches in Williamsburg means that it is one of the wettest places in Virginia.


July is the wettest month in Mercerville with 5.0 inches of rain, and the driest month is February with 2.6 inches. The wettest season is Autumn with 29% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 47.4 inches in Mercerville means that it is about average compared to other places in New Jersey.

July is the rainiest month in Williamsburg with 11.3 days of rain, and October is the driest month with only 7.5 rainy days. There are 116.2 rainy days annually in Williamsburg, which is about average compared to other places in Virginia. 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.

May is the rainiest month in Mercerville with 11.6 days of rain, and September is the driest month with only 8.6 rainy days. There are 120.2 rainy days annually in Mercerville, which is rainier than most places in New Jersey. 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.

An annual snowfall of 6.5 inches in Williamsburg means that it is less snowy than most places in Virginia.

An annual snowfall of 19.3 inches in Mercerville means that it is less snowy than most places in New Jersey.

January is the snowiest month in Williamsburg with 2.6 inches of snow, and 3 months of the year have significant snowfall.

January is the snowiest month in Mercerville with 6.0 inches of snow, and 5 months of the year have significant snowfall.