2025 Compare Climate & Weather:
Boston, MA vs South River, NJ

Highlights

On average, there are 205 sunny days per year in South River. Boston averages 200 sunny days per year. The US average is 205 sunny days.

South River, New Jersey gets 49 inches of rain, on average, per year. Boston, Massachusetts gets 47.4 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

South River averages 23.3 inches of snow per year. Boston averages 48.1 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

South River, New Jersey
Summer High: the July high is around 85.9 degrees
Winter Low: the January low is 22.4
Rain: averages 49 inches of rain a year
Snow: averages 23.3 inches of snow a year

Boston, Massachusetts
Summer High: the July high is around 82.4 degrees
Winter Low: the January low is 19.2
Rain: averages 47.4 inches of rain a year
Snow: averages 48.1 inches of snow a year

BestPlaces Comfort Index

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

The annual BestPlaces Comfort Index for Boston is 6.9 (10=best), which means it is about average compared to other places in Massachusetts.

Today's Weather - Boston, MA

59°F

Today's Weather - South River, NJ

62°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Boston / South River

July is the hottest month for Boston with an average high temperature of 82.4°, which ranks it as warmer than most places in Massachusetts. In Boston, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Boston are June, August and July.

July is the hottest month for South River with an average high temperature of 85.9°, which ranks it as warmer than most places in New Jersey. In South River, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for South River are September, June and May.

January has the coldest nighttime temperatures for Boston with an average of 19.2°. This is about average compared to other places in Massachusetts.

January has the coldest nighttime temperatures for South River with an average of 22.4°. This is about average compared to other places in New Jersey.

In Boston, there are 11.3 days annually when the high temperature is over 90°, which is hotter than most places in Massachusetts.

In South River, there are 19.6 days annually when the high temperature is over 90°, which is hotter than most places in New Jersey.

In Boston, there are 116.4 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Massachusetts.

In South River, there are 104.6 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in New Jersey.

In Boston, there are 1.8 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Massachusetts.

In South River, there are 0.6 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in New Jersey.

March is the wettest month in Boston with 4.6 inches of rain, and the driest month is February with 3.5 inches. The wettest season is Summer with 26% of yearly precipitation and 24% occurs in Spring, which is the driest season. The annual rainfall of 47.4 inches in Boston means that it is drier than most places in Massachusetts.


July is the wettest month in South River with 5.3 inches of rain, and the driest month is February with 2.8 inches. The wettest season is Autumn with 28% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 49.0 inches in South River means that it is wetter than most places in New Jersey.

May is the rainiest month in Boston with 12.4 days of rain, and September is the driest month with only 8.9 rainy days. There are 130.0 rainy days annually in Boston, which is rainier than most places in Massachusetts. 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.

May is the rainiest month in South River with 11.5 days of rain, and September is the driest month with only 8.4 rainy days. There are 116.8 rainy days annually in South River, which is about average compared to other places in New Jersey. 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 48.1 inches in Boston means that it is snowier than most places in Massachusetts.

An annual snowfall of 23.3 inches in South River means that it is about average compared to other places in New Jersey.

January is the snowiest month in Boston with 14.2 inches of snow, and 6 months of the year have significant snowfall.

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