2025 Compare Climate & Weather:
Boston, MA vs Wilmington, DE

Highlights

On average, there are 199 sunny days per year in Wilmington. Boston averages 200 sunny days per year. The US average is 205 sunny days.

Wilmington, Delaware gets 44.7 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.

Wilmington averages 13 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

Wilmington, Delaware
Summer High: the July high is around 86.1 degrees
Winter Low: the January low is 25.2
Rain: averages 44.7 inches of rain a year
Snow: averages 13 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 Wilmington is 7.3 (10=best), which means it is about average compared to other places in Delaware.

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

56°F

Today's Weather - Wilmington, DE

72°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Boston / Wilmington

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 Wilmington with an average high temperature of 86.1°, which ranks it as cooler than most places in Delaware. In Wilmington, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Wilmington 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 Wilmington with an average of 25.2°. This is colder than most places in Delaware.

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

In Wilmington, there are 18.1 days annually when the high temperature is over 90°, which is one of the coolest places in Delaware.

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 Wilmington, there are 84.0 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Delaware.

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 Wilmington, there are 0.3 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Delaware.

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 Wilmington with 4.9 inches of rain, and the driest month is February with 2.7 inches. The wettest season is Autumn with 27% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 44.7 inches in Wilmington means that it is drier than most places in Delaware.

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.

April is the rainiest month in Wilmington with 10.5 days of rain, and August is the driest month with only 7.8 rainy days. There are 110.4 rainy days annually in Wilmington, which is less rainy than most places in Delaware. 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 48.1 inches in Boston means that it is snowier than most places in Massachusetts.

An annual snowfall of 13.0 inches in Wilmington means that it is about average compared to other places in Delaware.

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 Wilmington with 4.8 inches of snow, and 4 months of the year have significant snowfall.