2025 Compare Climate & Weather:
Gaithersburg, MD vs Wilmington, DE

Highlights

On average, there are 199 sunny days per year in Wilmington. Gaithersburg averages 202 sunny days per year. The US average is 205 sunny days.

Wilmington, Delaware gets 44.7 inches of rain, on average, per year. Gaithersburg, Maryland gets 42.2 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. Gaithersburg averages 21.4 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

Gaithersburg, Maryland
Summer High: the July high is around 85.1 degrees
Winter Low: the January low is 25
Rain: averages 42.2 inches of rain a year
Snow: averages 21.4 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 Gaithersburg is 7.3 (10=best), which means it is more comfortable than most places in Maryland.

Today's Weather - Gaithersburg, MD

61°F

Today's Weather - Wilmington, DE

61°F

Average Monthly High / Low (°F)

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

July is the hottest month for Gaithersburg with an average high temperature of 85.1°, which ranks it as one of the coolest places in Maryland. In Gaithersburg, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Gaithersburg are September, June and May.

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 Gaithersburg with an average of 25.0°. This is about average compared to other places in Maryland.

January has the coldest nighttime temperatures for Wilmington with an average of 25.2°. This is colder than most places in Delaware.

In Gaithersburg, there are 15.3 days annually when the high temperature is over 90°, which is cooler than most places in Maryland.

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 Gaithersburg, there are 90.3 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Maryland.

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 Gaithersburg, there are 0.5 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Maryland.

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.

May is the wettest month in Gaithersburg with 4.3 inches of rain, and the driest month is February with 2.7 inches. The wettest season is Summer with 27% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 42.2 inches in Gaithersburg means that it is drier than most places in Maryland.


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 Gaithersburg with 11.6 days of rain, and August is the driest month with only 8.2 rainy days. There are 112.7 rainy days annually in Gaithersburg, which is about average compared to other places in Maryland. 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 21.4 inches in Gaithersburg means that it is snowier than most places in Maryland.

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 Gaithersburg with 8.5 inches of snow, and 5 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.