Zip 20879 (Gaithersburg, MD) Climate

The climate of Gaithersburg, MD (20879) is typical for the Mid-Atlantic region, with humid summers and cold winters. Summer temperatures reach high 80's and even low 90's during the day, while nights can be quite cool. Winters are cold, with temperatures often remaining below freezing during the day. Snowfall is common in December through March. The area experiences moderate rainfall throughout the year, and May is typically the rainiest month.

Gaithersburg (zip 20879), Maryland gets 43 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Gaithersburg (zip 20879) averages 24 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 200 sunny days per year in Gaithersburg (zip 20879). The US average is 205 sunny days.

Gaithersburg (zip 20879) gets some kind of precipitation, on average, 111 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 85 degrees
Winter Low: the January low is 26
Rain: averages 43 inches of rain a year
Snow: averages 24 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 20879 zip code is 7.3 (10=best), which means it is more comfortable than most places in Maryland.

8.5 Summer - 5.5 Winter

September, June and May are the most pleasant months in the 20879 zip code, while January and February are the least comfortable months.

Climate	Gaithersburg, Maryland	United States
	Unlock	38.1 in.
	24.4 in.	Unlock
	Unlock	106.2 days
	200 days	Unlock
	84.9°	85.8°
	Unlock	21.7°
	7.3	Unlock
	Unlock	4.3
	437 ft.	Unlock

Climate

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

July is the hottest month for the 20879 zip code with an average high temperature of 84.9°, which ranks it as one of the coolest places in Maryland. In the 20879 zip code, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the 20879 zip code are September, June and August.

In the 20879 zip code, there are 14.1 days annually when the high temperature is over 90°, which is one of the coolest places in Maryland.

January has the coldest nighttime temperatures for the 20879 zip code with an average of 25.5°. This is warmer than most places in Maryland.

In the 20879 zip code, there are 84.8 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Maryland.

In the 20879 zip code, there are 0.4 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Maryland.

The humidity is usually acceptable in the 20879 zip code but some summer months can be sticky or muggy. July is the most humid month, though humidity is low for most of the year. July, August and June are the three most uncomfortably humid months in the 20879 zip code.

May is the wettest month in the 20879 zip code with 4.2 inches of rain, and the driest month is February with 2.8 inches. The wettest season is Winter with 27% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 42.5 inches in the 20879 zip code means that it is drier than most places in Maryland.

May is the rainiest month in the 20879 zip code with 11.3 days of rain, and August is the driest month with only 8.1 rainy days. There are 111.4 rainy days annually in the 20879 zip code, which is less rainy than most 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.

An annual snowfall of 24.4 inches in the 20879 zip code means that it is snowier than most places in Maryland. January is the snowiest month in the 20879 zip code with 9.1 inches of snow, and 6 months of the year have significant snowfall.

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