Zip 20815 (Chevy Chase, MD) Climate

20815 Chevy Chase, MD has a moderate climate with warm summers and cool winters. The average temperature usually ranges between 32 degrees Fahrenheit in the winter to 79 degrees Fahrenheit in the summer months. This area typically experiences mild humidity levels and averages around 40 inches of rainfall per year. During the spring and fall months the temperatures are pleasant and generally sit somewhere between 50-75 degrees Fahrenheit. The region enjoys over 200 days of sunshine each year, making it an ideal spot for outdoor activities all year round.

Chevy Chase (zip 20815), Maryland gets 43 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Chevy Chase (zip 20815) averages 16 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 202 sunny days per year in Chevy Chase (zip 20815). The US average is 205 sunny days.

Chevy Chase (zip 20815) gets some kind of precipitation, on average, 114 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 86 degrees
Winter Low: the January low is 25
Rain: averages 43 inches of rain a year
Snow: averages 16 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 20815 zip code is 7.3 (10=best), which means it is more comfortable than most places in Maryland.

8.2 Summer - 5.7 Winter

September, May and June are the most pleasant months in the 20815 zip code, while January and February are the least comfortable months.

Climate	Chevy Chase, Maryland	United States
	Unlock	38.1 in.
	16.4 in.	Unlock
	Unlock	106.2 days
	202 days	Unlock
	85.5°	85.8°
	Unlock	21.7°
	7.3	Unlock
	Unlock	4.3
	348 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 20815 zip code with an average high temperature of 85.5°, which ranks it as cooler than most places in Maryland. In the 20815 zip code, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the 20815 zip code are September, June and May.

In the 20815 zip code, there are 17.8 days annually when the high temperature is over 90°, which is cooler than most places in Maryland.

January has the coldest nighttime temperatures for the 20815 zip code with an average of 25.3°. This is about average compared to other places in Maryland.

In the 20815 zip code, there are 87.8 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Maryland.

In the 20815 zip code, there are 0.2 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Maryland.

The humidity can be uncomfortably heavy or close in the 20815 zip code during the summer months. July is the most humid month, though humidity is low for most of the year. July, August and June are the three most humid months in the 20815 zip code.

May is the wettest month in the 20815 zip code with 4.2 inches of rain, and the driest month is February with 2.8 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 42.5 inches in the 20815 zip code means that it is drier than most places in Maryland.

May is the rainiest month in the 20815 zip code with 11.7 days of rain, and August is the driest month with only 8.2 rainy days. There are 114.3 rainy days annually in the 20815 zip code, which is rainier 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 16.4 inches in the 20815 zip code means that it is about average compared to other places in Maryland. January is the snowiest month in the 20815 zip code with 6.0 inches of snow, and 5 months of the year have significant snowfall.

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