Zip 20837 (Poolesville, MD) Climate

Poolesville, MD is located in the Mid-Atlantic region of the United States and has a humid subtropical climate with hot summers and mild winters. Summers in Poolesville tend to be hot and humid with temperatures reaching up to ninety degrees Fahrenheit in July and August. Winters are mild with an average temperature of thirty five degrees Fahrenheit and occasional snowfall. Precipitation is abundant throughout the year, but especially during the summer months. The area experiences all four seasons, but autumn may be considered the most beautiful season as the trees turn vibrant shades of red, orange, and yellow around October.

Poolesville (zip 20837), Maryland gets 42 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Poolesville (zip 20837) averages 20 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 197 sunny days per year in Poolesville (zip 20837). The US average is 205 sunny days.

Poolesville (zip 20837) gets some kind of precipitation, on average, 116 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 42 inches of rain a year
Snow: averages 20 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 20837 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, June and May are the most pleasant months in the 20837 zip code, while January and February are the least comfortable months.

Climate	Poolesville, Maryland	United States
	42.0 in.	38.1 in.
	20.2 in.	27.8 in.
	116.1 days	106.2 days
	197 days	205 days
	86.4°	85.8°
	24.6°	21.7°
	7.3	7
	4.1	4.3
	363 ft.	2443 ft.

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 20837 zip code with an average high temperature of 86.4°, which ranks it as cooler than most places in Maryland. In the 20837 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 20837 zip code are September, May and June.

In the 20837 zip code, there are 22.3 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 20837 zip code with an average of 24.6°. This is about average compared to other places in Maryland.

In the 20837 zip code, there are 95.3 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Maryland.

In the 20837 zip code, there are 0.6 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Maryland.

The humidity is usually acceptable in the 20837 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 20837 zip code.

May is the wettest month in the 20837 zip code with 4.5 inches of rain, and the driest month is February with 2.7 inches. The wettest season is Summer with 27% of yearly precipitation and 20% occurs in Spring, which is the driest season. The annual rainfall of 42.0 inches in the 20837 zip code means that it is drier than most places in Maryland.

May is the rainiest month in the 20837 zip code with 11.9 days of rain, and October is the driest month with only 8.1 rainy days. There are 116.1 rainy days annually in the 20837 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 22% chance of a rainy day.

An annual snowfall of 20.2 inches in the 20837 zip code means that it is snowier than most places in Maryland. January is the snowiest month in the 20837 zip code with 7.7 inches of snow, and 4 months of the year have significant snowfall.

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