Zip 21914 (Charlestown, MD) Climate

In 21914 Charlestown, MD, the climate is characterized by warm and humid summers, cold and sometimes snowy winters, and generally moderate temperatures throughout the year. The average temperature in summer is around 70°F (21°C) while in winter it can dip to around 40°F (4°C). Rainfall is abundant throughout the year, with an annual average of 43 inches (110 cm). Snowfall is common in winter months, typically ranging from 3 to 8 inches (7-20 cm) of snow per season.

Charlestown (zip 21914), Maryland gets 46 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Charlestown (zip 21914) averages 15 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 201 sunny days per year in Charlestown (zip 21914). The US average is 205 sunny days.

Charlestown (zip 21914) 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 87 degrees
Winter Low: the January low is 24
Rain: averages 46 inches of rain a year
Snow: averages 15 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 21914 zip code is 7.3 (10=best), which means it is more comfortable than most places in Maryland.

8.3 Summer - 5.7 Winter

September, June and May are the most pleasant months in the 21914 zip code, while January and February are the least comfortable months.

Climate	Charlestown, Maryland	United States
	Unlock	38.1 in.
	15.0 in.	Unlock
	Unlock	106.2 days
	201 days	Unlock
	87.4°	85.8°
	Unlock	21.7°
	7.3	Unlock
	Unlock	4.3
	15 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 21914 zip code with an average high temperature of 87.4°, which ranks it as about average compared to other places in Maryland. In the 21914 zip code, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the 21914 zip code are September, May and June.

In the 21914 zip code, there are 23.3 days annually when the high temperature is over 90°, which is about average compared to other places in Maryland.

January has the coldest nighttime temperatures for the 21914 zip code with an average of 23.6°. This is colder than most places in Maryland.

In the 21914 zip code, there are 99.3 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Maryland.

In the 21914 zip code, there are 0.3 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Maryland.

The humidity is usually comfortable in the 21914 zip code but some summer months can be unpleasant. July is the most humid month, though humidity is low for most of the year. The most humid months in the 21914 zip code are July, August and June.

September is the wettest month in the 21914 zip code with 4.7 inches of rain, and the driest month is February with 2.8 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 46.0 inches in the 21914 zip code means that it is one of the wettest places in Maryland.

May is the rainiest month in the 21914 zip code with 11.3 days of rain, and October is the driest month with only 8.2 rainy days. There are 115.8 rainy days annually in the 21914 zip code, which is rainier than most places in Maryland. The rainiest season is Summer when it rains 29% of the time and the driest is Winter with only a 22% chance of a rainy day.

An annual snowfall of 15.0 inches in the 21914 zip code means that it is about average compared to other places in Maryland. February is the snowiest month in the 21914 zip code with 6.2 inches of snow, and 4 months of the year have significant snowfall.

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