Charlestown, Maryland 

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Climate in Charlestown, Maryland

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

Charlestown averages 15 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 199 sunny days per year in Charlestown. The US average is 205 sunny days.

Charlestown 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 88 degrees
Winter Low: the January low is 23
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 Charlestown is 7.3 (10=best), which means it is more comfortable than most places in Maryland.

7.3 / 10
September, June and May are the most pleasant months in Charlestown, while January and February are the least comfortable months.

Climate Averages
  Charlestown, MarylandUnited States
  46.2 in.38.1 in.
  15.0 in.27.8 in.
  115.7 days106.2 days
  199 days205 days
  87.7°85.8°
  23.3°21.7°
  7.37
  44.3
  36 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 Charlestown with an average high temperature of 87.7°, which ranks it as warmer than most places in Maryland. In Charlestown, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Charlestown are September, May and June.


January has the coldest nighttime temperatures for Charlestown with an average of 23.3°. This is colder than most places in Maryland.


In Charlestown, there are 25.3 days annually when the high temperature is over 90°, which is about average compared to other places in Maryland.


In Charlestown, there are 100.8 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Maryland.


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


September is the wettest month in Charlestown 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 46.2 inches in Charlestown means that it is one of the wettest places in Maryland.


May is the rainiest month in Charlestown with 11.3 days of rain, and October is the driest month with only 8.2 rainy days. There are 115.7 rainy days annually in Charlestown, 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 Charlestown means that it is about average compared to other places in Maryland. February is the snowiest month in Charlestown with 6.2 inches of snow, and 4 months of the year have significant snowfall.





CLIMATE MAP
  • Annual Rainfall (US Avg: 36.5")
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    ZIP CODES IN CHARLESTOWN, MARYLAND
    21914

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