TODAY AUG20
TEMPERATURE
HUMIDITY
PRESSURE
WIND COND.
  • 8067Mon
  • 8270Tue30%70%
  • 8461Wed30%
  • 7959Thu
  • 8362Fri
daynightWeather update from Wilmington, New Castle County Airport at

Charlestown Average Weather

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January27°F41°F35°F2.2"
February28°F45°F37°F1.4"
March36°F54°F45°F4.8"
April46°F65°F56°F1.6"
May55°F73°F65°F8.1"
June64°F82°F75°F3.0"
July70°F87°F80°F0.5"
August67°F84°F76°F1.1"
September61°F78°F70°F1.7"
October50°F68°F59°F7.1"
November39°F57°F48°F2.9"
December33°F47°F40°F4.4"

Did you know?

  • The highest monthly average temperature in Charlestown for July is 80 degrees.
  • The lowest monthly average temperature in Charlestown for January is 35 degrees.
  • The most monthly precipitation in Charlestown occurs in May with 8.1 inches.
  • The air quality index in Charlestown is 9% better than the national average.
  • The pollution index in Charlestown is 47% better than the national average.

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Compare Charlestown, MD Weather To Other Cities

Charlestown air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
IndexCharlestownMarylandNational
Air quality index454350
Pollution index2,654,1906,283,4705,066,862

Charlestown air quality information

MeasurementTotal
Days measured365
Days with good air quality213
Days with moderate air quality144
Days w/ poor A.Q. for sensitive groups8
Days with unhealthy air quality

Charlestown air quality information

PollutantTotal
Arsenic0.002%
Benzene0.030%
Carbon Tetrachloride0.004%
Lead0.000%
Mercury0.005%

Average monthly Charlestown temperature with heat index

Charlestown monthly precipitation with daily maximum

Charlestown monthly snow depth with daily maximum

Charlestown monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Middletown, DE20,0453824%
Elkton, MD15,6873824%
Newark, DE32,9413824%
Townsend, DE2,3203824%
Cecilton, MD1,0363824%
Charlestown, MD1,2484510%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Godley, TX1,2483334%
Highpoint, OH1,248548%
Lyons, OR1,2483138%
Renovo, PA1,2483138%
Sand Point, AK1,2482942%
Charlestown, MD1,2484510%
Source: The Charlestown, MD weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.