TODAY MAR28
TEMPERATURE50
HUMIDITY87
PRESSURE101520
WIND COND.
  • 6038Fri
  • 6549Sat20%
  • 6847Sun
  • 5846Mon50%60%
  • 6648Tue50%40%
daynightWeather update from St Marys County Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Charlotte Hall for July is 77.2 degrees
  • The lowest monthly average temperature in Charlotte Hall for January is 34.4 degrees
  • The most monthly precipitation in Charlotte Hall occurs in July with 5.9 inches
  • The air quality index in Charlotte Hall is 12% worse than the national average
  • The pollution index in Charlotte Hall is 86% better than the national average

Compare Charlotte Hall, MD Weather

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      Charlotte Hall Average Temperature

      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
      January28°F43°F34°F1.3"
      February30°F47°F37°F0.4"
      March37°F57°F46°F1.8"
      April47°F69°F57°F0.8"
      May56°F76°F65°F2.5"
      June64°F84°F73°F0.1"
      July68°F89°F77°F5.9"
      August66°F86°F75°F2.6"
      September60°F80°F69°F4.2"
      October49°F69°F57°F2.4"
      November38°F57°F46°F0.9"
      December33°F48°F40°F0.6"

      Charlotte Hall 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.
      IndexCharlotte HallMarylandNational
      Air quality index474342
      Pollution index384,1335,342,3672,726,193

      Charlotte Hall air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality209
      Days with moderate air quality145
      Days w/ poor A.Q. for sensitive groups10
      Days with unhealthy air quality1

      Charlotte Hall air quality information

      PollutantTotal
      Arsenic0.010%
      Benzene0.010%
      Carbon Tetrachloride0.001%
      Lead0.003%
      Mercury0.000%

      Average monthly Charlotte Hall temperature with heat index

      Charlotte Hall monthly precipitation with daily maximum

      Charlotte Hall monthly snow depth with daily maximum

      Charlotte Hall monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Broomes Island, MD5134118.0%
      Prince Frederick, MD2,7094118.0%
      Leonardtown, MD3,7954118.0%
      Bryantown, MD464476.0%
      Hughesville, MD2,525476.0%
      Charlotte Hall, MD1,740476.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Blackwater, AZ1,7407448.0%
      Boronda, CA1,7403726.0%
      Fern Acres, HI1,7401668.0%
      Wilder, ID1,7403628.0%
      Richmond, ME1,7402844.0%
      Charlotte Hall, MD1,740476.0%
      Source: The Charlotte Hall, 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.