TODAY MAY30
TEMPERATURE83
HUMIDITY31
PRESSURE29.93
WIND COND.310 13.9
  • 7351Sun
  • 7555Mon
  • 7965Tue30%
  • 9169Wed30%30%
  • 8766Thu30%30%
daynightWeather update from Washington/Reagan National Airport, DC at
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Washington 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°F47°F37°F2.7"
February29°F50°F38°F2.3"
March37°F60°F47°F3.2"
April47°F71°F58°F3.4"
May56°F78°F67°F4.6"
June67°F87°F77°F5.3"
July72°F91°F81°F4.2"
August70°F90°F79°F3.2"
September63°F83°F72°F3.5"
October52°F72°F61°F5.0"
November40°F61°F50°F2.5"
December33°F52°F42°F3.8"

Did you know?

  • The highest monthly average temperature in Washington for July is 81 degrees.
  • The lowest monthly average temperature in Washington for January is 37 degrees.
  • The most monthly precipitation in Washington occurs in June with 5.3 inches.
  • The air quality index in Washington is 1% better than the national average.
  • The pollution index in Washington is 10% worse than the national average.

Compare Washington, DC Weather To Other Cities

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      Washington 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.
      IndexWashingtonDistrict of ColumbiaNational
      Air quality index494950
      Pollution index5,554,0105,554,0105,066,862

      Washington air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality194
      Days with moderate air quality166
      Days w/ poor A.Q. for sensitive groups5
      Days with unhealthy air quality

      Washington air quality information

      PollutantTotal
      Arsenic0.010%
      Benzene0.060%
      Carbon Tetrachloride0.010%
      Lead0.004%
      Mercury0.010%

      Average monthly Washington temperature with heat index

      Washington monthly precipitation with daily maximum

      Washington monthly snow depth with daily maximum

      Washington monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Fort Meade, MD9,730468%
      Maryland City, MD17,647468%
      Mount Vernon, VA12,469492%
      Pimmit Hills, VA6,511492%
      Seven Corners, VA8,542492%
      Washington, DC659,009492%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Boston, MA658,279476%
      Memphis, TN655,8574412%
      Denver, CO663,303548%
      Seattle, WA668,849492%
      Nashville, TN643,7714510%
      Washington, DC659,009492%
      Source: The Washington, DC 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.