Washington, D. C. (DC) monthly weather averages

  • Average daytime temperature

    The bar chart below shows the average monthly peak daytime temperatures at Washington, D. C.

    Washington, D. C. average temperature chart
    Average monthly temperatures in Washington, D. C. (degrees centigrade and fahrenheit)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C 4.9 6.8 12.6 18.4 23.8 28.4 30.5 29.7 26 19.9 13.8 7.4
    °F 40.8 44.2 54.7 65.1 74.8 83.2 87 85.5 78.8 67.8 56.8 45.3

    Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

  • Average rainfall & rainy days

    The graph below shows the average rainfall and number of rainy days per month.

    Average monthly rainfall in Washington, D. C. (mm and inches)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    mm 71 70 85 75 96 88 99 103 87 78 83 82
    inches 2.8 2.8 3.4 3 3.8 3.5 3.9 4.1 3.4 3.1 3.3 3.2
    Rainy days 10 10 10 10 11 10 10 9 8 7 9 9
  • Average daily sunshine

    The bar chart below shows the average daily sunshine hours in Washington, D. C.

    Average daily sunshine Washington, D. C.
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Hrs sunshine 5.2 6 7.1 8.1 8.9 10 9.7 9.1 8 7.1 5.5 4.8
  • Day / night temperatures

    The graph below shows the daily range of temperatures for each month.

    Maximum and minimum daily temperatures in Washington, D. C. (degrees centigrade and fahrenheit)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Min °C -4.1 -2.8 1.9 6.8 12.4 17.5 20.2 19.5 15.4 8.7 3.8 -1.4
    Max °C 5.1 7 12.9 18.7 24.1 28.7 30.8 30 26.3 20.2 14.1 7.6
    Min °F 24.6 27 35.4 44.2 54.2 63.5 68.4 67 59.6 47.6 38.8 29.5
    Max °F 32.9 35.8 45.3 54.9 64.8 73.6 77.9 76.5 69.4 57.9 48 37.6
  • Sea temperature

    The graph below shows the average sea temperature.

    Average sea temperature around Washington, D. C. in degrees centigrade and fahrenheit
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C 4.2 2.6 3.3 6.7 11.8 18.2 23.2 24.2 22.1 17.3 12.2 7.7
    °F 39.6 36.6 38 44.1 53.3 64.8 73.7 75.6 71.7 63.2 54 45.8
  • Wind speed

    The graph below shows the average wind speed.

    Average wind speed in Washington, D. C. (mph and kmh)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    km/h 16 17 17 17 15 14 13 12 13 14 15 15
    mph 10 10 11 11 9 9 8 8 8 9 9 9

    A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

  • Relative humidity

    The graph below shows the average relative humidity.

    Average relative humidity in Washington, D. C.
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    64% 62% 60% 59% 67% 68% 69% 71% 72% 69% 67% 66%
Washington, D. C.

Other monthly averages

Washington, D. C. weather stats

Washington, D. C. weather statistics
Hottest month: July 30.5°C 86.9°F
Driest month: February 70mm 2.8ins
Sunniest month: June 10hrs
Coldest month: January 4.9°C 40.8°F
Wettest month: August 103mm 4.1ins
Warmest sea: August 24.2°C 75.6°F
Map showing location of Washington, D. C. (38.89511, -77.03637)

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