Ashburn (VA) monthly weather averages

Contents

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Ashburn

Ashburn average temperature chart (Celsius) Ashburn average temperature chart (Fahrenheit)
Average monthly temperatures in Ashburn (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 4.6 6.6 12.5 18.3 23.6 28.2 30.6 29.8 26 19.9 13.7 7.2
°F 40.2 43.9 54.5 64.9 74.5 82.8 87 85.6 78.9 67.8 56.6 45

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.

Ashburn monthly rainfall chart (mm) Ashburn monthly rainfall chart (inches)
Average monthly rainfall in Ashburn (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 70 68 86 81 103 92 91 98 89 81 86 83
inches 2.7 2.7 3.4 3.2 4 3.6 3.6 3.8 3.5 3.2 3.4 3.3
Rainy days 10 10 10 10 12 10 10 10 8 8 9 10

Average annual rainfall in Ashburn: 988.766mm (389.3 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Ashburn

Ashburn average daily sunshine chart
Average daily sunshine Ashburn
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.1 5.9 7 8.1 8.9 10 9.7 9.1 7.9 7 5.3 4.6

Day / night temperatures

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

Ashburn average minimum / maximum temperatures (Celsius) Ashburn average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Ashburn (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -5.6 -4.3 0.4 5.2 10.7 15.7 18.4 17.6 13.5 6.6 2.1 -2.9
Max °C 4.8 6.9 12.8 18.6 23.9 28.6 30.9 30.1 26.4 20.2 14 7.5
Min °F 21.9 24.3 32.7 41.4 51.3 60.2 65 63.6 56.2 43.9 35.7 26.9
Max °F 31.3 34.3 43.9 53.4 63.1 71.8 76.3 74.8 67.8 56.1 46.4 36.1

Sea temperature

The graph below shows the average sea temperature.

Ashburn average sea temperature chart (Celsius) Ashburn average sea temperature chart (Fahrenheit)
Average sea temperature around Ashburn in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 2.7 1 1.6 5 10.3 17 22.3 23.6 21.4 16.6 11.2 6.3
°F 36.8 33.8 35 41 50.5 62.6 72.2 74.6 70.6 61.8 52.2 43.4

Wind speed

The graph below shows the average wind speed.

Ashburn average winspeed by month (km/h) Ashburn average winspeed by month (mph)
Average wind speed in Ashburn (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 15 16 17 16 14 13 12 11 12 13 14 14
mph 9 10 10 10 9 8 7 7 7 8 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.

Ashburn relative humidity averages
Average relative humidity in Ashburn
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
66% 65% 63% 62% 68% 70% 72% 74% 74% 72% 69% 69%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Ashburn weather stats

Ashburn weather statistics
Hottest month: July 30.6°C 87.1°F
Driest month: February 68mm 2.7ins
Sunniest month: June 10hrs
Coldest month: January 4.6°C 40.3°F
Wettest month: May 103mm 4.1ins
Warmest sea: August 23.6°C 74.5°F
Map showing location of Ashburn (39.04372, -77.48749) Ashburn map pin © Google

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