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Climate & Weather Averages in Fairfax, Virginia, USA

Now
39 °F

Overcast.


Feels Like: 39 °F
Forecast: 45 / 37 °F
Wind: No wind

Location: Washington-Dulles International Airport

Current Time: Feb 22, 2019 at 5:38:02 am

Latest Report: Feb 22, 2019 at 4:52 am


Visibility: 10 mi

Pressure: 30.28 "Hg

Humidity: 86%

Dew Point: 35 °F

Location of FairfaxLocation

Annual Weather Averages Near Fairfax

Averages are for Washington-Dulles International Airport, which is 11 miles from Fairfax.

Based on weather reports collected during 1985–2015.

All Year Climate & Weather Averages in Fairfax

High Temp: 88 °F

Low Temp: 25 °F

Mean Temp: 55 °F

Precipitation: 1.70"

Humidity: 67%

Dew Point: 44 °F

Wind: 6 mph

Pressure: 30.06 "Hg

Visibility: 10 mi

January Climate & Weather Averages in Fairfax

High Temp: 43 °F

Low Temp: 25 °F

Mean Temp: 34 °F

Precipitation: 1.38"

Humidity: 65%

Dew Point: 22 °F

Wind: 6 mph

Pressure: 30.12 "Hg

Visibility: 10 mi

February Climate & Weather Averages in Fairfax

High Temp: 45 °F

Low Temp: 26 °F

Mean Temp: 36 °F

Precipitation: 1.21"

Humidity: 62%

Dew Point: 23 °F

Wind: 7 mph

Pressure: 30.10 "Hg

Visibility: 10 mi

March Climate & Weather Averages in Fairfax

High Temp: 55 °F

Low Temp: 33 °F

Mean Temp: 44 °F

Precipitation: 1.76"

Humidity: 61%

Dew Point: 30 °F

Wind: 7 mph

Pressure: 30.08 "Hg

Visibility: 10 mi

April Climate & Weather Averages in Fairfax

High Temp: 66 °F

Low Temp: 42 °F

Mean Temp: 54 °F

Precipitation: 1.71"

Humidity: 60%

Dew Point: 40 °F

Wind: 7 mph

Pressure: 30.00 "Hg

Visibility: 11 mi

May Climate & Weather Averages in Fairfax

High Temp: 75 °F

Low Temp: 52 °F

Mean Temp: 64 °F

Precipitation: 2.63"

Humidity: 68%

Dew Point: 52 °F

Wind: 6 mph

Pressure: 30.01 "Hg

Visibility: 9 mi

June Climate & Weather Averages in Fairfax

High Temp: 84 °F

Low Temp: 62 °F

Mean Temp: 73 °F

Precipitation: 2.00"

Humidity: 69%

Dew Point: 62 °F

Wind: 5 mph

Pressure: 29.98 "Hg

Visibility: 9 mi

July Climate & Weather Averages in Fairfax

High Temp: 88 °F

Low Temp: 67 °F

Mean Temp: 77 °F

Precipitation: 1.89"

Humidity: 69%

Dew Point: 66 °F

Wind: 5 mph

Pressure: 29.99 "Hg

Visibility: 8 mi

August Climate & Weather Averages in Fairfax

High Temp: 86 °F

Low Temp: 65 °F

Mean Temp: 76 °F

Precipitation: 1.49"

Humidity: 70%

Dew Point: 64 °F

Wind: 4 mph

Pressure: 30.02 "Hg

Visibility: 9 mi

September Climate & Weather Averages in Fairfax

High Temp: 79 °F

Low Temp: 57 °F

Mean Temp: 68 °F

Precipitation: 1.73"

Humidity: 71%

Dew Point: 58 °F

Wind: 5 mph

Pressure: 30.07 "Hg

Visibility: 9 mi

October Climate & Weather Averages in Fairfax

High Temp: 68 °F

Low Temp: 44 °F

Mean Temp: 56 °F

Precipitation: 1.37"

Humidity: 70%

Dew Point: 46 °F

Wind: 5 mph

Pressure: 30.09 "Hg

Visibility: 10 mi

November Climate & Weather Averages in Fairfax

High Temp: 57 °F

Low Temp: 35 °F

Mean Temp: 46 °F

Precipitation: 1.55"

Humidity: 67%

Dew Point: 35 °F

Wind: 6 mph

Pressure: 30.14 "Hg

Visibility: 10 mi

December Climate & Weather Averages in Fairfax

High Temp: 46 °F

Low Temp: 28 °F

Mean Temp: 37 °F

Precipitation: 1.71"

Humidity: 68%

Dew Point: 27 °F

Wind: 6 mph

Pressure: 30.14 "Hg

Visibility: 10 mi

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Quick Climate Info

Hottest MonthJuly (77 °F avg)
Coldest MonthJanuary (34 °F avg)
Wettest MonthMay (2.63" avg)
Windiest MonthMarch (7 mph avg)
Annual Rainfall20.44" (per year)

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