Weather in Fairfax County and Northern Virginia uniquely positions us for a four-season climate, with a comfortable spring and fall, hot summers, and plenty of winter for skiing and sledding. This convenient planning chart provides Fairfax County's high and low temperatures by month, as well as helpful weather facts.  Use this to plan your perfect Fairfax Virginia vacations.

Weather Information Including Seasonal Highs and Lows 

Month  High/Low Temperature 
January   41/22 degrees F
February   46/24 degrees F 
March    55/32 degrees F
April    66/40 degrees F 
May    75/50 degrees F 
June    83/59 degrees F 
July    87/64 degrees F 
August     86/63 degrees F 
September    79/56 degrees F 
October    68/52 degrees F 
November    57/34 degrees F 
December    46/26 degrees F 

Other Interesting Weather Facts:

  • On average, the warmest month is July.
  • The highest recorded temperature was 104°F in 1988.
  • On average, January is the coolest month.
  • The lowest recorded temperature was -18°F in 1984.

Tourist Activities for Any Type of Weather:

  • If it's sunny, check out some of the great outdoor recreation in Fairfax County, including kayaking at one of the incredible parks, bald-eagle watching at Mason Neck Wildlife Refuge, hiking at Great Falls National Park, or strolling the gardens at River Farm.
  • If it's rainy, it's a good idea to visit some of our fabulous museums, including Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center, the National Firearms Museum, and Pope-Leighey House at Woodlawn Estate.
  • If it's snowy, bundle up with a hot coffee at Dolcezza Gelato or another of our cozy coffee shops. Take in a performing arts show at 1st Stage Theater or George Mason University's Center for the Arts. Or venture out for one of the County's signature seasonal events. S'mores and fire pits anyone?
  • If it's too hot, bring the family to one of the fun water parks in Northern Virginia.

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