7-Day Forecast 38.85°N 77.29°W (Text-Only)
NWS Forecast for: Fairfax VA
Issued by: National Weather Service Baltimore, MD/Washington, D.C.
Last Update: 10:53 pm EDT Jul 16, 2026
Print


  • Tonight

    Tonight: Patchy smoke. Mostly cloudy early, then becoming clear, with a low around 73. North wind around 7 mph, with gusts as high as 18 mph.

    Low: 73 °F

    Patchy Smoke



  • Friday

    Friday: Widespread smoke, mainly after 2pm. Sunny, with a high near 90. North wind around 5 mph becoming calm  in the morning.

    High: 90 °F

    Smoke



  • Friday
    Night

    Friday Night: A chance of showers and thunderstorms after 2am.  Widespread smoke. Increasing clouds, with a low around 72. Southeast wind around 6 mph.  Chance of precipitation is 30%.

    Low: 72 °F

    Smoke then
    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm.  Areas of smoke before noon. High near 89. Southwest wind 6 to 10 mph, with gusts as high as 21 mph.  Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 89 °F

    Chance
    T-storms then
    Showers

  • Saturday
    Night

    Saturday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers.  Low around 72. West wind around 6 mph.  Chance of precipitation is 80%.

    Low: 72 °F

    Showers



  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 11am.  Mostly sunny, with a high near 86. Chance of precipitation is 30%.

    High: 86 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Sunday
    Night

    Sunday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear



  • Monday

    Monday: Sunny, with a high near 86.

    High: 86 °F

    Sunny



  • Monday
    Night

    Monday Night: A slight chance of showers after 2am.  Partly cloudy, with a low around 70. Chance of precipitation is 20%.

    Low: 70 °F

    Partly Cloudy
    then Slight
    Chance
    Showers



  • Tonight: Patchy smoke. Mostly cloudy early, then becoming clear, with a low around 73. North wind around 7 mph, with gusts as high as 18 mph.

    Friday: Widespread smoke, mainly after 2pm. Sunny, with a high near 90. North wind around 5 mph becoming calm in the morning.

    Friday Night: A chance of showers and thunderstorms after 2am. Widespread smoke. Increasing clouds, with a low around 72. Southeast wind around 6 mph. Chance of precipitation is 30%.

    Saturday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. Areas of smoke before noon. High near 89. Southwest wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Saturday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 72. West wind around 6 mph. Chance of precipitation is 80%.

    Sunday: A chance of showers, with thunderstorms also possible after 11am. Mostly sunny, with a high near 86. Chance of precipitation is 30%.

    Sunday Night: Mostly clear, with a low around 68.

    Monday: Sunny, with a high near 86.

    Monday Night: A slight chance of showers after 2am. Partly cloudy, with a low around 70. Chance of precipitation is 20%.

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 40%.

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 50%.

    Wednesday: A slight chance of showers and thunderstorms. Mostly sunny, with a high near 85. Chance of precipitation is 20%.

    Wednesday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 66. Chance of precipitation is 20%.

    Thursday: Sunny, with a high near 83.



    Fairfax VA
     38.85°N 77.29°W (Elev. 400 ft)

    Visit your local NWS office at: https://www.weather.gov/lwx