Forecast

    Forecast for Fairfax, VA | Forecast Periods: 14
    Monday
    Mar 16
    2026

    Fairfax, VA

    Updated: 4:54 PM EDT

    70°F

    Showers And Thunderstorms Likely

    21 mph S
    Precipitation: 59%

    Showers and thunderstorms likely. Some of the storms could be severe. Cloudy, with a high near 70. South wind around 21 mph, with gusts as high as 43 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

    Hourly Forecast

    MON16:00
    68°F
    Chance Showers And Thunderstorms
    Dewpoint:16.1°Precip:54%Humidity:78%Wind:20 mph S
    MON17:00
    67°F
    Showers And Thunderstorms Likely
    Dewpoint:16.1°Precip:59%Humidity:81%Wind:21 mph S
    MON18:00
    65°F
    Showers And Thunderstorms Likely
    Dewpoint:15°Precip:59%Humidity:81%Wind:21 mph SW
    MON19:00
    64°F
    Showers And Thunderstorms
    Dewpoint:14.4°Precip:83%Humidity:81%Wind:20 mph W
    TUE20:00
    56°F
    Rain Showers
    Dewpoint:10°Precip:91%Humidity:80%Wind:18 mph W
    TUE21:00
    48°F
    Rain Showers
    Dewpoint:5°Precip:93%Humidity:77%Wind:22 mph W
    TUE22:00
    43°F
    Rain Showers
    Dewpoint:2.2°Precip:87%Humidity:76%Wind:25 mph W
    TUE23:00
    39°F
    Rain And Snow Showers Likely
    Dewpoint:0.6°Precip:61%Humidity:79%Wind:21 mph W
    TUE00:00
    39°F
    Mostly Cloudy
    Dewpoint:-1.1°Precip:13%Humidity:70%Wind:16 mph W
    TUE01:00
    37°F
    Partly Cloudy
    Dewpoint:-3.9°Precip:2%Humidity:61%Wind:15 mph W
    TUE02:00
    35°F
    Mostly Clear
    Dewpoint:-5.6°Precip:2%Humidity:59%Wind:16 mph W
    TUE03:00
    34°F
    Mostly Clear
    Dewpoint:-5.6°Precip:2%Humidity:61%Wind:16 mph W
    TUE04:00
    33°F
    Mostly Clear
    Dewpoint:-6.7°Precip:2%Humidity:58%Wind:16 mph W
    TUE05:00
    31°F
    Mostly Clear
    Dewpoint:-7.2°Precip:1%Humidity:61%Wind:15 mph W
    TUE06:00
    31°F
    Sunny
    Dewpoint:-8.3°Precip:1%Humidity:56%Wind:14 mph W
    TUE07:00
    30°F
    Sunny
    Dewpoint:-8.3°Precip:1%Humidity:58%Wind:13 mph W
    TUE08:00
    29°F
    Sunny
    Dewpoint:-8.3°Precip:1%Humidity:60%Wind:12 mph W
    TUE09:00
    31°F
    Sunny
    Dewpoint:-8.3°Precip:1%Humidity:56%Wind:12 mph W
    TUE10:00
    33°F
    Sunny
    Dewpoint:-8.3°Precip:1%Humidity:51%Wind:12 mph W
    TUE11:00
    35°F
    Sunny
    Dewpoint:-8.3°Precip:1%Humidity:47%Wind:13 mph W
    TUE12:00
    36°F
    Mostly Sunny
    Dewpoint:-7.8°Precip:1%Humidity:47%Wind:12 mph W
    TUE13:00
    38°F
    Mostly Sunny
    Dewpoint:-7.8°Precip:1%Humidity:44%Wind:12 mph W
    TUE14:00
    39°F
    Partly Sunny
    Dewpoint:-7.8°Precip:11%Humidity:42%Wind:13 mph W
    TUE15:00
    39°F
    Mostly Cloudy
    Dewpoint:-7.8°Precip:11%Humidity:42%Wind:13 mph W

    Extended Forecast

    Tonight

    Mon, Mar 16
    29°F
    Rain And Snow Showers Likely then Mostly Cloudy
    15 mph W
    Precipitation: 93%
    Showers and thunderstorms before 11pm, then rain and snow showers likely between 11pm and midnight. Some of the storms could be severe and produce heavy rain. Mostly cloudy, with a low around 29. West wind 15 to 25 mph, with gusts as high as 54 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

    Tuesday

    Tue, Mar 17
    40°F
    Mostly Sunny
    14 mph W
    Precipitation: 11%
    Mostly sunny, with a high near 40. West wind around 14 mph, with gusts as high as 25 mph.

    Tuesday Night

    Tue, Mar 17
    25°F
    Partly Cloudy
    5 mph NW
    Precipitation: 11%
    Partly cloudy, with a low around 25. Northwest wind 5 to 13 mph, with gusts as high as 24 mph.

    Wednesday

    Wed, Mar 18
    41°F
    Partly Sunny
    3 mph N
    Precipitation: 0%
    Partly sunny, with a high near 41. North wind 3 to 7 mph.

    Wednesday Night

    Wed, Mar 18
    30°F
    Partly Cloudy
    7 mph S
    Precipitation: 2%
    Partly cloudy, with a low around 30.

    Thursday

    Thu, Mar 19
    52°F
    Partly Sunny
    7 mph S
    Precipitation: 3%
    Partly sunny, with a high near 52.

    Thursday Night

    Thu, Mar 19
    38°F
    Mostly Cloudy
    6 mph S
    Precipitation: 11%
    Mostly cloudy, with a low around 38.

    Friday

    Fri, Mar 20
    61°F
    Partly Sunny
    3 mph W
    Precipitation: 10%
    Partly sunny, with a high near 61.

    Friday Night

    Fri, Mar 20
    44°F
    Chance Light Rain
    8 mph SW
    Precipitation: 28%
    A chance of rain after 8pm. Mostly cloudy, with a low around 44. Chance of precipitation is 30%.

    Saturday

    Sat, Mar 21
    61°F
    Slight Chance Light Rain
    8 mph W
    Precipitation: 21%
    A slight chance of rain. Mostly cloudy, with a high near 61.

    Saturday Night

    Sat, Mar 21
    43°F
    Slight Chance Light Rain
    12 mph SW
    Precipitation: 21%
    A slight chance of rain before 2am. Mostly cloudy, with a low around 43.

    Sunday

    Sun, Mar 22
    65°F
    Mostly Sunny then Slight Chance Light Rain
    9 mph W
    Precipitation: 15%
    A slight chance of rain after 2pm. Mostly sunny, with a high near 65.

    Sunday Night

    Sun, Mar 22
    38°F
    Slight Chance Light Rain
    13 mph NW
    Precipitation: 21%
    A slight chance of rain. Mostly cloudy, with a low around 38.

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