Forecast

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

    Herndon, VA

    Updated: 4:54 PM EDT

    29°F

    Rain And Snow Showers Likely then Mostly Cloudy

    14 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. Mostly cloudy, with a low around 29. West wind 14 to 28 mph, with gusts as high as 52 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    Hourly Forecast

    TUE20:00
    53°F
    Rain Showers
    Dewpoint:9.4°Precip:93%Humidity:86%Wind:17 mph NW
    TUE21:00
    46°F
    Rain Showers
    Dewpoint:3.3°Precip:92%Humidity:73%Wind:23 mph NW
    TUE22:00
    42°F
    Rain Showers
    Dewpoint:1.7°Precip:84%Humidity:76%Wind:28 mph W
    TUE23:00
    39°F
    Rain And Snow Showers Likely
    Dewpoint:0°Precip:56%Humidity:76%Wind:22 mph W
    TUE00:00
    39°F
    Mostly Cloudy
    Dewpoint:-1.1°Precip:11%Humidity:70%Wind:16 mph W
    TUE01:00
    36°F
    Mostly Clear
    Dewpoint:-3.9°Precip:2%Humidity:64%Wind:17 mph W
    TUE02:00
    34°F
    Partly Cloudy
    Dewpoint:-5°Precip:2%Humidity:64%Wind:18 mph W
    TUE03:00
    33°F
    Partly Cloudy
    Dewpoint:-5.6°Precip:2%Humidity:63%Wind:17 mph W
    TUE04:00
    33°F
    Mostly Clear
    Dewpoint:-6.7°Precip:2%Humidity:58%Wind:15 mph W
    TUE05:00
    31°F
    Mostly Clear
    Dewpoint:-7.8°Precip:1%Humidity:58%Wind:14 mph W
    TUE06:00
    30°F
    Sunny
    Dewpoint:-7.8°Precip:1%Humidity:60%Wind:13 mph W
    TUE07:00
    30°F
    Sunny
    Dewpoint:-8.3°Precip:1%Humidity:58%Wind:13 mph W
    TUE08:00
    30°F
    Sunny
    Dewpoint:-8.3°Precip:1%Humidity:58%Wind:12 mph W
    TUE09:00
    31°F
    Sunny
    Dewpoint:-7.8°Precip:1%Humidity:58%Wind:12 mph W
    TUE10:00
    33°F
    Sunny
    Dewpoint:-7.8°Precip:1%Humidity:53%Wind:13 mph W
    TUE11:00
    34°F
    Mostly Sunny
    Dewpoint:-8.3°Precip:1%Humidity:49%Wind:13 mph W
    TUE12:00
    36°F
    Mostly Sunny
    Dewpoint:-7.8°Precip:1%Humidity:47%Wind:13 mph W
    TUE13:00
    37°F
    Mostly Sunny
    Dewpoint:-7.8°Precip:1%Humidity:46%Wind:13 mph W
    TUE14:00
    38°F
    Partly Sunny
    Dewpoint:-7.8°Precip:11%Humidity:44%Wind:14 mph W
    TUE15:00
    38°F
    Partly Sunny
    Dewpoint:-8.3°Precip:11%Humidity:42%Wind:15 mph W
    TUE16:00
    39°F
    Partly Sunny
    Dewpoint:-8.3°Precip:11%Humidity:40%Wind:16 mph W
    TUE17:00
    38°F
    Partly Sunny
    Dewpoint:-8.3°Precip:11%Humidity:42%Wind:16 mph W
    TUE18:00
    37°F
    Mostly Cloudy
    Dewpoint:-8.9°Precip:11%Humidity:42%Wind:15 mph W
    TUE19:00
    36°F
    Partly Cloudy
    Dewpoint:-8.9°Precip:11%Humidity:43%Wind:14 mph NW

    Extended Forecast

    Tuesday

    Tue, Mar 17
    39°F
    Mostly Sunny
    12 mph W
    Precipitation: 11%
    Mostly sunny, with a high near 39. West wind 12 to 16 mph, with gusts as high as 28 mph.

    Tuesday Night

    Tue, Mar 17
    24°F
    Partly Cloudy
    3 mph NW
    Precipitation: 11%
    Partly cloudy, with a low around 24. Northwest wind 3 to 15 mph, with gusts as high as 25 mph.

    Wednesday

    Wed, Mar 18
    40°F
    Partly Sunny
    2 mph W
    Precipitation: 0%
    Partly sunny, with a high near 40. West wind 2 to 7 mph.

    Wednesday Night

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

    Thursday

    Thu, Mar 19
    52°F
    Mostly Cloudy
    6 mph S
    Precipitation: 3%
    Mostly cloudy, with a high near 52.

    Thursday Night

    Thu, Mar 19
    37°F
    Mostly Cloudy
    6 mph S
    Precipitation: 12%
    Mostly cloudy, with a low around 37.

    Friday

    Fri, Mar 20
    60°F
    Partly Sunny
    3 mph W
    Precipitation: 12%
    Partly sunny, with a high near 60.

    Friday Night

    Fri, Mar 20
    43°F
    Chance Light Rain
    8 mph SW
    Precipitation: 28%
    A chance of rain after 8pm. Mostly cloudy, with a low around 43. Chance of precipitation is 30%.

    Saturday

    Sat, Mar 21
    60°F
    Slight Chance Light Rain
    8 mph W
    Precipitation: 22%
    A slight chance of rain. Mostly cloudy, with a high near 60.

    Saturday Night

    Sat, Mar 21
    42°F
    Slight Chance Light Rain
    13 mph SW
    Precipitation: 22%
    A slight chance of rain before 2am. Mostly cloudy, with a low around 42.

    Sunday

    Sun, Mar 22
    64°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 64.

    Sunday Night

    Sun, Mar 22
    37°F
    Slight Chance Light Rain
    10 mph NW
    Precipitation: 21%
    A slight chance of rain. Mostly cloudy, with a low around 37.

    Monday

    Mon, Mar 23
    54°F
    Slight Chance Light Rain then Mostly Sunny
    13 mph NW
    Precipitation: 17%
    A slight chance of rain before 8am. Mostly sunny, with a high near 54.

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