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      Small Craft Advisory
      until 6:00 AM EDT
      Elev 371 ft, 38.931 °N 77.402 °W

      Floris, VA

      Herndon Station61°
      Updated: 7:54 PM EDT on September 23, 2026 (GMT -4)
      2 minutes ago
      65°
      54°
      61
      Feels Like 61
      Mostly Cloudy
      N
      8
      Gusts 16 mph
      Similar temperature is expected tomorrow
      Wundermap
      50
      50
      575
      90
      50
      7
      0 mph
      50
      50
      50
      50
      50
      50
      Radar · Now
        Hyper-local data from Weather Underground's network of
        400,000+ personal weather stations worldwide
        Tonight
        Wed 09/23
        Low 50°f
         4% Precip. / 0 in
        Partly cloudy this evening, then becoming cloudy after midnight. Low near 50F. Winds NE at 5 to 10 mph.
        Tomorrow
        Thu 09/24
        High 65°f
         4% Precip. / 0 in
        Cloudy skies. High near 65F. Winds NNE at 10 to 15 mph.
        Tomorrow night
        Thu 09/24
        Low 47°f
         3% Precip. / 0 in
        Partly cloudy. Low 47F. Winds N at 5 to 10 mph.
        Hourly Forecast
        Now
        61°
        8PM
        61°
        9PM
        60°
        10PM
        59°
        11PM
        57°
        12AM
        56°
        1AM
        55°
        2AM
        54°
        3AM
        53°
        4AM
        52°
        5AM
        52°
        6AM
        51°
        6:59AM
        Sunrise
        7AM
        51°
        8AM
        52°
        9AM
        55°
        10AM
        57°
        11AM
        59°
        12PM
        61°
        1PM
        62°
        2PM
        62°
        3PM
        63°
        4PM
        64°
        5PM
        64°
        6PM
        63°
        7PM
        61°
        Precipitation
        4%
        Pollen
        Ragweed Pollen
        High
        Air Quality
        15
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 30.36 in
        2. Visibility 10 miles
        3. Clouds Mostly Cloudy
        4. Dew Point52°F
        5. Humidity 74%
        6. Rainfall 0.36 in
        7. Snow Depth 0 in
         KIAD Station History
        Almanac for September 23, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 65°F 77°F 94°F 2019
        4. Low 54°F 55°F 33°F 1983
        5. Rain/Snow Depth
        6. Precipitation 0 in 3 in -
        7. Snow 0 in 0 in -
        Almanac for September 24, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 65°F 76°F 97°F
        4. Low 54°F 55°F 30°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:58 AM 7:04 PM
        3. Civil Twilight 6:31 AM 7:31 PM
        4. Nautical Twilight 6:00 AM 8:02PM
        5. Astronomical Twilight 5:28 AM 8:34 PM
        1. Length of Visible Light 12h 59m
        2. Length of Day 12h 6m
        3. Tomorrow will be 2 minutes 31 seconds shorter
        1. Moon 5:38 PM 3:36 AM
        2. Waxing Gibbous91% of the Moon is Illuminated
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Oct 18
        Waxing Half First Qtr
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