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      Small Craft Advisory
      until 11:00 PM EDT
      Elev 387 ft, 38.972 °N 77.390 °W

      Herndon, VA

      Herndon Heights Station62°
      Updated: 11:17 PM EDT on October 10, 2026 (GMT -4)
      10 minutes ago
      72°
      49°
      62
      Feels Like 62
      Showers in Vicinity
      N
      7
      Lower temperature is expected tomorrow
      Wundermap

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       Wundermap
      50
      50
      575
      90
      50
      7
      0 mph
      50
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      50
      Radar · Now
        Hyper-local data from Weather Underground's network of
        400,000+ personal weather stations worldwide
        Tonight
        Sat 10/10
        Low 60°f
         100% Precip. / 0.6 in
        Rain. Low near 60F. Winds E at 10 to 15 mph. Chance of rain 100%. Rainfall near a half an inch.
        Tomorrow
        Sun 10/11
        High 67°f
         100% Precip. / 0.8 in
        Rain likely. High 67F. Winds E at 10 to 15 mph. Chance of rain 100%. Rainfall near an inch. Localized flooding is possible.
        Tomorrow night
        Sun 10/11
        Low 61°f
         79% Precip. / 0.38 in
        Scattered thunderstorms in the evening, overcast overnight with occasional rain likely. Low 61F. Winds N at 5 to 10 mph. Chance of rain 80%.
        Hourly Forecast
        Now
        63°
        12AM
        69%
        63°
        1AM
        88%
        63°
        2AM
        98%
        62°
        3AM
        100%
        62°
        4AM
        100%
        61°
        5AM
        100%
        61°
        6AM
        98%
        62°
        7AM
        100%
        62°
        7:15AM
        Sunrise
        8AM
        99%
        62°
        9AM
        96%
        63°
        10AM
        96%
        63°
        11AM
        96%
        64°
        12PM
        95%
        65°
        1PM
        85%
        65°
        2PM
        79%
        65°
        3PM
        63%
        65°
        4PM
        46%
        66°
        5PM
        44%
        66°
        6PM
        45%
        66°
        6:36PM
        Sunset
        7PM
        48%
        66°
        8PM
        58%
        65°
        9PM
        53%
        65°
        10PM
        56%
        66°
        11PM
        46%
        66°
        Precipitation
        100%
        Rain likely to continue
        Pollen
        Ragweed Pollen
        Moderate
        Air Quality
        33
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 30.33 in
        2. Visibility 10 miles
        3. Clouds Cloudy
        4. Dew Point55°F
        5. Humidity 76%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KIAD Station History
        Almanac for October 10, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 72°F 70°F 87°F 2017
        4. Low 49°F 48°F 31°F 1978
        5. Rain/Snow Depth
        6. Precipitation 0.6 in 3.3 in -
        7. Snow 0 in 0 in -
        Almanac for October 11, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 67°F 70°F 86°F
        4. Low 60°F 47°F 28°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 7:14 AM 6:38 PM
        3. Civil Twilight 6:47 AM 7:04 PM
        4. Nautical Twilight 6:16 AM 7:35PM
        5. Astronomical Twilight 5:45 AM 8:06 PM
        1. Length of Visible Light 12h 17m
        2. Length of Day 11h 24m
        3. Tomorrow will be 2 minutes 28 seconds shorter
        1. Moon 7:13 AM 6:22 PM
        2. New0% of the Moon is Illuminated
        Oct 10
        New Moon
        Oct 18
        Waxing Half First Qtr
        Oct 26
        Full Moon
        Nov 1
        Waning Half Last Qtr
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