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      Small Craft Advisory
      until 6:00 AM EDT
      Elev 453 ft, 38.839 °N 77.305 °W

      Fairfax, VA

      Ardmore Station72°
      Updated: 1:01 AM EDT on September 21, 2026 (GMT -4)
      5 minutes ago
      74°
      71°
      72
      Feels Like 73
      Partly Cloudy
      N
      6
      Lower temperature is expected today
      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
        Sun 09/20
        Low 66°f
         3% Precip. / 0 in
        Partly cloudy skies. Low 66F. Winds NNE at 5 to 10 mph.
        Tomorrow
        Mon 09/21
        High 71°f
         52% Precip. / 0.11 in
        Considerable cloudiness. Occasional rain showers in the afternoon. High 71F. Winds NE at 5 to 10 mph. Chance of rain 50%.
        Tomorrow night
        Mon 09/21
        Low 61°f
         78% Precip. / 0.23 in
        Rain showers in the evening will evolve into a more steady rain overnight. Low 61F. Winds ENE at 5 to 10 mph. Chance of rain 80%. Rainfall near a quarter of an inch.
        Hourly Forecast
        Now
        73°
        2AM
        72°
        3AM
        71°
        4AM
        70°
        5AM
        68°
        6AM
        67°
        6:56AM
        Sunrise
        7AM
        66°
        8AM
        67°
        9AM
        68°
        10AM
        69°
        11AM
        70°
        12PM
        71°
        1PM
        71°
        2PM
        39%
        70°
        3PM
        39%
        70°
        4PM
        44%
        68°
        5PM
        52%
        67°
        6PM
        32%
        67°
        7PM
        33%
        66°
        7:07PM
        Sunset
        8PM
        35%
        64°
        9PM
        57%
        63°
        10PM
        48%
        63°
        11PM
        54%
        63°
        12AM
        33%
        63°
        1AM
        60%
        63°
        Precipitation
        60%
        Pollen
        Ragweed Pollen
        High
        Air Quality
        53
        Moderate
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 29.94 in
        2. Visibility 10 miles
        3. Clouds Partly Cloudy
        4. Dew Point67°F
        5. Humidity 83%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KDAA Station History
        Almanac for September 21, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 74°F 77°F 92°F 1998
        4. Low 71°F 56°F 33°F 1962
        5. Rain/Snow Depth
        6. Precipitation 0 in 3.1 in -
        7. Snow 0 in 0 in -
        Almanac for September 22, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 81°F 77°F 94°F
        4. Low 71°F 56°F 35°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:56 AM 7:07 PM
        3. Civil Twilight 6:29 AM 7:34 PM
        4. Nautical Twilight 5:58 AM 8:05PM
        5. Astronomical Twilight 5:26 AM 8:36 PM
        1. Length of Visible Light 13h 4m
        2. Length of Day 12h 11m
        3. Tomorrow will be 2 minutes 30 seconds shorter
        1. Moon 4:41 PM 1:29 AM
        2. Waxing Gibbous77% 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
        Precipitation
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