My Profile
  1. Member Settings
  2. My Devices
  3. Sign Out
Log In
    Favorites
        More Settings
      Marine Weather Statement
      until 1:00 PM EDT
      Elev 123 ft, 38.802 °N 77.322 °W

      Fairfax Station, VA

      Fairfax Station76°
      Updated: 10:37 AM EDT on September 12, 2026 (GMT -4)
      9 minutes ago
      81°
      67°
      76
      Feels Like 77
      Mostly Cloudy
      N
      6
      Similar 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
        Today
        Sat 09/12
        High 81°f
         24% Precip. / 0 in
        Some early morning breaks in the overcast, otherwise cloudy. A stray shower or thunderstorm is possible. High 81F. Winds SE at 5 to 10 mph.
        Tonight
        Sat 09/12
        Low 70°f
         68% Precip. / 0.34 in
        Showers and thundershowers this evening giving way to periods of light rain late. Low near 70F. Winds SE at 5 to 10 mph. Chance of rain 70%. Locally heavy rainfall possible.
        Tomorrow
        Sun 09/13
        High 87°f69°f
         24% Precip. / 0 in
        Cloudy skies early, followed by partial clearing. A stray shower or thunderstorm is possible. High 87F. Winds WNW at 5 to 10 mph.
        Hourly Forecast
        Now
        74°
        11AM
        75°
        12PM
        77°
        1PM
        78°
        2PM
        80°
        3PM
        80°
        4PM
        80°
        5PM
        79°
        6PM
        32%
        78°
        7PM
        45%
        77°
        7:22PM
        Sunset
        8PM
        69%
        75°
        9PM
        56%
        73°
        10PM
        57%
        73°
        11PM
        55%
        73°
        12AM
        58%
        72°
        1AM
        37%
        72°
        2AM
        37%
        72°
        3AM
        57%
        72°
        4AM
        67%
        72°
        5AM
        67%
        72°
        6AM
        53%
        71°
        6:48AM
        Sunrise
        7AM
        71°
        8AM
        32%
        72°
        9AM
        75°
        10AM
        77°
        Precipitation
        69%
        Pollen
        Ragweed Pollen
        High
        Air Quality
        51
        Moderate
        UV Index
        4
        Moderate
        Additional Conditions
        1. Pressure 30.07 in
        2. Visibility 10 miles
        3. Clouds Mostly Cloudy
        4. Dew Point68°F
        5. Humidity 79%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KDAA Station History
        Almanac for September 12, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 81°F 82°F 93°F 1983
        4. Low 67°F 57°F 39°F 1967
        5. Rain/Snow Depth
        6. Precipitation 0.34 in 0.1 in -
        7. Snow 0 in - in -
        Almanac for September 13, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 87°F 82°F 93°F
        4. Low 67°F 57°F 43°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:48 AM 7:22 PM
        3. Civil Twilight 6:21 AM 7:48 PM
        4. Nautical Twilight 5:49 AM 8:20PM
        5. Astronomical Twilight 5:17 AM 8:52 PM
        1. Length of Visible Light 13h 27m
        2. Length of Day 12h 34m
        3. Tomorrow will be 2 minutes 29 seconds shorter
        1. Moon 8:22 AM 7:56 PM
        2. Waxing Crescent2% of the Moon is Illuminated
        Sep 18
        Waxing Half First Qtr
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Precipitation
        Loading…
        Health
        Loading…
        Weather Alerts
        Loading…
        Our AppsAbout UsContactCareersWeather Data APIs
        PWS NetworkWundermap
        Terms of UsePrivacy PolicyCookie NoticeAccessibility StatementAdChoicesData Vendors
        essentialaccessibility.com
        We recognize our responsibility to use data and technology for good. We may use or share your data with our data vendors. Take control of your data.
        Review All Privacy and Ad Settings
        Choose how my information is shared
        Data Rights
        The Weather Company The Weather Channel Weather Underground Storm Radar
        © The Weather Company, LLC 2026
        Glossary