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      Elev 279 ft, 39.009 °N 77.421 °W

      Sterling, VA

      Washington Dulles Intl Airport Station80°
      Updated: 6:18 PM EDT on September 20, 2026 (GMT -4)
      3 minutes ago
      83°
      69°
      80
      Feels Like 83
      Mostly Cloudy
      N
      4
      Lower temperature is expected tomorrow
      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 65°f
         22% Precip. / 0 in
        Considerable clouds this evening. Some decrease in clouds late. Slight chance of a rain shower. Low near 65F. Winds NNW at 5 to 10 mph.
        Tomorrow
        Mon 09/21
        High 68°f
         53% Precip. / 0.09 in
        Cloudy in the morning, then off and on rain showers during the afternoon hours. High 68F. Winds NE at 5 to 10 mph. Chance of rain 50%.
        Tomorrow night
        Mon 09/21
        Low 60°f
         77% Precip. / 0.25 in
        Cloudy with periods of rain. Low near 60F. Winds ENE at 5 to 10 mph. Chance of rain 80%. Rainfall around a quarter of an inch.
        Hourly Forecast
        Now
        79°
        7PM
        78°
        7:10PM
        Sunset
        8PM
        76°
        9PM
        75°
        10PM
        74°
        11PM
        74°
        12AM
        72°
        1AM
        72°
        2AM
        71°
        3AM
        70°
        4AM
        70°
        5AM
        68°
        6AM
        67°
        6:56AM
        Sunrise
        7AM
        66°
        8AM
        67°
        9AM
        67°
        10AM
        68°
        11AM
        67°
        12PM
        68°
        1PM
        53%
        68°
        2PM
        44%
        66°
        3PM
        66°
        4PM
        46%
        66°
        5PM
        40%
        66°
        6PM
        65°
        Precipitation
        53%
        Pollen
        Ragweed Pollen
        High
        Air Quality
        52
        Moderate
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 29.87 in
        2. Visibility 10 miles
        3. Clouds Mostly Cloudy
        4. Dew Point71°F
        5. Humidity 77%
        6. Rainfall 0.1 in
        7. Snow Depth 0 in
         KIAD Station History
        Almanac for September 20, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 83°F 78°F 92°F 1983
        4. Low 69°F 56°F 39°F 2020
        5. Rain/Snow Depth
        6. Precipitation 0 in - in -
        7. Snow 0 in - in -
        Almanac for September 21, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 73°F 77°F 90°F
        4. Low 69°F 56°F 39°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:55 AM 7:09 PM
        3. Civil Twilight 6:29 AM 7:36 PM
        4. Nautical Twilight 5:57 AM 8:07PM
        5. Astronomical Twilight 5:25 AM 8:39 PM
        1. Length of Visible Light 13h 7m
        2. Length of Day 12h 14m
        3. Tomorrow will be 2 minutes 30 seconds shorter
        1. Moon 4:08 PM 12:28 AM
        2. Waxing Gibbous68% 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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