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      Small Craft Advisory
      until 6:00 AM EDT
      Elev 256 ft, 38.882 °N 77.087 °W

      Arlington, VA

      Lyon Park Station69°
      Updated: 2:54 PM EDT on September 21, 2026 (GMT -4)
      8 minutes ago
      75°
      65°
      69
      Feels Like 69
      Showers in Vicinity
      N
      6
      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
        Today
        Mon 09/21
        High 70°f
         100% Precip. / 0.09 in
        Rain. High near 70F. Winds ENE at 5 to 10 mph. Chance of rain 100%.
        Tonight
        Mon 09/21
        Low 62°f
         95% Precip. / 0.27 in
        Cloudy with occasional rain late. Low 62F. Winds ENE at 5 to 10 mph. Chance of rain 100%. Rainfall near a quarter of an inch.
        Tomorrow
        Tue 09/22
        High 64°f55°f
         85% Precip. / 0.61 in
        Periods of rain. High 64F. Winds ENE at 10 to 15 mph. Chance of rain 90%. Rainfall near a half an inch.
        Hourly Forecast
        Now
        70°
        3PM
        91%
        70°
        4PM
        62%
        70°
        5PM
        83%
        70°
        6PM
        83%
        70°
        7PM
        69°
        7:06PM
        Sunset
        8PM
        68°
        9PM
        67°
        10PM
        67°
        11PM
        67°
        12AM
        51%
        66°
        1AM
        44%
        66°
        2AM
        40%
        66°
        3AM
        49%
        66°
        4AM
        87%
        65°
        5AM
        93%
        65°
        6AM
        96%
        65°
        6:56AM
        Sunrise
        7AM
        86%
        63°
        8AM
        81%
        63°
        9AM
        82%
        63°
        10AM
        55%
        63°
        11AM
        58%
        63°
        12PM
        63%
        63°
        1PM
        79%
        62°
        2PM
        84%
        61°
        Precipitation
        96%
        Rain continuing through 7 PM
        Pollen
        Ragweed Pollen
        High
        Air Quality
        25
        Good
        UV Index
        1
        Low
        Additional Conditions
        1. Pressure 30.04 in
        2. Visibility 9 miles
        3. Clouds Cloudy
        4. Dew Point62°F
        5. Humidity 76%
        6. Rainfall 0.01 in
        7. Snow Depth 0 in
         KJPN Station History
        Almanac for September 21, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 75°F 78°F 93°F 1998
        4. Low 65°F 57°F 31°F 1956
        5. Rain/Snow Depth
        6. Precipitation 0.37 in 3.1 in -
        7. Snow 0 in 0 in -
        Almanac for September 22, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 67°F 77°F 95°F
        4. Low 65°F 57°F 37°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:55 AM 7:06 PM
        3. Civil Twilight 6:28 AM 7:33 PM
        4. Nautical Twilight 5:57 AM 8:04PM
        5. Astronomical Twilight 5:25 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 1:28 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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