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      Elev 710 ft, 38.931 °N 77.241 °W

      Tysons, VA

      Tysons Corner Station78°
      Updated: 4:09 PM EDT on September 17, 2026 (GMT -4)
      8 minutes ago
      88°
      67°
      78
      Feels Like 79
      Partly Cloudy
      N
      3
      Similar 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
        Thu 09/17
        Low 71°f
         72% Precip. / 0.01 in
        Thunderstorms this evening, then skies turning partly cloudy after midnight. Low 71F. Winds light and variable. Chance of rain 70%.
        Tomorrow
        Fri 09/18
        High 84°f
         15% Precip. / 0 in
        Some sun in the morning with increasing clouds during the afternoon. A stray shower or thunderstorm is possible. High 84F. Winds N at 5 to 10 mph.
        Tomorrow night
        Fri 09/18
        Low 64°f
         3% Precip. / 0 in
        Partly cloudy in the evening with more clouds for later at night. Low 64F. Winds NNE at 5 to 10 mph.
        Hourly Forecast
        Now
        77°
        5PM
        79°
        6PM
        79°
        7PM
        78°
        7:14PM
        Sunset
        8PM
        79°
        9PM
        59%
        77°
        10PM
        72%
        76°
        11PM
        75°
        12AM
        75°
        1AM
        75°
        2AM
        74°
        3AM
        74°
        4AM
        74°
        5AM
        74°
        6AM
        73°
        6:53AM
        Sunrise
        7AM
        72°
        8AM
        74°
        9AM
        76°
        10AM
        78°
        11AM
        80°
        12PM
        81°
        1PM
        82°
        2PM
        83°
        3PM
        84°
        4PM
        83°
        Precipitation
        72%
        Thunderstorms likely around 4:30 PM
        Pollen
        Ragweed Pollen
        High
        Air Quality
        56
        Moderate
        UV Index
        2
        Low
        Additional Conditions
        1. Pressure 30.12 in
        2. Visibility 10 miles
        3. Clouds Partly Cloudy
        4. Dew Point73°F
        5. Humidity 90%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KJPN Station History
        Almanac for September 17, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 88°F 79°F 97°F 1991
        4. Low 67°F 59°F 43°F 1990
        5. Rain/Snow Depth
        6. Precipitation 0.01 in 3.2 in -
        7. Snow 0 in 0 in -
        Almanac for September 18, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 84°F 79°F 94°F
        4. Low 67°F 59°F 35°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:52 AM 7:13 PM
        3. Civil Twilight 6:25 AM 7:40 PM
        4. Nautical Twilight 5:54 AM 8:11PM
        5. Astronomical Twilight 5:22 AM 8:43 PM
        1. Length of Visible Light 13h 15m
        2. Length of Day 12h 21m
        3. Tomorrow will be 2 minutes 30 seconds shorter
        1. Moon 1:43 PM 10:40 PM
        2. Waxing Crescent39% 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
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