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      Heat Advisory
      until 8:00 PM EDT
      Elev 269 ft, 37.747 °N 77.689 °W

      Rockville, VA

      Walnut Hill Station74°
      Updated: 12:41 AM EDT on September 3, 2026 (GMT -4)
      10 minutes ago
      80°
      75°
      74
      Feels Like 76
      Clear
      N
      0
      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
        Wed 09/02
        Low 72°f
         15% Precip. / 0 in
        Partly cloudy. Low 72F. Winds light and variable.
        Tomorrow
        Thu 09/03
        High 95°f
         24% Precip. / 0 in
        Generally sunny despite a few afternoon clouds. A stray shower or thunderstorm is possible. High near 95F. Winds light and variable.
        Tomorrow night
        Thu 09/03
        Low 72°f
         24% Precip. / 0 in
        A few clouds. Low 72F. Winds light and variable.
        Hourly Forecast
        Now
        76°
        1AM
        75°
        2AM
        75°
        3AM
        74°
        4AM
        74°
        5AM
        74°
        6AM
        73°
        6:42AM
        Sunrise
        7AM
        74°
        8AM
        75°
        9AM
        79°
        10AM
        84°
        11AM
        89°
        12PM
        92°
        1PM
        93°
        2PM
        93°
        3PM
        92°
        4PM
        93°
        5PM
        92°
        6PM
        87°
        7PM
        84°
        7:37PM
        Sunset
        8PM
        82°
        9PM
        81°
        10PM
        79°
        11PM
        77°
        12AM
        77°
        Precipitation
        24%
        Pollen
        Ragweed Pollen
        High
        Air Quality
        66
        Moderate
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 30.02 in
        2. Visibility 7 miles
        3. Clouds Partly Cloudy
        4. Dew Point73°F
        5. Humidity 92%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KOFP Station History
        Almanac for September 3, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 80°F 83°F 100°F 1980
        4. Low 75°F 62°F 46°F 2021
        5. Rain/Snow Depth
        6. Precipitation 0 in 3.6 in -
        7. Snow 0 in 0 in -
        Almanac for September 4, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 95°F 83°F 93°F
        4. Low 75°F 61°F 48°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:42 AM 7:36 PM
        3. Civil Twilight 6:15 AM 8:03 PM
        4. Nautical Twilight 5:44 AM 8:35PM
        5. Astronomical Twilight 5:11 AM 9:07 PM
        1. Length of Visible Light 13h 47m
        2. Length of Day 12h 54m
        3. Tomorrow will be 2 minutes 21 seconds shorter
        1. Moon 11:11 PM 1:48 PM
        2. Waning Gibbous52% of the Moon is Illuminated
        Sep 4
        Waning Half Last Qtr
        Sep 10
        New Moon
        Sep 18
        Waxing Half First Qtr
        Sep 26
        Full Moon
        Precipitation
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