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      Elev 148 ft, 39.021 °N 76.499 °W

      Arnold, MD

      Hidden Hills Station83°
      Updated: 10:47 AM EDT on September 18, 2026 (GMT -4)
      3 minutes ago
      83°
      71°
      83
      Feels Like 88
      Partly Cloudy
      N
      11
      Gusts 19 mph
      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
        Fri 09/18
        High 83°f
         15% Precip. / 0 in
        Cloudy early with peeks of sunshine expected late. Slight chance of a rain shower. High 83F. Winds NNE at 10 to 15 mph.
        Tonight
        Fri 09/18
        Low 66°f
         20% Precip. / 0 in
        Partly cloudy early with increasing clouds overnight. Low 66F. Winds NNE at 5 to 10 mph.
        Tomorrow
        Sat 09/19
        High 77°f69°f
         15% Precip. / 0 in
        Sunshine and clouds mixed. High 77F. Winds ENE at 5 to 10 mph.
        Hourly Forecast
        Now
        83°
        11AM
        82°
        12PM
        83°
        1PM
        83°
        2PM
        81°
        3PM
        80°
        4PM
        81°
        5PM
        81°
        6PM
        80°
        7PM
        79°
        7:09PM
        Sunset
        8PM
        78°
        9PM
        76°
        10PM
        75°
        11PM
        74°
        12AM
        73°
        1AM
        72°
        2AM
        71°
        3AM
        71°
        4AM
        70°
        5AM
        69°
        6AM
        68°
        6:50AM
        Sunrise
        7AM
        67°
        8AM
        68°
        9AM
        69°
        10AM
        70°
        Precipitation
        20%
        Pollen
        Ragweed Pollen
        High
        Air Quality
        63
        Moderate
        UV Index
        4
        Moderate
        Additional Conditions
        1. Pressure 30.08 in
        2. Visibility 9 miles
        3. Clouds Partly Cloudy
        4. Dew Point70°F
        5. Humidity 67%
        6. Rainfall 0.04 in
        7. Snow Depth 0 in
         KANP Station History
        Almanac for September 18, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 83°F 80°F 91°F 1970
        4. Low 71°F 64°F 40°F 1959
        5. Rain/Snow Depth
        6. Precipitation 0 in - in -
        7. Snow 0 in - in -
        Almanac for September 19, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 77°F 79°F 91°F
        4. Low 71°F 64°F 43°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:50 AM 7:09 PM
        3. Civil Twilight 6:23 AM 7:36 PM
        4. Nautical Twilight 5:52 AM 8:07PM
        5. Astronomical Twilight 5:20 AM 8:39 PM
        1. Length of Visible Light 13h 12m
        2. Length of Day 12h 19m
        3. Tomorrow will be 2 minutes 32 seconds shorter
        1. Moon 2:35 PM 11:27 PM
        2. First Quarter49% 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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