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      Small Craft Advisory
      until 12:00 PM EDT
      Elev 203 ft, 41.355 °N 70.733 °W

      Chilmark, MA

      Chilmark Station70°
      Updated: 5:52 PM EDT on September 18, 2026 (GMT -4)
      6 minutes ago
      80°
      59°
      70
      Feels Like 71
      Fair
      N
      7
      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
        Fri 09/18
        Low 54°f
         15% Precip. / 0 in
        Partly cloudy skies this evening will become overcast overnight. Low 54F. Winds NE at 10 to 15 mph.
        Tomorrow
        Sat 09/19
        High 65°f
         1% Precip. / 0 in
        Partly cloudy. High around 65F. Winds NE at 10 to 15 mph.
        Tomorrow night
        Sat 09/19
        Low 50°f
         3% Precip. / 0 in
        Partly cloudy skies. Low near 50F. Winds ESE at 5 to 10 mph.
        Hourly Forecast
        Now
        71°
        6PM
        71°
        6:46PM
        Sunset
        7PM
        68°
        8PM
        66°
        9PM
        65°
        10PM
        64°
        11PM
        64°
        12AM
        62°
        1AM
        60°
        2AM
        59°
        3AM
        58°
        4AM
        58°
        5AM
        57°
        6AM
        56°
        6:27AM
        Sunrise
        7AM
        55°
        8AM
        59°
        9AM
        61°
        10AM
        62°
        11AM
        63°
        12PM
        64°
        1PM
        64°
        2PM
        64°
        3PM
        64°
        4PM
        63°
        5PM
        62°
        Precipitation
        14%
        Pollen
        None
        Air Quality
        37
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 30.02 in
        2. Visibility 10 miles
        3. Clouds Partly Cloudy
        4. Dew Point61°F
        5. Humidity 70%
        6. Rainfall 0.03 in
        7. Snow Depth 0 in
         KMVY Station History
        Almanac for September 18, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 80°F 73°F 84°F 1946
        4. Low 59°F 58°F 35°F 1959
        5. Rain/Snow Depth
        6. Precipitation 0 in 3.2 in -
        7. Snow 0 in 0 in -
        Almanac for September 19, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 64°F 73°F 81°F
        4. Low 59°F 58°F 35°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:26 AM 6:46 PM
        3. Civil Twilight 5:58 AM 7:14 PM
        4. Nautical Twilight 5:26 AM 7:47PM
        5. Astronomical Twilight 4:52 AM 8:20 PM
        1. Length of Visible Light 13h 15m
        2. Length of Day 12h 20m
        3. Tomorrow will be 2 minutes 43 seconds shorter
        1. Moon 2:21 PM 10:54 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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