National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Nantucket, Nantucket Memorial Airport (KACK)

Lat: 41.25°NLon: 70.06°WElev: 46ft.

Fair

64°F

18°C

Humidity 81%
Wind Speed NW 6 mph
Barometer 29.94 in (1013.9 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 21 Jun 9:53 pm EDT
Extended Forecast for

Nantucket MA

  • Tonight

    Tonight: Partly cloudy, with a low around 64. West wind 5 to 9 mph.

    Low: 64 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 75. Calm wind becoming south 5 to 9 mph in the afternoon.

    High: 75 °F

    Partly Sunny

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 65. South wind 9 to 13 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm before 2pm, then showers likely. High near 79. South wind 10 to 14 mph becoming west in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 79 °F

    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers, mainly before 10pm. Partly cloudy, with a low around 64. Northwest wind around 6 mph. Chance of precipitation is 30%.

    Low: 64 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Sunny, with a high near 80. Northwest wind around 7 mph becoming southwest in the afternoon.

    High: 80 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 65. West wind around 8 mph.

    Low: 65 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 78. Southwest wind 5 to 9 mph.

    High: 78 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 65. South wind around 8 mph.

    Low: 65 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 64. West wind 5 to 9 mph.
Monday
Partly sunny, with a high near 75. Calm wind becoming south 5 to 9 mph in the afternoon.
Monday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 65. South wind 9 to 13 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
Showers and possibly a thunderstorm before 2pm, then showers likely. High near 79. South wind 10 to 14 mph becoming west in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday Night
A chance of showers, mainly before 10pm. Partly cloudy, with a low around 64. Northwest wind around 6 mph. Chance of precipitation is 30%.
Wednesday
Sunny, with a high near 80. Northwest wind around 7 mph becoming southwest in the afternoon.
Wednesday Night
Mostly clear, with a low around 65. West wind around 8 mph.
Thursday
Sunny, with a high near 78. Southwest wind 5 to 9 mph.
Thursday Night
Partly cloudy, with a low around 65. South wind around 8 mph.
Friday
A chance of showers between 11am and noon. Partly sunny, with a high near 78. South wind 8 to 11 mph. Chance of precipitation is 30%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 66. Southwest wind 7 to 9 mph. Chance of precipitation is 40%.
Saturday
A chance of showers. Partly sunny, with a high near 80. Southwest wind 7 to 10 mph. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 66. West wind 7 to 10 mph.
Sunday
Mostly sunny, with a high near 80. Northwest wind around 8 mph becoming southwest in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
Nantucket MA
 41.28°N 70.12°W (Elev. 49 ft)
Last Update:
3:22 pm EDT Jun 21, 2026
Forecast Valid:
10pm EDT Jun 21, 2026-6pm EDT Jun 28, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation