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.

A Few Clouds

72°F

22°C

Humidity 87%
Wind Speed S 10 mph
Barometer 29.78 in (1008.3 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 28 Jul 5:53 pm EDT
Extended Forecast for

Nantucket MA

  • Tonight

    Tonight: Partly cloudy, with a low around 66. Southeast wind 8 to 10 mph.

    Low: 66 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3pm. Increasing clouds, with a high near 77. Southeast wind 14 to 17 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 1am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 65. East wind 8 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 65 °F

    Heavy Rain

  • Thursday

    Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 11am. Partly sunny, with a high near 76. East wind 8 to 11 mph becoming southwest in the morning. Chance of precipitation is 30%.

    High: 76 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, mainly before 3am. Mostly cloudy, with a low around 65. North wind around 10 mph. Chance of precipitation is 40%.

    Low: 65 °F

    Chance
    Showers

  • Friday

    Friday: Partly sunny, with a high near 76. North wind 11 to 13 mph.

    High: 76 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 64. Northwest wind 6 to 8 mph.

    Low: 64 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 74. North wind 6 to 9 mph becoming southwest in the afternoon.

    High: 74 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 65. Southwest wind around 7 mph.

    Low: 65 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 66. Southeast wind 8 to 10 mph.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3pm. Increasing clouds, with a high near 77. Southeast wind 14 to 17 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and thunderstorms likely, mainly before 1am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 65. East wind 8 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 11am. Partly sunny, with a high near 76. East wind 8 to 11 mph becoming southwest in the morning. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms, mainly before 3am. Mostly cloudy, with a low around 65. North wind around 10 mph. Chance of precipitation is 40%.
Friday
Partly sunny, with a high near 76. North wind 11 to 13 mph.
Friday Night
Partly cloudy, with a low around 64. Northwest wind 6 to 8 mph.
Saturday
Mostly sunny, with a high near 74. North wind 6 to 9 mph becoming southwest in the afternoon.
Saturday Night
Mostly cloudy, with a low around 65. Southwest wind around 7 mph.
Sunday
Partly sunny, with a high near 75. South wind 7 to 11 mph.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 66. South wind around 9 mph. Chance of precipitation is 30%.
Monday
A chance of showers. Partly sunny, with a high near 76. Southwest wind 8 to 11 mph. Chance of precipitation is 30%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 66. Southwest wind around 8 mph. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 76. Northeast wind 8 to 10 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Nantucket MA
 41.28°N 70.12°W (Elev. 49 ft)
Last Update:
3:27 pm EDT Jul 28, 2026
Forecast Valid:
6pm EDT Jul 28, 2026-6pm EDT Aug 4, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation