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

49°F

9°C

Humidity 80%
Wind Speed SW 15 mph
Barometer 30.13 in (1020.4 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 12 May 10:53 pm EDT
Extended Forecast for

Nantucket MA

  • Tonight

    Tonight: Mostly clear, with a low around 50. Southwest wind around 10 mph, with gusts as high as 25 mph.

    Low: 50 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly cloudy, then becoming sunny during the afternoon, with a high near 63. South wind 9 to 16 mph.

    High: 63 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 53. South wind 11 to 13 mph.

    Low: 53 °F

    Mostly Cloudy

  • Thursday

    Thursday: Showers, with thunderstorms also possible after 2pm. High near 64. Southeast wind 11 to 14 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 64 °F

    Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 2am, then showers likely. Low around 50. East wind 5 to 8 mph. Chance of precipitation is 80%.

    Low: 50 °F

    Showers

  • Friday

    Friday: A chance of showers, mainly before 4pm. Mostly cloudy, with a high near 62. Northeast wind 6 to 11 mph. Chance of precipitation is 40%.

    High: 62 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 50. North wind around 9 mph.

    Low: 50 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 65. Southwest wind 9 to 15 mph.

    High: 65 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 54. Southwest wind 13 to 15 mph.

    Low: 54 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 50. Southwest wind around 10 mph, with gusts as high as 25 mph.
Wednesday
Mostly cloudy, then becoming sunny during the afternoon, with a high near 63. South wind 9 to 16 mph.
Wednesday Night
Mostly cloudy, with a low around 53. South wind 11 to 13 mph.
Thursday
Showers, with thunderstorms also possible after 2pm. High near 64. Southeast wind 11 to 14 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers and possibly a thunderstorm before 2am, then showers likely. Low around 50. East wind 5 to 8 mph. Chance of precipitation is 80%.
Friday
A chance of showers, mainly before 4pm. Mostly cloudy, with a high near 62. Northeast wind 6 to 11 mph. Chance of precipitation is 40%.
Friday Night
Mostly cloudy, with a low around 50. North wind around 9 mph.
Saturday
Sunny, with a high near 65. Southwest wind 9 to 15 mph.
Saturday Night
Mostly clear, with a low around 54. Southwest wind 13 to 15 mph.
Sunday
Sunny, with a high near 67. West wind 10 to 14 mph.
Sunday Night
Mostly clear, with a low around 53. West wind 6 to 9 mph becoming north after midnight.
Monday
Mostly sunny, with a high near 64. East wind 5 to 8 mph becoming south in the afternoon.
Monday Night
Partly cloudy, with a low around 53. South wind around 9 mph.
Tuesday
Partly sunny, with a high near 66. Southwest wind 11 to 16 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Nantucket MA
 41.28°N 70.12°W (Elev. 49 ft)
Last Update:
7:08 pm EDT May 12, 2026
Forecast Valid:
11pm EDT May 12, 2026-6pm EDT May 19, 2026
 
Forecast Discussion
 
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Additional Resources

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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