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.

Fog/Mist

68°F

20°C

Humidity 96%
Wind Speed S 15 mph
Barometer 29.86 in (1011.2 mb)
Dewpoint 67°F (19°C)
Visibility 1.25 mi
Last update 23 Jun 10:53 am EDT
Extended Forecast for

Nantucket MA

  • Today

    Today: Showers and possibly a thunderstorm. High near 70. West wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 70 °F

    Showers

  • Tonight

    Tonight: Showers. Patchy fog after 11pm. Low around 62. North wind 7 to 9 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 62 °F

    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: A chance of showers, mainly before 7am. Mostly cloudy through mid morning, then gradual clearing, with a high near 70. North wind 8 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 70 °F

    Chance
    Showers then
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 64. West wind 6 to 9 mph.

    Low: 64 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 70. Light and variable wind becoming south 5 to 9 mph in the morning.

    High: 70 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 63. South wind around 7 mph.

    Low: 63 °F

    Partly Cloudy

  • Friday

    Friday: A chance of showers between 11am and noon. Partly sunny, with a high near 68. South wind 7 to 13 mph. Chance of precipitation is 30%.

    High: 68 °F

    Chance
    Showers then
    Partly Sunny

  • Friday Night

    Friday Night: A chance of showers after 9pm. Mostly cloudy, with a low around 65. Southwest wind 8 to 10 mph. Chance of precipitation is 50%.

    Low: 65 °F

    Chance
    Showers

  • Saturday

    Saturday: Showers likely, mainly before 2pm. Mostly cloudy, with a high near 70. Southwest wind 6 to 9 mph becoming south in the afternoon. Chance of precipitation is 60%.

    High: 70 °F

    Showers
    Likely

Detailed Forecast

Today
Showers and possibly a thunderstorm. High near 70. West wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers. Patchy fog after 11pm. Low around 62. North wind 7 to 9 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday
A chance of showers, mainly before 7am. Mostly cloudy through mid morning, then gradual clearing, with a high near 70. North wind 8 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Mostly clear, with a low around 64. West wind 6 to 9 mph.
Thursday
Sunny, with a high near 70. Light and variable wind becoming south 5 to 9 mph in the morning.
Thursday Night
Partly cloudy, with a low around 63. South wind around 7 mph.
Friday
A chance of showers between 11am and noon. Partly sunny, with a high near 68. South wind 7 to 13 mph. Chance of precipitation is 30%.
Friday Night
A chance of showers after 9pm. Mostly cloudy, with a low around 65. Southwest wind 8 to 10 mph. Chance of precipitation is 50%.
Saturday
Showers likely, mainly before 2pm. Mostly cloudy, with a high near 70. Southwest wind 6 to 9 mph becoming south in the afternoon. Chance of precipitation is 60%.
Saturday Night
A chance of showers before 4am. Mostly cloudy, with a low around 62. South wind around 6 mph becoming northwest after midnight. Chance of precipitation is 40%.
Sunday
Mostly sunny, with a high near 68. Northeast wind around 8 mph.
Sunday Night
Partly cloudy, with a low around 63. South wind around 6 mph becoming light and variable.
Monday
Mostly sunny, with a high near 70. North wind around 7 mph becoming south in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Nantucket MA
 41.28°N 70.12°W (Elev. 49 ft)
Last Update:
8:54 am EDT Jun 23, 2026
Forecast Valid:
11am EDT Jun 23, 2026-6pm EDT Jun 29, 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