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.

Mostly Cloudy

70°F

21°C

Humidity 100%
Wind Speed SW 7 mph
Barometer 30.08 in (1018.4 mb)
Dewpoint 70°F (21°C)
Visibility 8.00 mi
Last update 15 Jul 8:53 pm EDT
Extended Forecast for

Nantucket MA

  • Tonight

    Tonight: Patchy fog. Otherwise, cloudy, with a low around 69. Southwest wind around 6 mph.

    Low: 69 °F

    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 11am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 82. Southwest wind 6 to 10 mph.

    High: 82 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 72. Southwest wind around 8 mph.

    Low: 72 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: A slight chance of showers and thunderstorms before 11am, then a slight chance of showers between 11am and 4pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 81. Southwest wind 10 to 15 mph. Chance of precipitation is 20%.

    High: 81 °F

    Slight Chance
    T-storms and
    Patchy Fog

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers. Partly cloudy, with a low around 71. Southwest wind 10 to 13 mph. Chance of precipitation is 30%.

    Low: 71 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Friday

    Friday: Sunny, with a high near 82. West wind around 11 mph becoming north in the afternoon.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 66. North wind around 7 mph.

    Low: 66 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 77. Northeast wind around 9 mph.

    High: 77 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 66. South wind around 6 mph.

    Low: 66 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog. Otherwise, cloudy, with a low around 69. Southwest wind around 6 mph.
Wednesday
Patchy fog before 11am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 82. Southwest wind 6 to 10 mph.
Wednesday Night
Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 72. Southwest wind around 8 mph.
Thursday
A slight chance of showers and thunderstorms before 11am, then a slight chance of showers between 11am and 4pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 81. Southwest wind 10 to 15 mph. Chance of precipitation is 20%.
Thursday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Partly cloudy, with a low around 71. Southwest wind 10 to 13 mph. Chance of precipitation is 30%.
Friday
Sunny, with a high near 82. West wind around 11 mph becoming north in the afternoon.
Friday Night
Partly cloudy, with a low around 66. North wind around 7 mph.
Saturday
Sunny, with a high near 77. Northeast wind around 9 mph.
Saturday Night
Partly cloudy, with a low around 66. South wind around 6 mph.
Sunday
A chance of showers after 2pm. Partly sunny, with a high near 78. South wind 7 to 11 mph. Chance of precipitation is 30%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 67. Southwest wind around 9 mph. Chance of precipitation is 40%.
Monday
A chance of showers. Mostly sunny, with a high near 79. North wind around 10 mph. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 66. Northeast wind around 6 mph becoming northwest after midnight.
Tuesday
Mostly sunny, with a high near 76. Northeast wind around 9 mph becoming east 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:
3:27 pm EDT Jul 15, 2025
Forecast Valid:
9pm EDT Jul 15, 2025-6pm EDT Jul 22, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation