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.

Overcast

67°F

19°C

Humidity 91%
Wind Speed NW 10 mph
Barometer 29.86 in (1011.2 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 31 Jul 2:53 am EDT
Extended Forecast for

Nantucket MA

  • Overnight

    Overnight: Mostly cloudy, with a low around 63. North wind around 14 mph.

    Low: 63 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 76. Northwest wind around 8 mph becoming west in the afternoon.

    High: 76 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Patchy fog after 10pm. Otherwise, increasing clouds, with a low around 66. Southwest wind around 7 mph.

    Low: 66 °F

    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 77. Southwest wind 6 to 11 mph.

    High: 77 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 67. South wind around 8 mph.

    Low: 67 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 78. South wind 7 to 11 mph.

    High: 78 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of showers after midnight. Mostly cloudy, with a low around 68. South wind around 10 mph. Chance of precipitation is 40%.

    Low: 68 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday

    Monday: A chance of showers. Partly sunny, with a high near 77. Southwest wind 13 to 16 mph. Chance of precipitation is 50%.

    High: 77 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers. Mostly cloudy, with a low around 67. Southwest wind 9 to 14 mph. Chance of precipitation is 40%.

    Low: 67 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 63. North wind around 14 mph.
Friday
Mostly sunny, with a high near 76. Northwest wind around 8 mph becoming west in the afternoon.
Friday Night
Patchy fog after 10pm. Otherwise, increasing clouds, with a low around 66. Southwest wind around 7 mph.
Saturday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 77. Southwest wind 6 to 11 mph.
Saturday Night
Mostly cloudy, with a low around 67. South wind around 8 mph.
Sunday
Partly sunny, with a high near 78. South wind 7 to 11 mph.
Sunday Night
A chance of showers after midnight. Mostly cloudy, with a low around 68. South wind around 10 mph. Chance of precipitation is 40%.
Monday
A chance of showers. Partly sunny, with a high near 77. Southwest wind 13 to 16 mph. Chance of precipitation is 50%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 67. Southwest wind 9 to 14 mph. Chance of precipitation is 40%.
Tuesday
Mostly sunny, with a high near 77. Northwest wind 8 to 10 mph becoming southwest in the afternoon.
Tuesday Night
Partly cloudy, with a low around 67. South wind 6 to 9 mph.
Wednesday
Mostly sunny, with a high near 77. South wind 6 to 11 mph.
Wednesday Night
Partly cloudy, with a low around 67. Southwest wind 8 to 10 mph.
Thursday
Mostly sunny, with a high near 77. Southwest wind 8 to 13 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Nantucket MA
 41.28°N 70.12°W (Elev. 49 ft)
Last Update:
2:29 pm EDT Jul 30, 2026
Forecast Valid:
3am EDT Jul 31, 2026-6pm EDT Aug 6, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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