National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Nantucket, Nantucket Memorial Airport (KACK)

Lat: 41.25°NLon: 70.06°WElev: 46ft.

Overcast

69°F

21°C

Humidity 66%
Wind Speed N 15 mph
Barometer 30.05 in (1017.7 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 23 Jul 9:53 am EDT
Extended Forecast for

Nantucket MA

High Surf Advisory July 23, 10:18am until July 23, 08:00pm
Click here for hazard details and duration
High Surf Advisory
  •  
    High Surf Advisory July 23, 10:18am until July 23, 08:00pm

    NOW until 8:00pm Thu

    High Surf Advisory

  • Today

    High: 77 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 60. East wind around 5 mph becoming calm in the evening.

    Low: 60 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 78. Northeast wind 5 to 8 mph.

    High: 78 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 61. East wind 3 to 8 mph.

    Low: 61 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 77. Northeast wind 7 to 11 mph.

    High: 77 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 64. Northeast wind 5 to 7 mph.

    Low: 64 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 76. Northeast wind 8 to 11 mph.

    High: 76 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 64. Northeast wind 6 to 9 mph.

    Low: 64 °F

    Mostly Cloudy

Detailed Forecast

Today
Partly sunny, with a high near 77. North wind 10 to 13 mph.
Tonight
Mostly clear, with a low around 60. East wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 78. Northeast wind 5 to 8 mph.
Friday Night
Partly cloudy, with a low around 61. East wind 3 to 8 mph.
Saturday
Sunny, with a high near 77. Northeast wind 7 to 11 mph.
Saturday Night
Partly cloudy, with a low around 64. Northeast wind 5 to 7 mph.
Sunday
Mostly sunny, with a high near 76. Northeast wind 8 to 11 mph.
Sunday Night
Mostly cloudy, with a low around 64. Northeast wind 6 to 9 mph.
Monday
Mostly sunny, with a high near 75. Northeast wind 9 to 11 mph becoming southeast in the afternoon.
Monday Night
Partly cloudy, with a low around 66. Southwest wind around 7 mph.
Tuesday
A chance of showers. Partly sunny, with a high near 76. South wind 9 to 15 mph. Chance of precipitation is 30%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 67. South wind around 11 mph. Chance of precipitation is 50%.
Wednesday
A chance of showers. Partly sunny, with a high near 77. Southeast wind around 14 mph. Chance of precipitation is 40%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Nantucket MA
 41.28°N 70.09°W (Elev. 3 ft)
Last Update:
8:20 am EDT Jul 23, 2026
Forecast Valid:
10am EDT Jul 23, 2026-6pm EDT Jul 29, 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