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

57°F

14°C

Humidity 96%
Wind Speed Calm
Barometer 30.14 in (1020.7 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 16 Aug 5:53 am EDT
Extended Forecast for

Nantucket MA

  • Today

    Today: Sunny, with a high near 76. Light and variable wind becoming south 6 to 11 mph in the morning.

    High: 76 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 68. South wind around 9 mph.

    Low: 68 °F

    Increasing
    Clouds

  • Monday

    Monday: Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 77. Southeast wind 14 to 17 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 77 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A chance of showers, mainly before 1am. Patchy fog before 9pm. Otherwise, mostly cloudy, with a low around 69. East wind around 9 mph becoming north after midnight. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 69 °F

    Chance
    Showers and
    Patchy Fog

  • Tuesday

    Tuesday: Partly sunny, with a high near 76. North wind 11 to 13 mph.

    High: 76 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 68. North wind around 5 mph becoming light and variable in the evening.

    Low: 68 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 77. Southwest wind 5 to 10 mph.

    High: 77 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 70. Southwest wind 8 to 10 mph.

    Low: 70 °F

    Mostly Clear

  • Thursday

    Thursday: A chance of showers after 10am. Partly sunny, with a high near 78. Southwest wind 8 to 10 mph becoming northeast in the afternoon. Chance of precipitation is 40%.

    High: 78 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 76. Light and variable wind becoming south 6 to 11 mph in the morning.
Tonight
Increasing clouds, with a low around 68. South wind around 9 mph.
Monday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 77. Southeast wind 14 to 17 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Monday Night
A chance of showers, mainly before 1am. Patchy fog before 9pm. Otherwise, mostly cloudy, with a low around 69. East wind around 9 mph becoming north after midnight. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
Partly sunny, with a high near 76. North wind 11 to 13 mph.
Tuesday Night
Partly cloudy, with a low around 68. North wind around 5 mph becoming light and variable in the evening.
Wednesday
Sunny, with a high near 77. Southwest wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 70. Southwest wind 8 to 10 mph.
Thursday
A chance of showers after 10am. Partly sunny, with a high near 78. Southwest wind 8 to 10 mph becoming northeast in the afternoon. Chance of precipitation is 40%.
Thursday Night
A chance of showers before 2am. Mostly cloudy, with a low around 67. West wind around 8 mph becoming north after midnight. Chance of precipitation is 40%.
Friday
Mostly sunny, with a high near 75. Northeast wind around 11 mph.
Friday Night
Partly cloudy, with a low around 66. East wind 6 to 8 mph.
Saturday
A chance of showers. Partly sunny, with a high near 76. East wind 9 to 11 mph. Chance of precipitation is 30%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Nantucket MA
 41.28°N 70.12°W (Elev. 49 ft)
Last Update:
3:42 am EDT Aug 16, 2026
Forecast Valid:
6am EDT Aug 16, 2026-6pm EDT Aug 22, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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