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.

Light Rain

69°F

21°C

Humidity 93%
Wind Speed NE 9 mph
Barometer 29.99 in (1015.6 mb)
Dewpoint 67°F (19°C)
Visibility 9.00 mi
Last update 22 Aug 4:53 pm EDT
Extended Forecast for

Nantucket MA

  • This Afternoon

    This Afternoon: Patchy drizzle with a slight chance of showers. Cloudy, with a high near 74. North wind around 8 mph. Chance of precipitation is 20%.

    High: 74 °F

    Patchy
    Drizzle

  • Tonight

    Tonight: Showers likely, with thunderstorms also possible after 5am. Patchy fog after 9pm. Otherwise, cloudy, with a low around 64. North wind around 6 mph becoming light and variable. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Showers
    Likely and
    Patchy Fog

  • Sunday

    Sunday: Showers and thunderstorms likely before noon, then a slight chance of showers and thunderstorms after 5pm. Patchy fog before 2pm. Otherwise, mostly cloudy, with a high near 76. South wind 8 to 11 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Showers
    Likely and
    Patchy Fog
    then Patchy
    Fog

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, mainly between 2am and 3am. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 67. South wind 8 to 11 mph. Chance of precipitation is 50%.

    Low: 67 °F

    Chance
    Showers and
    Patchy Fog

  • Monday

    Monday: Sunny, with a high near 77. Southwest wind 7 to 11 mph.

    High: 77 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 66. Southwest wind 7 to 9 mph.

    Low: 66 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 76. Southwest wind 9 to 15 mph.

    High: 76 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 66. West wind 9 to 14 mph.

    Low: 66 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 75. Southwest wind 8 to 11 mph.

    High: 75 °F

    Sunny

Detailed Forecast

This Afternoon
Patchy drizzle with a slight chance of showers. Cloudy, with a high near 74. North wind around 8 mph. Chance of precipitation is 20%.
Tonight
Showers likely, with thunderstorms also possible after 5am. Patchy fog after 9pm. Otherwise, cloudy, with a low around 64. North wind around 6 mph becoming light and variable. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers and thunderstorms likely before noon, then a slight chance of showers and thunderstorms after 5pm. Patchy fog before 2pm. Otherwise, mostly cloudy, with a high near 76. South wind 8 to 11 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers and thunderstorms, mainly between 2am and 3am. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 67. South wind 8 to 11 mph. Chance of precipitation is 50%.
Monday
Sunny, with a high near 77. Southwest wind 7 to 11 mph.
Monday Night
Mostly clear, with a low around 66. Southwest wind 7 to 9 mph.
Tuesday
Sunny, with a high near 76. Southwest wind 9 to 15 mph.
Tuesday Night
Mostly clear, with a low around 66. West wind 9 to 14 mph.
Wednesday
Sunny, with a high near 75. Southwest wind 8 to 11 mph.
Wednesday Night
Mostly clear, with a low around 68. Southwest wind 7 to 10 mph.
Thursday
Mostly sunny, with a high near 77. South wind 5 to 10 mph.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 67. Southeast wind 6 to 8 mph. Chance of precipitation is 30%.
Friday
A chance of showers. Partly sunny, with a high near 77. Southeast wind 7 to 11 mph. Chance of precipitation is 30%.
Friday Night
Mostly cloudy, with a low around 68. Southwest wind around 8 mph.
Saturday
Mostly sunny, with a high near 77.
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:
3:11 pm EDT Aug 22, 2026
Forecast Valid:
5pm EDT Aug 22, 2026-6pm EDT Aug 29, 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