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

66°F

19°C

Humidity 81%
Wind Speed W 15 G 23 mph
Barometer 29.57 in (1001.2 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 19 Jun 2:53 am EDT
Extended Forecast for

Nantucket MA

  • Overnight

    Overnight: Partly cloudy, with a low around 63. West wind around 13 mph.

    Low: 63 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Sunny through mid morning, then becoming mostly cloudy, with a high near 79. Southwest wind 14 to 17 mph.

    High: 79 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly clear, with a low around 65. Southwest wind 9 to 14 mph.

    Low: 65 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 81. West wind around 18 mph.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 64. West wind 8 to 11 mph.

    Low: 64 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 79. Southwest wind 7 to 10 mph.

    High: 79 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 65. Southwest wind 5 to 7 mph.

    Low: 65 °F

    Partly Cloudy

  • Monday

    Monday: Showers likely, mainly after 4pm. Partly sunny, with a high near 82. South wind 5 to 14 mph. Chance of precipitation is 60%.

    High: 82 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 66. Breezy, with a south wind 20 to 22 mph. Chance of precipitation is 80%.

    Low: 66 °F

    Showers and
    Breezy

Detailed Forecast

Overnight
Partly cloudy, with a low around 63. West wind around 13 mph.
Juneteenth
Sunny through mid morning, then becoming mostly cloudy, with a high near 79. Southwest wind 14 to 17 mph.
Friday Night
Mostly clear, with a low around 65. Southwest wind 9 to 14 mph.
Saturday
Sunny, with a high near 81. West wind around 18 mph.
Saturday Night
Mostly clear, with a low around 64. West wind 8 to 11 mph.
Sunday
Sunny, with a high near 79. Southwest wind 7 to 10 mph.
Sunday Night
Partly cloudy, with a low around 65. Southwest wind 5 to 7 mph.
Monday
Showers likely, mainly after 4pm. Partly sunny, with a high near 82. South wind 5 to 14 mph. Chance of precipitation is 60%.
Monday Night
Showers and possibly a thunderstorm. Low around 66. Breezy, with a south wind 20 to 22 mph. Chance of precipitation is 80%.
Tuesday
Showers likely, mainly before 9am. Partly sunny, with a high near 80. West wind 14 to 18 mph. Chance of precipitation is 60%.
Tuesday Night
Partly cloudy, with a low around 65. West wind 7 to 9 mph.
Wednesday
Sunny, with a high near 79. West wind 7 to 9 mph becoming southwest in the afternoon.
Wednesday Night
Partly cloudy, with a low around 66. South wind around 7 mph.
Thursday
Mostly sunny, with a high near 80. Southeast wind 5 to 9 mph.
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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:
2:48 am EDT Jun 19, 2026
Forecast Valid:
3am EDT Jun 19, 2026-6pm EDT Jun 25, 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