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

72°F

22°C

Humidity 82%
Wind Speed SW 14 mph
Barometer 29.81 in (1009.5 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 3 Jul 12:53 pm EDT
Extended Forecast for

3 Miles NNW Siasconset MA

  • This Afternoon

    This Afternoon: Sunny, with a high near 77. Southwest wind around 11 mph.

    High: 77 °F

    Sunny

  • Tonight

    Tonight: A slight chance of showers and thunderstorms, mainly between 10pm and 11pm. Some of the storms could be severe. Areas of fog between 11pm and 2am. Otherwise, mostly clear, with a low around 66. Southwest wind 6 to 10 mph becoming northwest after midnight. Chance of precipitation is 20%.

    Low: 66 °F

    Severe
    Thunderstorms
    and Areas Fog
    then Areas
    Fog

  • Independence Day

    Independence Day: Sunny, with a high near 76. Northwest wind 6 to 9 mph.

    High: 76 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 60. Southwest wind around 6 mph becoming northwest after midnight.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 76. Northwest wind 5 to 7 mph becoming southwest in the afternoon.

    High: 76 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 67. Southwest wind 8 to 10 mph.

    Low: 67 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 77. Southwest wind 11 to 15 mph.

    High: 77 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 69. Southwest wind around 14 mph.

    Low: 69 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 77. Southwest wind 13 to 15 mph.

    High: 77 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 77. Southwest wind around 11 mph.
Tonight
A slight chance of showers and thunderstorms, mainly between 10pm and 11pm. Some of the storms could be severe. Areas of fog between 11pm and 2am. Otherwise, mostly clear, with a low around 66. Southwest wind 6 to 10 mph becoming northwest after midnight. Chance of precipitation is 20%.
Independence Day
Sunny, with a high near 76. Northwest wind 6 to 9 mph.
Friday Night
Mostly clear, with a low around 60. Southwest wind around 6 mph becoming northwest after midnight.
Saturday
Mostly sunny, with a high near 76. Northwest wind 5 to 7 mph becoming southwest in the afternoon.
Saturday Night
Partly cloudy, with a low around 67. Southwest wind 8 to 10 mph.
Sunday
Mostly sunny, with a high near 77. Southwest wind 11 to 15 mph.
Sunday Night
Partly cloudy, with a low around 69. Southwest wind around 14 mph.
Monday
Mostly sunny, with a high near 77. Southwest wind 13 to 15 mph.
Monday Night
Partly cloudy, with a low around 69. Southwest wind 10 to 13 mph.
Tuesday
A chance of showers. Partly sunny, with a high near 77. Southwest wind around 11 mph. Chance of precipitation is 30%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 68. South wind around 8 mph. Chance of precipitation is 30%.
Wednesday
A chance of showers. Partly sunny, with a high near 77. South wind 9 to 11 mph. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Siasconset MA
 41.31°N 70.02°W (Elev. 13 ft)
Last Update:
11:45 am EDT Jul 3, 2025
Forecast Valid:
1pm EDT Jul 3, 2025-6pm EDT Jul 9, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation