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

56°F

13°C

Humidity 93%
Wind Speed N 6 mph
Barometer 30.07 in (1018.3 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 12 Jul 2:53 am EDT
Extended Forecast for

3 Miles NNE Siasconset MA

  • Overnight

    Overnight: Clear, with a low around 66. Calm wind.

    Low: 66 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 75. Northeast wind 6 to 9 mph.

    High: 75 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 66. East wind around 5 mph becoming calm in the evening.

    Low: 66 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 76. South wind 5 to 11 mph.

    High: 76 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 69. Southwest wind 13 to 15 mph.

    Low: 69 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 80. Breezy, with a southwest wind 17 to 20 mph.

    High: 80 °F

    Sunny then
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 72. Breezy, with a southwest wind around 23 mph.

    Low: 72 °F

    Mostly Clear
    and Breezy

  • Wednesday

    Wednesday: Sunny, with a high near 82. Breezy, with a west wind 18 to 21 mph.

    High: 82 °F

    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: A chance of showers between 11pm and 2am. Partly cloudy, with a low around 72. Northwest wind 8 to 16 mph. Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    Showers

Detailed Forecast

Overnight
Clear, with a low around 66. Calm wind.
Sunday
Sunny, with a high near 75. Northeast wind 6 to 9 mph.
Sunday Night
Mostly clear, with a low around 66. East wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 76. South wind 5 to 11 mph.
Monday Night
Mostly clear, with a low around 69. Southwest wind 13 to 15 mph.
Tuesday
Sunny, with a high near 80. Breezy, with a southwest wind 17 to 20 mph.
Tuesday Night
Mostly clear, with a low around 72. Breezy, with a southwest wind around 23 mph.
Wednesday
Sunny, with a high near 82. Breezy, with a west wind 18 to 21 mph.
Wednesday Night
A chance of showers between 11pm and 2am. Partly cloudy, with a low around 72. Northwest wind 8 to 16 mph. Chance of precipitation is 30%.
Thursday
Sunny, with a high near 79. Northwest wind around 9 mph becoming southwest in the afternoon.
Thursday Night
Partly cloudy, with a low around 71. Southwest wind around 11 mph.
Friday
Mostly sunny, with a high near 79. West wind around 11 mph.
Friday Night
Partly cloudy, with a low around 71. Southwest wind around 11 mph.
Saturday
Mostly sunny, with a high near 78. North wind around 10 mph becoming south in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Siasconset MA
 41.33°N 69.98°W (Elev. 0 ft)
Last Update:
2:03 am EDT Jul 12, 2026
Forecast Valid:
3am EDT Jul 12, 2026-6pm EDT Jul 18, 2026
 
Forecast Discussion
 
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Additional Resources

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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