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

64°F

18°C

Humidity 90%
Wind Speed W 13 mph
Barometer 29.78 in (1008.5 mb)
Dewpoint 61°F (16°C)
Visibility 9.00 mi
Last update 14 Oct 5:53 pm EDT
Extended Forecast for

Siasconset MA

  • Tonight

    Tonight: Mostly clear, with a low around 53. Northwest wind 10 to 13 mph, with gusts as high as 25 mph.

    Low: 53 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 57. North wind 13 to 16 mph, with gusts as high as 28 mph.

    High: 57 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 51. Northeast wind around 6 mph becoming light and variable.

    Low: 51 °F

    Partly Cloudy

  • Friday

    Friday: Showers, mainly after 7am. High near 68. Southeast wind 13 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 68 °F

    Showers

  • Friday Night

    Friday Night: Showers likely. Mostly cloudy, with a low around 52. Breezy, with a southwest wind 17 to 20 mph becoming northwest after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 70%.

    Low: 52 °F

    Showers
    Likely and
    Breezy

  • Saturday

    Saturday: A chance of showers, mainly before 2pm. Partly sunny, with a high near 55. Breezy, with a northwest wind 18 to 22 mph, with gusts as high as 32 mph. Chance of precipitation is 50%.

    High: 55 °F

    Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 44. North wind 15 to 17 mph.

    Low: 44 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 54. Northwest wind 10 to 14 mph.

    High: 54 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 49. Northwest wind 5 to 7 mph becoming southwest after midnight.

    Low: 49 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 53. Northwest wind 10 to 13 mph, with gusts as high as 25 mph.
Thursday
Sunny, with a high near 57. North wind 13 to 16 mph, with gusts as high as 28 mph.
Thursday Night
Partly cloudy, with a low around 51. Northeast wind around 6 mph becoming light and variable.
Friday
Showers, mainly after 7am. High near 68. Southeast wind 13 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Showers likely. Mostly cloudy, with a low around 52. Breezy, with a southwest wind 17 to 20 mph becoming northwest after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 70%.
Saturday
A chance of showers, mainly before 2pm. Partly sunny, with a high near 55. Breezy, with a northwest wind 18 to 22 mph, with gusts as high as 32 mph. Chance of precipitation is 50%.
Saturday Night
Partly cloudy, with a low around 44. North wind 15 to 17 mph.
Sunday
Sunny, with a high near 54. Northwest wind 10 to 14 mph.
Sunday Night
Mostly clear, with a low around 49. Northwest wind 5 to 7 mph becoming southwest after midnight.
Monday
Sunny, with a high near 59. South wind 8 to 13 mph.
Monday Night
Partly cloudy, with a low around 53. Southwest wind 8 to 10 mph.
Tuesday
Mostly sunny, with a high near 60. West wind 8 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 53. North wind around 6 mph.
Wednesday
Sunny, with a high near 59. Northeast wind 8 to 10 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Siasconset MA
 41.28°N 70°W (Elev. 49 ft)
Last Update:
3:18 pm EDT Oct 14, 2026
Forecast Valid:
6pm EDT Oct 14, 2026-6pm EDT Oct 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation