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

67°F

19°C

Humidity 84%
Wind Speed W 10 mph
Barometer 29.75 in (1007.4 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 14 Oct 3:53 pm EDT
Extended Forecast for

2 Miles ESE Siasconset MA

  • Tonight

    Tonight: Mostly clear, with a low around 54. Northwest wind 11 to 15 mph, with gusts as high as 25 mph.

    Low: 54 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 57. Breezy, with a north wind 13 to 20 mph.

    High: 57 °F

    Sunny and
    Breezy then
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 52. Northeast wind 5 to 7 mph becoming southeast after midnight.

    Low: 52 °F

    Partly Cloudy

  • Friday

    Friday: Showers, mainly after 7am. High near 67. Breezy, with a southeast wind 15 to 21 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 67 °F

    Showers and
    Breezy

  • Friday Night

    Friday Night: Showers likely, mainly after midnight. Mostly cloudy, with a low around 52. Breezy, with a southwest wind 22 to 24 mph. Chance of precipitation is 70%.

    Low: 52 °F

    Showers
    Likely and
    Breezy

  • Saturday

    Saturday: Showers likely, mainly before 9am. Mostly cloudy, with a high near 55. Windy, with a northwest wind 23 to 26 mph. Chance of precipitation is 60%.

    High: 55 °F

    Showers
    Likely and
    Windy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 45. Breezy, with a north wind 20 to 24 mph.

    Low: 45 °F

    Partly Cloudy
    and Breezy

  • Sunday

    Sunday: Sunny, with a high near 54. Northwest wind 13 to 18 mph.

    High: 54 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 49. Northwest wind 7 to 9 mph.

    Low: 49 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 54. Northwest wind 11 to 15 mph, with gusts as high as 25 mph.
Thursday
Sunny, with a high near 57. Breezy, with a north wind 13 to 20 mph.
Thursday Night
Partly cloudy, with a low around 52. Northeast wind 5 to 7 mph becoming southeast after midnight.
Friday
Showers, mainly after 7am. High near 67. Breezy, with a southeast wind 15 to 21 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Showers likely, mainly after midnight. Mostly cloudy, with a low around 52. Breezy, with a southwest wind 22 to 24 mph. Chance of precipitation is 70%.
Saturday
Showers likely, mainly before 9am. Mostly cloudy, with a high near 55. Windy, with a northwest wind 23 to 26 mph. Chance of precipitation is 60%.
Saturday Night
Partly cloudy, with a low around 45. Breezy, with a north wind 20 to 24 mph.
Sunday
Sunny, with a high near 54. Northwest wind 13 to 18 mph.
Sunday Night
Mostly clear, with a low around 49. Northwest wind 7 to 9 mph.
Monday
Sunny, with a high near 59. South wind 10 to 14 mph.
Monday Night
Partly cloudy, with a low around 54. Southwest wind 10 to 13 mph.
Tuesday
Mostly sunny, with a high near 60. West wind 9 to 11 mph.
Tuesday Night
Partly cloudy, with a low around 54. North wind around 8 mph.
Wednesday
Sunny, with a high near 59. Northeast wind 10 to 13 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Siasconset MA
 41.26°N 69.97°W (Elev. 39 ft)
Last Update:
3:18 pm EDT Oct 14, 2026
Forecast Valid:
4pm EDT Oct 14, 2026-6pm EDT Oct 21, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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