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.

Partly Cloudy

59°F

15°C

Humidity 60%
Wind Speed NE 18 G 30 mph
Barometer 30.17 in (1021.7 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 15 Oct 10:53 am EDT
Extended Forecast for

2 Miles ESE Siasconset MA

  • Today

    Today: Sunny, with a high near 61. Breezy, with a north wind 15 to 20 mph, with gusts as high as 31 mph.

    High: 61 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Partly cloudy, with a low around 45. Northeast wind around 7 mph becoming southeast after midnight.

    Low: 45 °F

    Partly Cloudy

  • Friday

    Friday: Showers likely, mainly between 9am and 2pm. Patchy fog after 9am. Otherwise, cloudy, with a high near 68. South wind 14 to 17 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 68 °F

    Showers
    Likely and
    Patchy Fog

  • Friday Night

    Friday Night: Showers likely, mainly before 9pm. Patchy fog before midnight. Otherwise, mostly cloudy, with a low around 52. Southwest wind 11 to 17 mph becoming west after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 52 °F

    Showers
    Likely and
    Patchy Fog

  • Saturday

    Saturday: Showers likely, mainly before 1pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 55. Breezy, with a north wind around 22 mph, with gusts as high as 36 mph. Chance of precipitation is 70%.

    High: 55 °F

    Showers
    Likely and
    Patchy Fog

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 45. Breezy, with a north wind 17 to 22 mph.

    Low: 45 °F

    Partly Cloudy
    and Breezy

  • Sunday

    Sunday: Sunny, with a high near 55. North wind around 15 mph.

    High: 55 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 50. North wind around 10 mph becoming east after midnight.

    Low: 50 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 59. East wind 11 to 14 mph.

    High: 59 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 61. Breezy, with a north wind 15 to 20 mph, with gusts as high as 31 mph.
Tonight
Partly cloudy, with a low around 45. Northeast wind around 7 mph becoming southeast after midnight.
Friday
Showers likely, mainly between 9am and 2pm. Patchy fog after 9am. Otherwise, cloudy, with a high near 68. South wind 14 to 17 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Showers likely, mainly before 9pm. Patchy fog before midnight. Otherwise, mostly cloudy, with a low around 52. Southwest wind 11 to 17 mph becoming west after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Showers likely, mainly before 1pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 55. Breezy, with a north wind around 22 mph, with gusts as high as 36 mph. Chance of precipitation is 70%.
Saturday Night
Partly cloudy, with a low around 45. Breezy, with a north wind 17 to 22 mph.
Sunday
Sunny, with a high near 55. North wind around 15 mph.
Sunday Night
Mostly clear, with a low around 50. North wind around 10 mph becoming east after midnight.
Monday
Mostly sunny, with a high near 59. East wind 11 to 14 mph.
Monday Night
Partly cloudy, with a low around 52. North wind 9 to 11 mph.
Tuesday
Mostly sunny, with a high near 59. North wind 10 to 13 mph.
Tuesday Night
Partly cloudy, with a low around 52. North wind 8 to 10 mph.
Wednesday
Sunny, with a high near 58. Northeast wind around 16 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:
11:18 am EDT Oct 15, 2026
Forecast Valid:
11am EDT Oct 15, 2026-6pm EDT Oct 21, 2026
 
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Additional Resources

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Chance of Precipitation