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

45°F

7°C

Humidity 93%
Wind Speed SW 12 mph
Barometer 29.39 in (995.3 mb)
Dewpoint 43°F (6°C)
Visibility 9.00 mi
Wind Chill39°F (4°C)
Last update 15 Jan 9:53 am EST
Extended Forecast for

Nantucket MA

  • Today

    Today: Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 40 by 5pm. Southwest wind 14 to 17 mph, with gusts as high as 28 mph.

    High: 47 °F⇓

    Decreasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, with a low around 24. Breezy, with a west wind 16 to 21 mph, with gusts as high as 36 mph.

    Low: 24 °F

    Cloudy then
    Mostly Cloudy
    and Breezy

  • Friday

    Friday: Mostly sunny, with a high near 38. Breezy, with a west wind 21 to 24 mph, with gusts as high as 38 mph.

    High: 38 °F

    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 31. West wind 8 to 15 mph.

    Low: 31 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of rain, mainly before 3pm. Mostly cloudy, with a high near 43. Southwest wind 7 to 10 mph. Chance of precipitation is 40%.

    High: 43 °F

    Chance Rain

  • Saturday Night

    Saturday Night: A slight chance of showers before 9pm, then a slight chance of showers after 5am. Mostly cloudy, with a low around 35. West wind around 8 mph. Chance of precipitation is 20%.

    Low: 35 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Sunday

    Sunday: A chance of snow before 9am, then a chance of rain between 9am and 4pm, then snow likely after 4pm. Mostly cloudy, with a high near 41. Southwest wind 7 to 10 mph. Chance of precipitation is 60%.

    High: 41 °F

    Chance
    Rain/Snow
    then
    Rain/Snow
    Likely

  • Sunday Night

    Sunday Night: Snow likely, mainly before 11pm. Mostly cloudy, with a low around 27. North wind 10 to 14 mph. Chance of precipitation is 70%.

    Low: 27 °F

    Snow Likely

  • M.L.King Day

    M.L.King Day: Partly sunny, with a high near 34. West wind 13 to 16 mph, with gusts as high as 28 mph.

    High: 34 °F

    Partly Sunny

Detailed Forecast

Today
Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 40 by 5pm. Southwest wind 14 to 17 mph, with gusts as high as 28 mph.
Tonight
Mostly cloudy, with a low around 24. Breezy, with a west wind 16 to 21 mph, with gusts as high as 36 mph.
Friday
Mostly sunny, with a high near 38. Breezy, with a west wind 21 to 24 mph, with gusts as high as 38 mph.
Friday Night
Mostly cloudy, with a low around 31. West wind 8 to 15 mph.
Saturday
A chance of rain, mainly before 3pm. Mostly cloudy, with a high near 43. Southwest wind 7 to 10 mph. Chance of precipitation is 40%.
Saturday Night
A slight chance of showers before 9pm, then a slight chance of showers after 5am. Mostly cloudy, with a low around 35. West wind around 8 mph. Chance of precipitation is 20%.
Sunday
A chance of snow before 9am, then a chance of rain between 9am and 4pm, then snow likely after 4pm. Mostly cloudy, with a high near 41. Southwest wind 7 to 10 mph. Chance of precipitation is 60%.
Sunday Night
Snow likely, mainly before 11pm. Mostly cloudy, with a low around 27. North wind 10 to 14 mph. Chance of precipitation is 70%.
M.L.King Day
Partly sunny, with a high near 34. West wind 13 to 16 mph, with gusts as high as 28 mph.
Monday Night
Mostly cloudy, with a low around 20. West wind around 16 mph.
Tuesday
Mostly sunny, with a high near 28. West wind 15 to 17 mph, with gusts as high as 29 mph.
Tuesday Night
Partly cloudy, with a low around 15. West wind 15 to 17 mph.
Wednesday
Partly sunny, with a high near 29. West wind 14 to 16 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Nantucket MA
 41.28°N 70.12°W (Elev. 49 ft)
Last Update:
5:49 am EST Jan 15, 2026
Forecast Valid:
10am EST Jan 15, 2026-6pm EST Jan 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation