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.

Overcast and Breezy

41°F

5°C

Humidity 65%
Wind Speed SW 22 G 32 mph
Barometer NA
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 10 Dec 1:53 am EST
Extended Forecast for

Siasconset MA

  • Overnight

    Overnight: A slight chance of showers after 4am. Cloudy, with a low around 31. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    Low: 31 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: Cloudy, then gradually becoming mostly sunny, with a high near 50. South wind 14 to 17 mph.

    High: 50 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: A chance of rain, mainly between midnight and 4am. Mostly cloudy, with a low around 34. West wind 13 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 40%.

    Low: 34 °F

    Chance Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 45. Windy, with a west wind 25 to 30 mph increasing to 31 to 36 mph in the afternoon.

    High: 45 °F

    Mostly Sunny
    and Windy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 27. Windy, with a west wind 24 to 28 mph, with gusts as high as 47 mph.

    Low: 27 °F

    Partly Cloudy
    and Windy

  • Friday

    Friday: Mostly sunny, with a high near 38. Breezy, with a west wind 22 to 24 mph, with gusts as high as 43 mph.

    High: 38 °F

    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 30. West wind 9 to 15 mph, with gusts as high as 29 mph.

    Low: 30 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 41. West wind 8 to 13 mph, with gusts as high as 23 mph.

    High: 41 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of snow after 2am. Mostly cloudy, with a low around 30. West wind 11 to 13 mph. Chance of precipitation is 30%.

    Low: 30 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

Overnight
A slight chance of showers after 4am. Cloudy, with a low around 31. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Wednesday
Cloudy, then gradually becoming mostly sunny, with a high near 50. South wind 14 to 17 mph.
Wednesday Night
A chance of rain, mainly between midnight and 4am. Mostly cloudy, with a low around 34. West wind 13 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 40%.
Thursday
Mostly sunny, with a high near 45. Windy, with a west wind 25 to 30 mph increasing to 31 to 36 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 27. Windy, with a west wind 24 to 28 mph, with gusts as high as 47 mph.
Friday
Mostly sunny, with a high near 38. Breezy, with a west wind 22 to 24 mph, with gusts as high as 43 mph.
Friday Night
Partly cloudy, with a low around 30. West wind 9 to 15 mph, with gusts as high as 29 mph.
Saturday
Partly sunny, with a high near 41. West wind 8 to 13 mph, with gusts as high as 23 mph.
Saturday Night
A chance of snow after 2am. Mostly cloudy, with a low around 30. West wind 11 to 13 mph. Chance of precipitation is 30%.
Sunday
A chance of rain and snow before 10am, then rain likely between 10am and 3pm, then a chance of snow after 3pm. Mostly cloudy, with a high near 38. West wind 11 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Sunday Night
Mostly cloudy, with a low around 22. Northwest wind 16 to 18 mph, with gusts as high as 28 mph.
Monday
Mostly sunny, with a high near 32. Northwest wind 14 to 18 mph, with gusts as high as 29 mph.
Monday Night
Mostly cloudy, with a low around 23. Northwest wind 10 to 13 mph.
Tuesday
Partly sunny, with a high near 36. West wind 11 to 14 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:
1:53 am EST Dec 10, 2025
Forecast Valid:
2am EST Dec 10, 2025-6pm EST Dec 16, 2025
 
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Additional Resources

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High Temperature

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Chance of Precipitation