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

27°F

-3°C

Humidity 89%
Wind Speed NE 6 mph
Barometer NA
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 5 Dec 10:53 pm EST
Extended Forecast for

2 Miles ENE Siasconset MA

  • Tonight

    Tonight: Mostly cloudy, with a low around 31. East wind around 6 mph.

    Low: 31 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of light rain after 3pm. Cloudy, with a high near 45. East wind 6 to 10 mph. Chance of precipitation is 20%.

    High: 45 °F

    Cloudy then
    Slight Chance
    Light Rain

  • Saturday Night

    Saturday Night: A slight chance of light rain before 8pm, then a slight chance of rain between 8pm and 11pm. Cloudy during the early evening, then gradual clearing, with a low around 35. South wind 7 to 11 mph becoming northwest after midnight. Chance of precipitation is 20%.

    Low: 35 °F

    Slight Chance
    Light Rain
    then Mostly
    Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 43. Northwest wind 7 to 10 mph.

    High: 43 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: A slight chance of rain after 1am. Mostly cloudy, with a low around 29. West wind 6 to 11 mph. Chance of precipitation is 20%.

    Low: 29 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Monday

    Monday: A slight chance of rain before noon. Mostly sunny, with a high near 37. Breezy, with a northwest wind 15 to 20 mph. Chance of precipitation is 20%.

    High: 37 °F

    Slight Chance
    Rain then
    Mostly Sunny
    and Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 25. North wind 11 to 17 mph.

    Low: 25 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 42. North wind 9 to 13 mph becoming southwest in the afternoon.

    High: 42 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of rain between 8pm and 2am. Mostly cloudy, with a low around 34. West wind 14 to 16 mph. Chance of precipitation is 40%.

    Low: 34 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly cloudy, with a low around 31. East wind around 6 mph.
Saturday
A slight chance of light rain after 3pm. Cloudy, with a high near 45. East wind 6 to 10 mph. Chance of precipitation is 20%.
Saturday Night
A slight chance of light rain before 8pm, then a slight chance of rain between 8pm and 11pm. Cloudy during the early evening, then gradual clearing, with a low around 35. South wind 7 to 11 mph becoming northwest after midnight. Chance of precipitation is 20%.
Sunday
Increasing clouds, with a high near 43. Northwest wind 7 to 10 mph.
Sunday Night
A slight chance of rain after 1am. Mostly cloudy, with a low around 29. West wind 6 to 11 mph. Chance of precipitation is 20%.
Monday
A slight chance of rain before noon. Mostly sunny, with a high near 37. Breezy, with a northwest wind 15 to 20 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 25. North wind 11 to 17 mph.
Tuesday
Partly sunny, with a high near 42. North wind 9 to 13 mph becoming southwest in the afternoon.
Tuesday Night
A chance of rain between 8pm and 2am. Mostly cloudy, with a low around 34. West wind 14 to 16 mph. Chance of precipitation is 40%.
Wednesday
Mostly cloudy, with a high near 49. Southwest wind around 15 mph.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 40. South wind around 14 mph. Chance of precipitation is 50%.
Thursday
A chance of rain. Partly sunny, with a high near 47. West wind 14 to 16 mph. Chance of precipitation is 50%.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 34. West wind around 16 mph. Chance of precipitation is 40%.
Friday
A chance of rain. Partly sunny, with a high near 42. West wind around 17 mph. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Siasconset MA
 41.28°N 69.97°W (Elev. 56 ft)
Last Update:
10:56 pm EST Dec 5, 2025
Forecast Valid:
11pm EST Dec 5, 2025-6pm EST Dec 12, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation