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.

Fog/Mist

48°F

9°C

Humidity 93%
Wind Speed SW 16 mph
Barometer 29.98 in (1015.3 mb)
Dewpoint 46°F (8°C)
Visibility 6.00 mi
Wind Chill42°F (6°C)
Last update 31 Mar 5:53 pm EDT
Extended Forecast for

4 Miles N Siasconset MA

  • Tonight

    Tonight: Isolated showers before 3am, then isolated showers after 5am. Patchy fog between 11pm and midnight. Otherwise, mostly cloudy, with a low around 47. Breezy, with a southwest wind 6 to 11 mph increasing to 19 to 24 mph after midnight. Chance of precipitation is 20%.

    Low: 47 °F

    Isolated
    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: A chance of showers, mainly after 1pm. Patchy fog between noon and 4pm. Otherwise, partly sunny, with a high near 49. Breezy, with a southwest wind 20 to 24 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 49 °F

    Chance
    Showers and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after 7pm. Patchy fog between 7pm and 9pm. Otherwise, cloudy, with a low around 39. Northeast wind 11 to 15 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 39 °F

    Showers
    Likely and
    Patchy Fog

  • Thursday

    Thursday: A chance of showers, mainly after 2pm. Cloudy, with a high near 42. Northeast wind around 17 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 42 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A slight chance of showers before 2am. Cloudy, with a low around 40. East wind 9 to 14 mph. Chance of precipitation is 20%.

    Low: 40 °F

    Slight Chance
    Showers

  • Friday

    Friday: Mostly cloudy, with a high near 49. Southwest wind 9 to 17 mph.

    High: 49 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 45. Breezy, with a southwest wind 18 to 22 mph.

    Low: 45 °F

    Mostly Cloudy
    and Breezy

  • Saturday

    Saturday: Mostly cloudy, with a high near 48. West wind around 14 mph becoming north in the afternoon.

    High: 48 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 44. East wind 13 to 15 mph becoming south after midnight.

    Low: 44 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Isolated showers before 3am, then isolated showers after 5am. Patchy fog between 11pm and midnight. Otherwise, mostly cloudy, with a low around 47. Breezy, with a southwest wind 6 to 11 mph increasing to 19 to 24 mph after midnight. Chance of precipitation is 20%.
Wednesday
A chance of showers, mainly after 1pm. Patchy fog between noon and 4pm. Otherwise, partly sunny, with a high near 49. Breezy, with a southwest wind 20 to 24 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Showers likely, mainly after 7pm. Patchy fog between 7pm and 9pm. Otherwise, cloudy, with a low around 39. Northeast wind 11 to 15 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
A chance of showers, mainly after 2pm. Cloudy, with a high near 42. Northeast wind around 17 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A slight chance of showers before 2am. Cloudy, with a low around 40. East wind 9 to 14 mph. Chance of precipitation is 20%.
Friday
Mostly cloudy, with a high near 49. Southwest wind 9 to 17 mph.
Friday Night
Mostly cloudy, with a low around 45. Breezy, with a southwest wind 18 to 22 mph.
Saturday
Mostly cloudy, with a high near 48. West wind around 14 mph becoming north in the afternoon.
Saturday Night
Mostly cloudy, with a low around 44. East wind 13 to 15 mph becoming south after midnight.
Sunday
A chance of rain after 11am. Mostly cloudy, with a high near 52. South wind around 18 mph. Chance of precipitation is 30%.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 43. Breezy, with a southwest wind 20 to 22 mph. Chance of precipitation is 40%.
Monday
A chance of rain. Mostly cloudy, with a high near 47. Northwest wind 14 to 17 mph. Chance of precipitation is 40%.
Monday Night
A chance of rain. Mostly cloudy, with a low around 39. North wind 11 to 15 mph. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 43. North wind 13 to 15 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Siasconset MA
 41.33°N 69.98°W (Elev. 0 ft)
Last Update:
6:35 am EDT Mar 31, 2026
Forecast Valid:
6pm EDT Mar 31, 2026-6pm EDT Apr 7, 2026
 
Forecast Discussion
 
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Additional Resources

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