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

49°F

9°C

Humidity 90%
Wind Speed SW 17 mph
Barometer 29.94 in (1013.8 mb)
Dewpoint 46°F (8°C)
Visibility 7.00 mi
Wind Chill43°F (6°C)
Last update 1 Apr 2:53 am EDT
Extended Forecast for

3 Miles NNE Siasconset MA

  • Overnight

    Overnight: Patchy fog before 5am. Otherwise, mostly cloudy, with a low around 45. Windy, with a southwest wind around 26 mph, with gusts as high as 36 mph.

    Low: 45 °F

    Patchy Fog
    and Windy

  • Wednesday

    Wednesday: Showers likely, mainly after 5pm. Patchy fog before 11am, then patchy fog after noon. Otherwise, partly sunny, with a high near 49. Breezy, with a southwest wind 17 to 24 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 49 °F

    Showers
    Likely and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: Showers. Patchy fog. Low around 39. Northeast wind 8 to 18 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 39 °F

    Showers and
    Patchy Fog

  • Thursday

    Thursday: Showers likely, mainly before 1pm. Patchy fog. Otherwise, cloudy, with a high near 42. Breezy, with a northeast wind 18 to 20 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 42 °F

    Showers
    Likely and
    Patchy Fog

  • Thursday Night

    Thursday Night: Patchy fog before 9pm. Otherwise, cloudy, with a low around 40. East wind 8 to 15 mph.

    Low: 40 °F

    Patchy Fog
    then Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 49. Southwest wind 8 to 16 mph.

    High: 49 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 45. Breezy, with a southwest wind 18 to 21 mph.

    Low: 45 °F

    Mostly Cloudy
    and Breezy

  • Saturday

    Saturday: Partly sunny, with a high near 48. West wind 10 to 14 mph.

    High: 48 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 43. East wind 10 to 15 mph becoming south after midnight.

    Low: 43 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Patchy fog before 5am. Otherwise, mostly cloudy, with a low around 45. Windy, with a southwest wind around 26 mph, with gusts as high as 36 mph.
Wednesday
Showers likely, mainly after 5pm. Patchy fog before 11am, then patchy fog after noon. Otherwise, partly sunny, with a high near 49. Breezy, with a southwest wind 17 to 24 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Showers. Patchy fog. Low around 39. Northeast wind 8 to 18 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Showers likely, mainly before 1pm. Patchy fog. Otherwise, cloudy, with a high near 42. Breezy, with a northeast wind 18 to 20 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Patchy fog before 9pm. Otherwise, cloudy, with a low around 40. East wind 8 to 15 mph.
Friday
Mostly cloudy, with a high near 49. Southwest wind 8 to 16 mph.
Friday Night
Mostly cloudy, with a low around 45. Breezy, with a southwest wind 18 to 21 mph.
Saturday
Partly sunny, with a high near 48. West wind 10 to 14 mph.
Saturday Night
Mostly cloudy, with a low around 43. East wind 10 to 15 mph becoming south after midnight.
Sunday
A chance of showers after 2pm. Partly sunny, with a high near 52. Breezy, with a south wind 20 to 25 mph. Chance of precipitation is 30%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 41. Breezy, with a southwest wind 18 to 23 mph. Chance of precipitation is 60%.
Monday
A chance of showers. Mostly sunny, with a high near 46. West wind 10 to 15 mph. Chance of precipitation is 30%.
Monday Night
Mostly clear, with a low around 39. North wind 8 to 10 mph.
Tuesday
Mostly sunny, with a high near 44. North wind around 9 mph becoming east in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Siasconset MA
 41.33°N 69.98°W (Elev. 0 ft)
Last Update:
12:19 am EDT Apr 1, 2026
Forecast Valid:
3am EDT Apr 1, 2026-6pm EDT Apr 7, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation