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

49°F

9°C

Humidity 97%
Wind Speed SW 14 mph
Barometer 30.26 in (1024.5 mb)
Dewpoint 48°F (9°C)
Visibility 0.25 mi
Wind Chill44°F (7°C)
Last update 3 Apr 11:53 am EDT
Extended Forecast for

3 Miles NNE Siasconset MA

  • This Afternoon

    This Afternoon: Patchy fog. Otherwise, mostly cloudy, with a high near 50. Southwest wind 13 to 16 mph.

    High: 50 °F

    Patchy Fog

  • Tonight

    Tonight: Patchy fog. Otherwise, mostly cloudy, with a low around 44. Breezy, with a southwest wind 18 to 21 mph.

    Low: 44 °F

    Patchy Fog
    and Breezy

  • Saturday

    Saturday: Patchy fog before 10am. Otherwise, partly sunny, with a high near 48. West wind 10 to 16 mph becoming northeast in the afternoon.

    High: 48 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Saturday Night

    Saturday Night: A slight chance of showers after 9pm. Cloudy, with a low around 41. East wind around 15 mph. Chance of precipitation is 20%.

    Low: 41 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Showers, mainly after 3pm. High near 52. Windy, with a southwest wind 20 to 26 mph, with gusts as high as 37 mph. Chance of precipitation is 80%.

    High: 52 °F

    Slight Chance
    Showers and
    Breezy then
    Showers and
    Windy

  • Sunday Night

    Sunday Night: Showers likely, mainly before 8pm. Mostly cloudy, with a low around 41. Breezy, with a southwest wind 13 to 22 mph becoming west after midnight. Chance of precipitation is 60%.

    Low: 41 °F

    Showers
    Likely and
    Breezy

  • Monday

    Monday: Mostly sunny, with a high near 46. West wind 14 to 17 mph.

    High: 46 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 40. West wind 8 to 15 mph.

    Low: 40 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of rain showers after 4pm, mixing with snow after 5pm. Mostly sunny, with a high near 44. West wind around 8 mph. Chance of precipitation is 30%.

    High: 44 °F

    Mostly Sunny
    then Chance
    Rain/Snow

Detailed Forecast

This Afternoon
Patchy fog. Otherwise, mostly cloudy, with a high near 50. Southwest wind 13 to 16 mph.
Tonight
Patchy fog. Otherwise, mostly cloudy, with a low around 44. Breezy, with a southwest wind 18 to 21 mph.
Saturday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 48. West wind 10 to 16 mph becoming northeast in the afternoon.
Saturday Night
A slight chance of showers after 9pm. Cloudy, with a low around 41. East wind around 15 mph. Chance of precipitation is 20%.
Sunday
Showers, mainly after 3pm. High near 52. Windy, with a southwest wind 20 to 26 mph, with gusts as high as 37 mph. Chance of precipitation is 80%.
Sunday Night
Showers likely, mainly before 8pm. Mostly cloudy, with a low around 41. Breezy, with a southwest wind 13 to 22 mph becoming west after midnight. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 46. West wind 14 to 17 mph.
Monday Night
Partly cloudy, with a low around 40. West wind 8 to 15 mph.
Tuesday
A chance of rain showers after 4pm, mixing with snow after 5pm. Mostly sunny, with a high near 44. West wind around 8 mph. Chance of precipitation is 30%.
Tuesday Night
Mostly cloudy, with a low around 35. North wind 9 to 18 mph.
Wednesday
Sunny, with a high near 41. North wind 8 to 17 mph.
Wednesday Night
Mostly clear, with a low around 37. South wind 7 to 10 mph.
Thursday
Sunny, with a high near 48. South wind 13 to 16 mph.
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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:
7:01 am EDT Apr 3, 2026
Forecast Valid:
12pm EDT Apr 3, 2026-6pm EDT Apr 9, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation