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

42°F

6°C

Humidity 96%
Wind Speed S 13 mph
Barometer 30.12 in (1019.9 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 7 Mar 1:53 pm EST
Extended Forecast for

2 Miles ENE Siasconset MA

  • This Afternoon

    This Afternoon: Patchy fog. Otherwise, mostly cloudy, with a high near 46. Southwest wind around 11 mph.

    High: 46 °F

    Patchy Fog

  • Tonight

    Tonight: A chance of rain after 8pm. Patchy fog. Otherwise, cloudy, with a low around 41. Southwest wind 11 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 41 °F

    Chance Rain
    and Patchy
    Fog

  • Sunday

    Sunday: Rain likely, mainly before 11am. Patchy fog before 1pm, then patchy fog after 5pm. Otherwise, cloudy, with a high near 49. Southwest wind 10 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 49 °F

    Rain Likely
    and Patchy
    Fog

  • Sunday Night

    Sunday Night: Patchy fog before 8pm. Otherwise, cloudy during the early evening, then gradual clearing, with a low around 35. West wind 6 to 8 mph.

    Low: 35 °F

    Patchy Fog
    then Partly
    Cloudy

  • Monday

    Monday: Sunny, with a high near 44. Southwest wind 6 to 10 mph.

    High: 44 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 38. Southwest wind around 9 mph.

    Low: 38 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 45. Southwest wind 7 to 9 mph.

    High: 45 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Cloudy, with a low around 38. South wind 6 to 8 mph.

    Low: 38 °F

    Cloudy

  • Wednesday

    Wednesday: Cloudy, with a high near 47. South wind 10 to 15 mph.

    High: 47 °F

    Cloudy

Detailed Forecast

This Afternoon
Patchy fog. Otherwise, mostly cloudy, with a high near 46. Southwest wind around 11 mph.
Tonight
A chance of rain after 8pm. Patchy fog. Otherwise, cloudy, with a low around 41. Southwest wind 11 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Rain likely, mainly before 11am. Patchy fog before 1pm, then patchy fog after 5pm. Otherwise, cloudy, with a high near 49. Southwest wind 10 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Patchy fog before 8pm. Otherwise, cloudy during the early evening, then gradual clearing, with a low around 35. West wind 6 to 8 mph.
Monday
Sunny, with a high near 44. Southwest wind 6 to 10 mph.
Monday Night
Partly cloudy, with a low around 38. Southwest wind around 9 mph.
Tuesday
Mostly cloudy, with a high near 45. Southwest wind 7 to 9 mph.
Tuesday Night
Cloudy, with a low around 38. South wind 6 to 8 mph.
Wednesday
Cloudy, with a high near 47. South wind 10 to 15 mph.
Wednesday Night
A chance of rain after 8pm. Cloudy, with a low around 40. Breezy, with a south wind 16 to 21 mph. Chance of precipitation is 40%.
Thursday
A chance of rain. Cloudy, with a high near 46. Breezy, with a southwest wind 20 to 22 mph. Chance of precipitation is 50%.
Thursday Night
Mostly cloudy, with a low around 29. Breezy, with a west wind 17 to 21 mph.
Friday
Partly sunny, with a high near 39. West wind 13 to 15 mph.
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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:
7:57 am EST Mar 7, 2026
Forecast Valid:
2pm EST Mar 7, 2026-6pm EDT Mar 13, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation