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.

53°F

12°C

Humidity 69%
Wind Speed SW 12 mph
Barometer 30.06 in (1017.8 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill49°F (9°C)
Last update 9 Mar 1:53 pm EDT
Extended Forecast for

3 Miles NNE Siasconset MA

  • This Afternoon

    This Afternoon: Patchy fog before 3pm. Otherwise, partly sunny, with a high near 44. South wind around 9 mph.

    High: 44 °F

    Patchy Fog

  • Tonight

    Tonight: Patchy fog. Otherwise, mostly cloudy, with a low around 39. South wind around 10 mph.

    Low: 39 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 2pm. Otherwise, mostly cloudy, with a high near 49. Southwest wind 9 to 11 mph.

    High: 49 °F

    Patchy Fog

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40. Southwest wind around 9 mph.

    Low: 40 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 48. South wind 7 to 14 mph.

    High: 48 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Wednesday Night

    Wednesday Night: A slight chance of rain and thunderstorms between 2am and 5am, then a chance of rain after 5am. Mostly cloudy, with a low around 43. Breezy, with a south wind 17 to 23 mph. Chance of precipitation is 30%.

    Low: 43 °F

    Breezy.
    Mostly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: A chance of rain before 7am, then a chance of rain after 2pm. Mostly cloudy, with a high near 48. Breezy, with a southwest wind 17 to 22 mph. Chance of precipitation is 40%.

    High: 48 °F

    Chance Rain
    and Breezy

  • Thursday Night

    Thursday Night: A chance of rain before 11pm, then a chance of snow between 11pm and midnight. Mostly cloudy, with a low around 32. Breezy, with a northwest wind 16 to 22 mph. Chance of precipitation is 30%.

    Low: 32 °F

    Breezy.
    Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 41. Northwest wind 11 to 14 mph becoming southwest in the afternoon.

    High: 41 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Patchy fog before 3pm. Otherwise, partly sunny, with a high near 44. South wind around 9 mph.
Tonight
Patchy fog. Otherwise, mostly cloudy, with a low around 39. South wind around 10 mph.
Tuesday
Patchy fog before 2pm. Otherwise, mostly cloudy, with a high near 49. Southwest wind 9 to 11 mph.
Tuesday Night
Mostly cloudy, with a low around 40. Southwest wind around 9 mph.
Wednesday
Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 48. South wind 7 to 14 mph.
Wednesday Night
A slight chance of rain and thunderstorms between 2am and 5am, then a chance of rain after 5am. Mostly cloudy, with a low around 43. Breezy, with a south wind 17 to 23 mph. Chance of precipitation is 30%.
Thursday
A chance of rain before 7am, then a chance of rain after 2pm. Mostly cloudy, with a high near 48. Breezy, with a southwest wind 17 to 22 mph. Chance of precipitation is 40%.
Thursday Night
A chance of rain before 11pm, then a chance of snow between 11pm and midnight. Mostly cloudy, with a low around 32. Breezy, with a northwest wind 16 to 22 mph. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 41. Northwest wind 11 to 14 mph becoming southwest in the afternoon.
Friday Night
A chance of rain after 10pm. Mostly cloudy, with a low around 36. Breezy, with a south wind 16 to 24 mph. Chance of precipitation is 40%.
Saturday
Mostly sunny, with a high near 42. Breezy, with a west wind 21 to 23 mph.
Saturday Night
Partly cloudy, with a low around 34. West wind 9 to 13 mph.
Sunday
Mostly cloudy, with a high near 45. North wind 9 to 17 mph becoming southeast in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Siasconset MA
 41.33°N 69.98°W (Elev. 0 ft)
Last Update:
1:00 pm EDT Mar 9, 2026
Forecast Valid:
2pm EDT Mar 9, 2026-6pm EDT Mar 15, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation