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.

Fair

52°F

11°C

Humidity 80%
Wind Speed SW 9 mph
Barometer 29.92 in (1013.2 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Wind Chill49°F (9°C)
Last update 14 Apr 4:53 pm EDT
Extended Forecast for

3 Miles NNE Siasconset MA

  • Tonight

    Tonight: A slight chance of showers between 11pm and midnight. Patchy fog after 2am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 50. Southwest wind 10 to 14 mph. Chance of precipitation is 20%.

    Low: 50 °F

    Slight Chance
    Showers then
    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 56. West wind around 11 mph.

    High: 56 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 47. Southwest wind around 10 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 47 °F

    Chance
    Showers and
    Patchy Fog

  • Thursday

    Thursday: Partly sunny, with a high near 52. Southwest wind 9 to 13 mph.

    High: 52 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 50. Southwest wind 11 to 13 mph.

    Low: 50 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of showers, mainly after 5pm. Partly sunny, with a high near 53. Southwest wind around 10 mph. Chance of precipitation is 30%.

    High: 53 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers before 7pm. Mostly cloudy, with a low around 46. Northeast wind around 8 mph. Chance of precipitation is 30%.

    Low: 46 °F

    Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 49. Northeast wind around 8 mph.

    High: 49 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 47. Northeast wind around 6 mph becoming southeast after midnight.

    Low: 47 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of showers between 11pm and midnight. Patchy fog after 2am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 50. Southwest wind 10 to 14 mph. Chance of precipitation is 20%.
Wednesday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 56. West wind around 11 mph.
Wednesday Night
A chance of showers and thunderstorms. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 47. Southwest wind around 10 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Partly sunny, with a high near 52. Southwest wind 9 to 13 mph.
Thursday Night
Mostly cloudy, with a low around 50. Southwest wind 11 to 13 mph.
Friday
A chance of showers, mainly after 5pm. Partly sunny, with a high near 53. Southwest wind around 10 mph. Chance of precipitation is 30%.
Friday Night
A chance of showers before 7pm. Mostly cloudy, with a low around 46. Northeast wind around 8 mph. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 49. Northeast wind around 8 mph.
Saturday Night
Mostly cloudy, with a low around 47. Northeast wind around 6 mph becoming southeast after midnight.
Sunday
Mostly cloudy, with a high near 54. South wind 9 to 15 mph.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 43. Breezy, with a southwest wind 16 to 20 mph becoming west after midnight. Chance of precipitation is 50%.
Monday
Mostly sunny, with a high near 48. West wind around 18 mph.
Monday Night
Partly cloudy, with a low around 38. Northwest wind 16 to 18 mph.
Tuesday
Sunny, with a high near 46. Northwest wind 13 to 15 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:
4:00 pm EDT Apr 14, 2026
Forecast Valid:
5pm EDT Apr 14, 2026-6pm EDT Apr 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation