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/Mist

61°F

16°C

Humidity 87%
Wind Speed SW 20 mph
Barometer 30.07 in (1018.1 mb)
Dewpoint 57°F (14°C)
Visibility 0.75 mi
Last update 19 May 1:53 pm EDT
Extended Forecast for

Nantucket Memorial Airport MA

  • This Afternoon

    This Afternoon: Patchy fog between 3pm and 5pm. Otherwise, partly sunny, with a high near 67. Breezy, with a southwest wind around 21 mph.

    High: 67 °F

    Patchy Fog
    and Breezy

  • Tonight

    Tonight: Patchy fog. Otherwise, mostly cloudy, with a low around 60. Southwest wind 15 to 17 mph.

    Low: 60 °F

    Patchy Fog

  • Wednesday

    Wednesday: Mostly sunny, with a high near 70. Breezy, with a southwest wind 16 to 20 mph.

    High: 70 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. West wind 10 to 14 mph becoming north after midnight. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 54 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, mainly before 8am. Partly sunny, with a high near 63. North wind 13 to 15 mph. Chance of precipitation is 30%.

    High: 63 °F

    Chance
    Showers then
    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 51. Southeast wind around 5 mph becoming calm in the evening.

    Low: 51 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 61. Northeast wind around 10 mph becoming east in the afternoon.

    High: 61 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers after 3am. Mostly cloudy, with a low around 51. South wind around 6 mph becoming calm after midnight. Chance of precipitation is 30%.

    Low: 51 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: A chance of showers. Cloudy, with a high near 61. Southeast wind 5 to 14 mph. Chance of precipitation is 50%.

    High: 61 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Patchy fog between 3pm and 5pm. Otherwise, partly sunny, with a high near 67. Breezy, with a southwest wind around 21 mph.
Tonight
Patchy fog. Otherwise, mostly cloudy, with a low around 60. Southwest wind 15 to 17 mph.
Wednesday
Mostly sunny, with a high near 70. Breezy, with a southwest wind 16 to 20 mph.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. West wind 10 to 14 mph becoming north after midnight. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers, mainly before 8am. Partly sunny, with a high near 63. North wind 13 to 15 mph. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 51. Southeast wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 61. Northeast wind around 10 mph becoming east in the afternoon.
Friday Night
A chance of showers after 3am. Mostly cloudy, with a low around 51. South wind around 6 mph becoming calm after midnight. Chance of precipitation is 30%.
Saturday
A chance of showers. Cloudy, with a high near 61. Southeast wind 5 to 14 mph. Chance of precipitation is 50%.
Saturday Night
Showers likely, mainly after 11pm. Cloudy, with a low around 51. East wind 10 to 13 mph. Chance of precipitation is 60%.
Sunday
Showers likely. Mostly cloudy, with a high near 61. East wind 15 to 18 mph. Chance of precipitation is 60%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 52. East wind 10 to 13 mph. Chance of precipitation is 60%.
Memorial Day
A chance of showers. Mostly cloudy, with a high near 64. East wind 9 to 13 mph becoming northwest in the afternoon. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Nantucket Memorial Airport MA
 41.25°N 70.06°W (Elev. 0 ft)
Last Update:
2:28 pm EDT May 19, 2026
Forecast Valid:
2pm EDT May 19, 2026-6pm EDT May 25, 2026
 
Forecast Discussion
 
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