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.

Partly Cloudy

68°F

20°C

Humidity 100%
Wind Speed Calm
Barometer 29.91 in (1012.8 mb)
Dewpoint 68°F (20°C)
Visibility 9.00 mi
Last update 19 Aug 6:53 am EDT
Extended Forecast for

Nantucket Memorial Airport MA

  • Today

    Today: Mostly sunny, with a high near 78. Southwest wind 6 to 13 mph.

    High: 78 °F

    Mostly Sunny

  • Tonight

    Tonight: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 69. Southwest wind 6 to 8 mph.

    Low: 69 °F

    Patchy Fog

  • Thursday

    Thursday: A slight chance of showers between 11am and 4pm. Patchy fog before 10am. Otherwise, mostly sunny, with a high near 79. Southwest wind 5 to 8 mph. Chance of precipitation is 20%.

    High: 79 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Thursday Night

    Thursday Night: A chance of showers, mainly after 11pm. Patchy fog before 9pm. Otherwise, mostly cloudy, with a low around 67. Southwest wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 67 °F

    Chance
    Showers and
    Patchy Fog

  • Friday

    Friday: A slight chance of showers before 10am, then a slight chance of showers after 2pm. Partly sunny, with a high near 76. Northeast wind 6 to 10 mph. Chance of precipitation is 20%.

    High: 76 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers, mainly after 8pm. Mostly cloudy, with a low around 65. Northeast wind around 8 mph. Chance of precipitation is 30%.

    Low: 65 °F

    Chance
    Showers

  • Saturday

    Saturday: Showers likely, mainly after 2pm. Partly sunny, with a high near 76. East wind 11 to 13 mph. Chance of precipitation is 60%.

    High: 76 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely, mainly before 3am. Mostly cloudy, with a low around 65. East wind 6 to 10 mph. Chance of precipitation is 60%.

    Low: 65 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers. Mostly cloudy, with a high near 79. East wind 7 to 11 mph becoming south in the afternoon. Chance of precipitation is 50%.

    High: 79 °F

    Chance
    Showers

Detailed Forecast

Today
Mostly sunny, with a high near 78. Southwest wind 6 to 13 mph.
Tonight
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 69. Southwest wind 6 to 8 mph.
Thursday
A slight chance of showers between 11am and 4pm. Patchy fog before 10am. Otherwise, mostly sunny, with a high near 79. Southwest wind 5 to 8 mph. Chance of precipitation is 20%.
Thursday Night
A chance of showers, mainly after 11pm. Patchy fog before 9pm. Otherwise, mostly cloudy, with a low around 67. Southwest wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A slight chance of showers before 10am, then a slight chance of showers after 2pm. Partly sunny, with a high near 76. Northeast wind 6 to 10 mph. Chance of precipitation is 20%.
Friday Night
A chance of showers, mainly after 8pm. Mostly cloudy, with a low around 65. Northeast wind around 8 mph. Chance of precipitation is 30%.
Saturday
Showers likely, mainly after 2pm. Partly sunny, with a high near 76. East wind 11 to 13 mph. Chance of precipitation is 60%.
Saturday Night
Showers likely, mainly before 3am. Mostly cloudy, with a low around 65. East wind 6 to 10 mph. Chance of precipitation is 60%.
Sunday
A chance of showers. Mostly cloudy, with a high near 79. East wind 7 to 11 mph becoming south in the afternoon. Chance of precipitation is 50%.
Sunday Night
A chance of showers before 4am. Mostly cloudy, with a low around 66. Southwest wind 7 to 9 mph. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 79. Southwest wind 9 to 13 mph.
Monday Night
Partly cloudy, with a low around 65. Southwest wind 8 to 11 mph.
Tuesday
Sunny, with a high near 78. Southwest wind 8 to 11 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Nantucket Memorial Airport MA
 41.25°N 70.09°W (Elev. 23 ft)
Last Update:
6:48 am EDT Aug 19, 2026
Forecast Valid:
7am EDT Aug 19, 2026-6pm EDT Aug 25, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation