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

67°F

19°C

Humidity 100%
Wind Speed S 7 mph
Barometer 30.07 in (1018.1 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 15 Jul 2:53 am EDT
Extended Forecast for

5 Miles W Nantucket MA

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly cloudy, with a low around 69. Southwest wind around 9 mph.

    Low: 69 °F

    Patchy Fog

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 11am, then a slight chance of showers between 11am and noon. Patchy fog. Otherwise, mostly cloudy, with a high near 78. Southwest wind 9 to 11 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Chance
    Showers and
    Patchy Fog
    then Patchy
    Fog

  • Tuesday Night

    Tuesday Night: Patchy fog. Otherwise, mostly cloudy, with a low around 70. Southwest wind 7 to 10 mph.

    Low: 70 °F

    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 11am. Otherwise, partly sunny, with a high near 80. Southwest wind 8 to 11 mph.

    High: 80 °F

    Patchy Fog
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of showers between 3am and 5am, then a slight chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 71. Southwest wind 11 to 13 mph. Chance of precipitation is 20%.

    Low: 71 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Thursday

    Thursday: A slight chance of showers and thunderstorms before 11am, then a slight chance of showers between 11am and 3pm. Partly sunny, with a high near 80. Southwest wind 14 to 16 mph. Chance of precipitation is 20%.

    High: 80 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 72. Southwest wind around 16 mph.

    Low: 72 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 81. West wind 11 to 13 mph.

    High: 81 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 68. North wind 7 to 9 mph.

    Low: 68 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 69. Southwest wind around 9 mph.
Tuesday
A chance of showers and thunderstorms before 11am, then a slight chance of showers between 11am and noon. Patchy fog. Otherwise, mostly cloudy, with a high near 78. Southwest wind 9 to 11 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 70. Southwest wind 7 to 10 mph.
Wednesday
Patchy fog before 11am. Otherwise, partly sunny, with a high near 80. Southwest wind 8 to 11 mph.
Wednesday Night
A slight chance of showers between 3am and 5am, then a slight chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 71. Southwest wind 11 to 13 mph. Chance of precipitation is 20%.
Thursday
A slight chance of showers and thunderstorms before 11am, then a slight chance of showers between 11am and 3pm. Partly sunny, with a high near 80. Southwest wind 14 to 16 mph. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 72. Southwest wind around 16 mph.
Friday
Mostly sunny, with a high near 81. West wind 11 to 13 mph.
Friday Night
Mostly cloudy, with a low around 68. North wind 7 to 9 mph.
Saturday
Sunny, with a high near 77. Northeast wind around 10 mph.
Saturday Night
Partly cloudy, with a low around 68. East wind around 7 mph becoming southwest after midnight.
Sunday
Partly sunny, with a high near 78. South wind 7 to 11 mph.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 68. South wind around 10 mph. Chance of precipitation is 40%.
Monday
A chance of showers. Mostly sunny, with a high near 78. South wind 11 to 13 mph. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles W Nantucket MA
 41.29°N 70.2°W (Elev. 0 ft)
Last Update:
1:16 am EDT Jul 15, 2025
Forecast Valid:
3am EDT Jul 15, 2025-6pm EDT Jul 21, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation