National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Nantucket, Nantucket Memorial Airport (KACK)

Lat: 41.25°NLon: 70.06°WElev: 46ft.

Overcast and Breezy

68°F

20°C

Humidity 96%
Wind Speed SW 21 G 29 mph
Barometer 29.63 in (1003.4 mb)
Dewpoint 67°F (19°C)
Visibility 7.00 mi
Last update 19 Jul 1:53 am EDT
Extended Forecast for

Nantucket MA

  • Overnight

    Overnight: Scattered showers, mainly before 5am. Cloudy, with a low around 68. Southwest wind around 17 mph. Chance of precipitation is 40%.

    Low: 68 °F

    Scattered
    Showers

  • Sunday

    Sunday: Cloudy through mid morning, then gradual clearing, with a high near 75. Northwest wind 10 to 16 mph.

    High: 75 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 62. Southwest wind around 6 mph becoming north after midnight.

    Low: 62 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 76. North wind 5 to 8 mph becoming southwest in the afternoon.

    High: 76 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 62. South wind around 7 mph.

    Low: 62 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers after 3pm. Partly sunny, with a high near 72. Southeast wind 8 to 13 mph. Chance of precipitation is 20%.

    High: 72 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely before 11pm, then showers and possibly a thunderstorm between 11pm and 2am, then showers after 2am. Low around 70. South wind 14 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 90%.

    Low: 70 °F

    Showers

  • Wednesday

    Wednesday: Showers, mainly before 2pm. High near 73. Breezy, with a southwest wind around 22 mph, with gusts as high as 32 mph. Chance of precipitation is 80%.

    High: 73 °F

    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: Showers likely, mainly between 8pm and 1am. Mostly cloudy, with a low around 68. West wind 15 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 60%.

    Low: 68 °F

    Showers
    Likely

Detailed Forecast

Overnight
Scattered showers, mainly before 5am. Cloudy, with a low around 68. Southwest wind around 17 mph. Chance of precipitation is 40%.
Sunday
Cloudy through mid morning, then gradual clearing, with a high near 75. Northwest wind 10 to 16 mph.
Sunday Night
Mostly clear, with a low around 62. Southwest wind around 6 mph becoming north after midnight.
Monday
Sunny, with a high near 76. North wind 5 to 8 mph becoming southwest in the afternoon.
Monday Night
Partly cloudy, with a low around 62. South wind around 7 mph.
Tuesday
A slight chance of showers after 3pm. Partly sunny, with a high near 72. Southeast wind 8 to 13 mph. Chance of precipitation is 20%.
Tuesday Night
Showers and thunderstorms likely before 11pm, then showers and possibly a thunderstorm between 11pm and 2am, then showers after 2am. Low around 70. South wind 14 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 90%.
Wednesday
Showers, mainly before 2pm. High near 73. Breezy, with a southwest wind around 22 mph, with gusts as high as 32 mph. Chance of precipitation is 80%.
Wednesday Night
Showers likely, mainly between 8pm and 1am. Mostly cloudy, with a low around 68. West wind 15 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 60%.
Thursday
A chance of showers. Partly sunny, with a high near 72. West wind around 13 mph. Chance of precipitation is 40%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 66. South wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 72. Northeast wind 6 to 9 mph.
Friday Night
Mostly cloudy, with a low around 67. Southeast wind around 6 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 72. Northwest wind 5 to 8 mph becoming southeast in the morning.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Nantucket MA
 41.28°N 70.09°W (Elev. 3 ft)
Last Update:
1:57 am EDT Jul 19, 2026
Forecast Valid:
2am EDT Jul 19, 2026-6pm EDT Jul 25, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation