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

73°F

23°C

Humidity 94%
Wind Speed S 8 mph
Barometer 30.09 in (1018.7 mb)
Dewpoint 71°F (22°C)
Visibility 5.00 mi
Last update 15 Jul 11:53 am EDT
Extended Forecast for

3 Miles NNE Siasconset MA

  • This Afternoon

    This Afternoon: Patchy fog before 3pm. Otherwise, partly sunny, with a high near 76. South wind around 10 mph.

    High: 76 °F

    Patchy Fog

  • Tonight

    Tonight: Patchy fog after 7pm. Otherwise, mostly cloudy, with a low around 70. Southwest wind around 9 mph.

    Low: 70 °F

    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 10am. Otherwise, partly sunny, with a high near 78. Southwest wind 8 to 13 mph.

    High: 78 °F

    Patchy Fog
    then Mostly
    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 around 14 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 78. Southwest wind 15 to 17 mph. Chance of precipitation is 20%.

    High: 78 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: A slight chance of showers between 11pm and midnight. Partly cloudy, with a low around 72. Southwest wind around 17 mph. Chance of precipitation is 20%.

    Low: 72 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 79. West wind around 14 mph.

    High: 79 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 68. North wind 8 to 10 mph.

    Low: 68 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 74. Northeast wind 9 to 11 mph.

    High: 74 °F

    Sunny

Detailed Forecast

This Afternoon
Patchy fog before 3pm. Otherwise, partly sunny, with a high near 76. South wind around 10 mph.
Tonight
Patchy fog after 7pm. Otherwise, mostly cloudy, with a low around 70. Southwest wind around 9 mph.
Wednesday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 78. Southwest wind 8 to 13 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 around 14 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 78. Southwest wind 15 to 17 mph. Chance of precipitation is 20%.
Thursday Night
A slight chance of showers between 11pm and midnight. Partly cloudy, with a low around 72. Southwest wind around 17 mph. Chance of precipitation is 20%.
Friday
Sunny, with a high near 79. West wind around 14 mph.
Friday Night
Mostly cloudy, with a low around 68. North wind 8 to 10 mph.
Saturday
Sunny, with a high near 74. Northeast wind 9 to 11 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 76. South wind 9 to 11 mph.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 69. South wind 11 to 13 mph. Chance of precipitation is 40%.
Monday
A chance of showers. Mostly sunny, with a high near 76. West wind around 15 mph becoming south in the afternoon. Chance of precipitation is 30%.
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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:
7:45 am EDT Jul 15, 2025
Forecast Valid:
12pm EDT Jul 15, 2025-6pm EDT Jul 21, 2025
 
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Additional Resources

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Chance of Precipitation