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.

A Few Clouds

64°F

18°C

Humidity 81%
Wind Speed E 12 mph
Barometer 30.19 in (1022.4 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 16 Jun 9:53 am EDT
Extended Forecast for

Siasconset MA

  • Today

    Today: Partly sunny, with a high near 64. East wind 11 to 13 mph.

    High: 64 °F

    Partly Sunny

  • Tonight

    Tonight: Patchy fog between 11pm and 1am. Otherwise, mostly cloudy, with a low around 57. East wind around 10 mph.

    Low: 57 °F

    Patchy Fog

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 66. East wind around 11 mph.

    High: 66 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A slight chance of showers after 1am. Cloudy, with a low around 58. East wind 6 to 8 mph. Chance of precipitation is 20%.

    Low: 58 °F

    Cloudy then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, mainly between 9am and noon. Mostly cloudy, with a high near 69. Southwest wind 8 to 11 mph. Chance of precipitation is 30%.

    High: 69 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 61. Southwest wind around 9 mph.

    Low: 61 °F

    Mostly Cloudy

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 73. Southwest wind 10 to 14 mph.

    High: 73 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 61. West wind 11 to 14 mph.

    Low: 61 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 71. West wind 11 to 13 mph.

    High: 71 °F

    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 64. East wind 11 to 13 mph.
Tonight
Patchy fog between 11pm and 1am. Otherwise, mostly cloudy, with a low around 57. East wind around 10 mph.
Tuesday
Mostly cloudy, with a high near 66. East wind around 11 mph.
Tuesday Night
A slight chance of showers after 1am. Cloudy, with a low around 58. East wind 6 to 8 mph. Chance of precipitation is 20%.
Wednesday
A chance of showers, mainly between 9am and noon. Mostly cloudy, with a high near 69. Southwest wind 8 to 11 mph. Chance of precipitation is 30%.
Wednesday Night
Mostly cloudy, with a low around 61. Southwest wind around 9 mph.
Juneteenth
Mostly sunny, with a high near 73. Southwest wind 10 to 14 mph.
Thursday Night
Partly cloudy, with a low around 61. West wind 11 to 14 mph.
Friday
Sunny, with a high near 71. West wind 11 to 13 mph.
Friday Night
Mostly clear, with a low around 60. West wind 8 to 10 mph.
Saturday
Sunny, with a high near 70. Northwest wind 8 to 10 mph becoming southwest in the afternoon.
Saturday Night
Mostly cloudy, with a low around 61. Southwest wind around 9 mph.
Sunday
Mostly sunny, with a high near 71. Southwest wind 10 to 13 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Siasconset MA
 41.28°N 69.97°W (Elev. 56 ft)
Last Update:
4:45 am EDT Jun 16, 2025
Forecast Valid:
10am EDT Jun 16, 2025-6pm EDT Jun 22, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation