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

72°F

22°C

Humidity 57%
Wind Speed SW 9 mph
Barometer NA
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 4 Oct 12:53 pm EDT
Extended Forecast for

4 Miles N Siasconset MA

  • This Afternoon

    This Afternoon: Sunny, with a high near 68. West wind around 8 mph.

    High: 68 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 63. Southwest wind 6 to 8 mph.

    Low: 63 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 69. Southwest wind 5 to 7 mph.

    High: 69 °F

    Sunny

  • Sunday Night

    Sunday Night: Patchy fog after midnight. Otherwise, mostly clear, with a low around 63. Southwest wind around 9 mph.

    Low: 63 °F

    Mostly Clear
    then Patchy
    Fog

  • Monday

    Monday: Sunny, with a high near 70. Southwest wind 8 to 11 mph.

    High: 70 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 64. Southwest wind around 11 mph.

    Low: 64 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 69. Southwest wind 13 to 16 mph.

    High: 69 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers after 1am. Mostly cloudy, with a low around 62. Southwest wind around 17 mph. Chance of precipitation is 40%.

    Low: 62 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: Showers. High near 69. Southwest wind around 18 mph becoming northwest in the afternoon. Chance of precipitation is 90%.

    High: 69 °F

    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 68. West wind around 8 mph.
Tonight
Mostly clear, with a low around 63. Southwest wind 6 to 8 mph.
Sunday
Sunny, with a high near 69. Southwest wind 5 to 7 mph.
Sunday Night
Patchy fog after midnight. Otherwise, mostly clear, with a low around 63. Southwest wind around 9 mph.
Monday
Sunny, with a high near 70. Southwest wind 8 to 11 mph.
Monday Night
Mostly clear, with a low around 64. Southwest wind around 11 mph.
Tuesday
Mostly sunny, with a high near 69. Southwest wind 13 to 16 mph.
Tuesday Night
A chance of showers after 1am. Mostly cloudy, with a low around 62. Southwest wind around 17 mph. Chance of precipitation is 40%.
Wednesday
Showers. High near 69. Southwest wind around 18 mph becoming northwest in the afternoon. Chance of precipitation is 90%.
Wednesday Night
Showers likely, mainly before 10pm. Mostly cloudy, with a low around 54. Breezy, with a north wind 16 to 23 mph. Chance of precipitation is 60%.
Thursday
Sunny, with a high near 58. Breezy, with a north wind 17 to 22 mph.
Thursday Night
Mostly clear, with a low around 54. Northeast wind 10 to 14 mph.
Friday
Sunny, with a high near 63. Northeast wind around 10 mph becoming south in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Siasconset MA
 41.33°N 69.98°W (Elev. 0 ft)
Last Update:
12:23 pm EDT Oct 4, 2025
Forecast Valid:
1pm EDT Oct 4, 2025-6pm EDT Oct 10, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation