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

48°F

9°C

Humidity 34%
Wind Speed Calm
Barometer 30.52 in (1033.6 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Last update 12 Apr 11:53 am EDT
Extended Forecast for

3 Miles NNE Siasconset MA

  • This Afternoon

    This Afternoon: Increasing clouds, with a high near 46. East wind around 6 mph.

    High: 46 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Isolated showers between 2am and 3am. Mostly cloudy, with a low around 42. South wind 11 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.

    Low: 42 °F

    Mostly Cloudy
    then Isolated
    Showers

  • Monday

    Monday: Patchy fog after 4pm. Otherwise, mostly cloudy, with a high near 52. Windy, with a southwest wind 23 to 26 mph, with gusts as high as 37 mph.

    High: 52 °F

    Windy. Mostly
    Cloudy then
    Patchy Fog

  • Monday Night

    Monday Night: Isolated showers before 2am. Patchy fog before 9pm. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 48. Breezy, with a southwest wind 16 to 23 mph. Chance of precipitation is 20%.

    Low: 48 °F

    Isolated
    Showers and
    Patchy Fog

  • Tuesday

    Tuesday: Mostly sunny, with a high near 53. Southwest wind 9 to 11 mph.

    High: 53 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 49. Southwest wind around 14 mph.

    Low: 49 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 54. Southwest wind around 11 mph.

    High: 54 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers after 11pm. Mostly cloudy, with a low around 48. Southwest wind 8 to 10 mph. Chance of precipitation is 30%.

    Low: 48 °F

    Chance
    Showers

  • Thursday

    Thursday: Mostly cloudy, with a high near 53. Southwest wind around 11 mph.

    High: 53 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Increasing clouds, with a high near 46. East wind around 6 mph.
Tonight
Isolated showers between 2am and 3am. Mostly cloudy, with a low around 42. South wind 11 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.
Monday
Patchy fog after 4pm. Otherwise, mostly cloudy, with a high near 52. Windy, with a southwest wind 23 to 26 mph, with gusts as high as 37 mph.
Monday Night
Isolated showers before 2am. Patchy fog before 9pm. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 48. Breezy, with a southwest wind 16 to 23 mph. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 53. Southwest wind 9 to 11 mph.
Tuesday Night
Mostly cloudy, with a low around 49. Southwest wind around 14 mph.
Wednesday
Mostly sunny, with a high near 54. Southwest wind around 11 mph.
Wednesday Night
A chance of showers after 11pm. Mostly cloudy, with a low around 48. Southwest wind 8 to 10 mph. Chance of precipitation is 30%.
Thursday
Mostly cloudy, with a high near 53. Southwest wind around 11 mph.
Thursday Night
Mostly cloudy, with a low around 49. Southwest wind around 14 mph.
Friday
Partly sunny, with a high near 55. Southwest wind 9 to 11 mph.
Friday Night
Mostly cloudy, with a low around 47. West wind around 7 mph becoming northeast after midnight.
Saturday
Partly sunny, with a high near 52. Northeast wind 7 to 9 mph becoming southeast in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Siasconset MA
 41.33°N 69.98°W (Elev. 0 ft)
Last Update:
4:12 am EDT Apr 12, 2026
Forecast Valid:
12pm EDT Apr 12, 2026-6pm EDT Apr 18, 2026
 
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