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 and Breezy

40°F

4°C

Humidity 63%
Wind Speed NE 21 mph
Barometer 30.04 in (1017.3 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 27 Mar 3:53 pm EDT
Extended Forecast for

2 Miles ENE Siasconset MA

  • Tonight

    Tonight: Mostly cloudy, with a low around 29. Northeast wind 7 to 11 mph.

    Low: 29 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 36. North wind 10 to 14 mph.

    High: 36 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 29. Light and variable wind becoming northwest 5 to 9 mph in the evening.

    Low: 29 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 44. Northwest wind 6 to 14 mph becoming southwest in the afternoon.

    High: 44 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 38. Southwest wind around 15 mph.

    Low: 38 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 47. Southwest wind 14 to 16 mph.

    High: 47 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 44. Southwest wind 10 to 13 mph.

    Low: 44 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 51. Southwest wind 13 to 17 mph.

    High: 51 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 48. Breezy, with a southwest wind 18 to 22 mph.

    Low: 48 °F

    Mostly Cloudy
    and Breezy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 29. Northeast wind 7 to 11 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 36. North wind 10 to 14 mph.
Saturday Night
Mostly clear, with a low around 29. Light and variable wind becoming northwest 5 to 9 mph in the evening.
Sunday
Sunny, with a high near 44. Northwest wind 6 to 14 mph becoming southwest in the afternoon.
Sunday Night
Mostly cloudy, with a low around 38. Southwest wind around 15 mph.
Monday
Partly sunny, with a high near 47. Southwest wind 14 to 16 mph.
Monday Night
Mostly cloudy, with a low around 44. Southwest wind 10 to 13 mph.
Tuesday
Partly sunny, with a high near 51. Southwest wind 13 to 17 mph.
Tuesday Night
Mostly cloudy, with a low around 48. Breezy, with a southwest wind 18 to 22 mph.
Wednesday
Mostly sunny, with a high near 52. Breezy, with a southwest wind around 21 mph, with gusts as high as 31 mph.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 41. Southwest wind 16 to 18 mph becoming northwest after midnight. Chance of precipitation is 50%.
Thursday
A chance of rain. Mostly cloudy, with a high near 45. Northeast wind around 17 mph. Chance of precipitation is 40%.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 39. Northeast wind 14 to 17 mph. Chance of precipitation is 40%.
Friday
A chance of rain. Mostly cloudy, with a high near 45. East wind around 18 mph. Chance of precipitation is 50%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Siasconset MA
 41.28°N 69.97°W (Elev. 56 ft)
Last Update:
3:21 pm EDT Mar 27, 2026
Forecast Valid:
4pm EDT Mar 27, 2026-6pm EDT Apr 3, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation