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.

Mostly Cloudy and Breezy

38°F

3°C

Humidity 73%
Wind Speed SW 22 G 30 mph
Barometer 30.33 in (1027.1 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 25 Mar 1:53 am EDT
Extended Forecast for

3 Miles NNE Siasconset MA

  • Overnight

    Overnight: Mostly cloudy, with a low around 37. Southwest wind around 16 mph.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 44. West wind 10 to 13 mph.

    High: 44 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Cloudy, with a low around 41. South wind around 11 mph, with gusts as high as 21 mph.

    Low: 41 °F

    Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 49. Breezy, with a southwest wind 15 to 22 mph.

    High: 49 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Thursday Night

    Thursday Night: A chance of rain, mainly after 2am. Cloudy, with a low around 42. Windy, with a southwest wind 23 to 26 mph. Chance of precipitation is 50%.

    Low: 42 °F

    Slight Chance
    Rain and
    Breezy then
    Chance Rain
    and Windy

  • Friday

    Friday: Rain likely, mainly before noon. Mostly cloudy, with a high near 48. Breezy, with a southwest wind 18 to 20 mph becoming north in the afternoon. Chance of precipitation is 60%.

    High: 48 °F

    Rain Likely
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 30. North wind 13 to 17 mph.

    Low: 30 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 36. North wind 7 to 13 mph.

    High: 36 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 32. West wind 5 to 14 mph.

    Low: 32 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 37. Southwest wind around 16 mph.
Wednesday
Mostly sunny, with a high near 44. West wind 10 to 13 mph.
Wednesday Night
Cloudy, with a low around 41. South wind around 11 mph, with gusts as high as 21 mph.
Thursday
Mostly cloudy, with a high near 49. Breezy, with a southwest wind 15 to 22 mph.
Thursday Night
A chance of rain, mainly after 2am. Cloudy, with a low around 42. Windy, with a southwest wind 23 to 26 mph. Chance of precipitation is 50%.
Friday
Rain likely, mainly before noon. Mostly cloudy, with a high near 48. Breezy, with a southwest wind 18 to 20 mph becoming north in the afternoon. Chance of precipitation is 60%.
Friday Night
Mostly cloudy, with a low around 30. North wind 13 to 17 mph.
Saturday
Partly sunny, with a high near 36. North wind 7 to 13 mph.
Saturday Night
Mostly clear, with a low around 32. West wind 5 to 14 mph.
Sunday
Sunny, with a high near 42. West wind 13 to 16 mph.
Sunday Night
Partly cloudy, with a low around 37. Southwest wind around 13 mph.
Monday
Partly sunny, with a high near 46. Breezy, with a southwest wind 15 to 20 mph.
Monday Night
Mostly cloudy, with a low around 37. Breezy, with a southwest wind 20 to 22 mph.
Tuesday
Mostly sunny, with a high near 43. Breezy, with a west wind 15 to 20 mph.
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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:
11:57 pm EDT Mar 24, 2026
Forecast Valid:
2am EDT Mar 25, 2026-6pm EDT Mar 31, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation