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.

Windy

41°F

5°C

Humidity 51%
Wind Speed W 29 G 38 mph
Barometer 29.77 in (1008.0 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 17 Mar 2:53 pm EDT
Extended Forecast for

3 Miles NNE Siasconset MA

  • Tonight

    Tonight: Partly cloudy, with a low around 28. Breezy, with a northwest wind 17 to 22 mph.

    Low: 28 °F

    Partly Cloudy
    and Breezy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 34. Northwest wind 5 to 13 mph becoming northeast in the afternoon.

    High: 34 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 31. Light southeast wind.

    Low: 31 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 38. Southeast wind 5 to 7 mph.

    High: 38 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 36. Southeast wind around 6 mph.

    Low: 36 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 41. Southwest wind around 8 mph.

    High: 41 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 38. Southwest wind 7 to 9 mph.

    Low: 38 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 44. South wind 11 to 16 mph.

    High: 44 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of rain. Mostly cloudy, with a low around 38. Breezy, with a southwest wind 16 to 20 mph. Chance of precipitation is 30%.

    Low: 38 °F

    Chance Rain
    and Breezy

Detailed Forecast

Tonight
Partly cloudy, with a low around 28. Breezy, with a northwest wind 17 to 22 mph.
Wednesday
Mostly sunny, with a high near 34. Northwest wind 5 to 13 mph becoming northeast in the afternoon.
Wednesday Night
Partly cloudy, with a low around 31. Light southeast wind.
Thursday
Mostly sunny, with a high near 38. Southeast wind 5 to 7 mph.
Thursday Night
Partly cloudy, with a low around 36. Southeast wind around 6 mph.
Friday
Mostly sunny, with a high near 41. Southwest wind around 8 mph.
Friday Night
Partly cloudy, with a low around 38. Southwest wind 7 to 9 mph.
Saturday
Partly sunny, with a high near 44. South wind 11 to 16 mph.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 38. Breezy, with a southwest wind 16 to 20 mph. Chance of precipitation is 30%.
Sunday
A chance of rain before noon. Partly sunny, with a high near 45. Southwest wind around 18 mph. Chance of precipitation is 30%.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 36. Breezy, with a southwest wind 17 to 21 mph. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 43. Breezy, with a northwest wind around 21 mph.
Monday Night
Partly cloudy, with a low around 31. Blustery, with a north wind around 21 mph.
Tuesday
Sunny, with a high near 39. North wind 13 to 17 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:
1:46 pm EDT Mar 17, 2026
Forecast Valid:
3pm EDT Mar 17, 2026-6pm EDT Mar 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation