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

28°F

-2°C

Humidity 44%
Wind Speed NW 13 mph
Barometer 30.27 in (1024.9 mb)
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill17°F (-8°C)
Last update 18 Mar 5:53 am EDT
Extended Forecast for

3 Miles NNE Siasconset MA

  • Today

    Today: Mostly sunny, with a high near 32. Northwest wind 5 to 15 mph becoming northeast in the afternoon.

    High: 32 °F

    Mostly Sunny

  • Tonight

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

    Low: 31 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 36. East wind around 9 mph.

    High: 36 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 35. Southeast wind around 5 mph becoming light and variable.

    Low: 35 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 43. Southwest wind 7 to 9 mph.

    High: 43 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 40. Southwest wind 9 to 11 mph.

    Low: 40 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of rain between 8am and 5pm. Mostly cloudy, with a high near 46. Breezy, with a south wind 14 to 20 mph. Chance of precipitation is 40%.

    High: 46 °F

    Chance Rain
    and Breezy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 41. Southwest wind around 15 mph.

    Low: 41 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain after 10am. Mostly cloudy, with a high near 46. Southwest wind around 16 mph. Chance of precipitation is 30%.

    High: 46 °F

    Chance Rain

Detailed Forecast

Today
Mostly sunny, with a high near 32. Northwest wind 5 to 15 mph becoming northeast in the afternoon.
Tonight
Partly cloudy, with a low around 31. Light southeast wind.
Thursday
Mostly sunny, with a high near 36. East wind around 9 mph.
Thursday Night
Mostly clear, with a low around 35. Southeast wind around 5 mph becoming light and variable.
Friday
Mostly sunny, with a high near 43. Southwest wind 7 to 9 mph.
Friday Night
Mostly cloudy, with a low around 40. Southwest wind 9 to 11 mph.
Saturday
A chance of rain between 8am and 5pm. Mostly cloudy, with a high near 46. Breezy, with a south wind 14 to 20 mph. Chance of precipitation is 40%.
Saturday Night
Mostly cloudy, with a low around 41. Southwest wind around 15 mph.
Sunday
A chance of rain after 10am. Mostly cloudy, with a high near 46. Southwest wind around 16 mph. Chance of precipitation is 30%.
Sunday Night
A chance of rain before 3am. Mostly cloudy, with a low around 36. Breezy, with a northwest wind 16 to 25 mph. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 41. Breezy, with a north wind 18 to 22 mph.
Monday Night
Mostly clear, with a low around 33. Breezy, with a north wind 20 to 24 mph.
Tuesday
Sunny, with a high near 40. North wind 10 to 16 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:
3:06 am EDT Mar 18, 2026
Forecast Valid:
6am EDT Mar 18, 2026-6pm EDT Mar 24, 2026
 
Forecast Discussion
 
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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