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.

A Few Clouds

30°F

-1°C

Humidity 61%
Wind Speed Calm
Barometer 29.88 in (1011.8 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Last update 12 Feb 5:53 pm EST
Extended Forecast for

3 Miles NNE Siasconset MA

  • Tonight

    Tonight: Partly cloudy, with a low around 25. Northwest wind 15 to 17 mph.

    Low: 25 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 33. Northwest wind 9 to 14 mph.

    High: 33 °F

    Sunny

  • Friday Night

    Friday Night: A chance of flurries after 3am. Partly cloudy, with a low around 29. West wind 10 to 13 mph.

    Low: 29 °F

    Chance
    Flurries

  • Saturday

    Saturday: A chance of flurries before 10am. Mostly sunny, with a high near 36. West wind around 13 mph.

    High: 36 °F

    Chance
    Flurries

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 27. West wind 10 to 14 mph.

    Low: 27 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 34. Northwest wind 7 to 14 mph.

    High: 34 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 31. East wind 6 to 8 mph.

    Low: 31 °F

    Mostly Cloudy

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 37. East wind around 11 mph.

    High: 37 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 35. East wind around 9 mph.

    Low: 35 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 25. Northwest wind 15 to 17 mph.
Friday
Sunny, with a high near 33. Northwest wind 9 to 14 mph.
Friday Night
A chance of flurries after 3am. Partly cloudy, with a low around 29. West wind 10 to 13 mph.
Saturday
A chance of flurries before 10am. Mostly sunny, with a high near 36. West wind around 13 mph.
Saturday Night
Partly cloudy, with a low around 27. West wind 10 to 14 mph.
Sunday
Mostly sunny, with a high near 34. Northwest wind 7 to 14 mph.
Sunday Night
Mostly cloudy, with a low around 31. East wind 6 to 8 mph.
Washington's Birthday
Mostly sunny, with a high near 37. East wind around 11 mph.
Monday Night
Partly cloudy, with a low around 35. East wind around 9 mph.
Tuesday
Partly sunny, with a high near 39. Southeast wind around 10 mph becoming southwest in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 35. Southwest wind around 9 mph.
Wednesday
A chance of rain. Mostly cloudy, with a high near 41. South wind 9 to 11 mph. Chance of precipitation is 40%.
Wednesday Night
Rain likely. Cloudy, with a low around 35. South wind 11 to 15 mph becoming northwest after midnight. Chance of precipitation is 60%.
Thursday
A chance of rain. Mostly cloudy, with a high near 38. Northwest wind around 17 mph. Chance of precipitation is 40%.
Basemap Options
Click map to change the forecast location
Loading map...
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:
1:07 pm EST Feb 12, 2026
Forecast Valid:
6pm EST Feb 12, 2026-6pm EST Feb 19, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation