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.

Partly Cloudy

49°F

9°C

Humidity 56%
Wind Speed SW 15 mph
Barometer 30.13 in (1020.3 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 20 Apr 3:53 pm EDT
Extended Forecast for

2 Miles ENE Siasconset MA

  • Tonight

    Tonight: A slight chance of showers between 9pm and 3am. Mostly cloudy, with a low around 38. Northwest wind 6 to 10 mph becoming north after midnight. Chance of precipitation is 20%.

    Low: 38 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 45. North wind 7 to 11 mph.

    High: 45 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 39. Southwest wind 3 to 6 mph.

    Low: 39 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers, mainly after 11am. Mostly cloudy, with a high near 48. South wind 8 to 13 mph. Chance of precipitation is 30%.

    High: 48 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers before 10pm. Mostly cloudy, with a low around 42. Southeast wind 6 to 8 mph. Chance of precipitation is 20%.

    Low: 42 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 52. North wind 6 to 9 mph.

    High: 52 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 42. North wind 5 to 7 mph.

    Low: 42 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 49. North wind around 8 mph.

    High: 49 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 42. South wind around 6 mph becoming northwest after midnight.

    Low: 42 °F

    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of showers between 9pm and 3am. Mostly cloudy, with a low around 38. Northwest wind 6 to 10 mph becoming north after midnight. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 45. North wind 7 to 11 mph.
Tuesday Night
Partly cloudy, with a low around 39. Southwest wind 3 to 6 mph.
Wednesday
A chance of showers, mainly after 11am. Mostly cloudy, with a high near 48. South wind 8 to 13 mph. Chance of precipitation is 30%.
Wednesday Night
A slight chance of showers before 10pm. Mostly cloudy, with a low around 42. Southeast wind 6 to 8 mph. Chance of precipitation is 20%.
Thursday
Partly sunny, with a high near 52. North wind 6 to 9 mph.
Thursday Night
Partly cloudy, with a low around 42. North wind 5 to 7 mph.
Friday
Mostly sunny, with a high near 49. North wind around 8 mph.
Friday Night
Partly cloudy, with a low around 42. South wind around 6 mph becoming northwest after midnight.
Saturday
Mostly sunny, with a high near 49. East wind 7 to 9 mph.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 42. East wind around 7 mph. Chance of precipitation is 30%.
Sunday
A chance of showers. Partly sunny, with a high near 50. East wind around 10 mph. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 44. Northeast wind around 8 mph.
Monday
Mostly sunny, with a high near 52. Northeast wind around 9 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Siasconset MA
 41.28°N 69.97°W (Elev. 56 ft)
Last Update:
4:01 pm EDT Apr 20, 2026
Forecast Valid:
4pm EDT Apr 20, 2026-6pm EDT Apr 27, 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