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

49°F

9°C

Humidity 66%
Wind Speed E 10 mph
Barometer 29.82 in (1009.7 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 23 Apr 6:53 pm EDT
Extended Forecast for

3 Miles NNE Siasconset MA

  • Tonight

    Tonight: Mostly clear, with a low around 39. North wind around 6 mph.

    Low: 39 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 48. North wind 7 to 10 mph.

    High: 48 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 43. Light and variable wind becoming northeast around 5 mph after midnight.

    Low: 43 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 47. Northeast wind around 9 mph.

    High: 47 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 42. East wind 3 to 6 mph.

    Low: 42 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers, mainly after 1pm. Mostly cloudy, with a high near 48. Northeast wind around 10 mph. Chance of precipitation is 30%.

    High: 48 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers. Mostly cloudy, with a low around 45. Northeast wind 9 to 13 mph. Chance of precipitation is 30%.

    Low: 45 °F

    Chance
    Showers

  • Monday

    Monday: A chance of showers. Partly sunny, with a high near 49. Northeast wind 16 to 18 mph. Chance of precipitation is 30%.

    High: 49 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 45. Northeast wind 10 to 15 mph.

    Low: 45 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 39. North wind around 6 mph.
Friday
Sunny, with a high near 48. North wind 7 to 10 mph.
Friday Night
Partly cloudy, with a low around 43. Light and variable wind becoming northeast around 5 mph after midnight.
Saturday
Mostly sunny, with a high near 47. Northeast wind around 9 mph.
Saturday Night
Mostly cloudy, with a low around 42. East wind 3 to 6 mph.
Sunday
A chance of showers, mainly after 1pm. Mostly cloudy, with a high near 48. Northeast wind around 10 mph. Chance of precipitation is 30%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 45. Northeast wind 9 to 13 mph. Chance of precipitation is 30%.
Monday
A chance of showers. Partly sunny, with a high near 49. Northeast wind 16 to 18 mph. Chance of precipitation is 30%.
Monday Night
Mostly cloudy, with a low around 45. Northeast wind 10 to 15 mph.
Tuesday
Partly sunny, with a high near 51. East wind 11 to 14 mph.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 46. East wind around 10 mph. Chance of precipitation is 40%.
Wednesday
A chance of showers. Mostly cloudy, with a high near 52. East wind 10 to 13 mph. Chance of precipitation is 40%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 48. East wind 8 to 10 mph. Chance of precipitation is 40%.
Thursday
A chance of showers. Partly sunny, with a high near 52. East wind around 10 mph. Chance of precipitation is 30%.
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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:
2:33 pm EDT Apr 23, 2026
Forecast Valid:
7pm EDT Apr 23, 2026-6pm EDT Apr 30, 2026
 
Forecast Discussion
 
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Additional Resources

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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