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

48°F

9°C

Humidity 86%
Wind Speed SW 10 mph
Barometer 30.12 in (1020.0 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 13 May 3:53 am EDT
Extended Forecast for

3 Miles NNW Siasconset MA

  • Today

    Today: Partly sunny, with a high near 61. South wind 9 to 16 mph.

    High: 61 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 53. South wind around 14 mph.

    Low: 53 °F

    Mostly Cloudy

  • Thursday

    Thursday: Showers, mainly after 10am. Patchy fog after 5pm. High near 61. East wind 13 to 15 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 61 °F

    Showers and
    Patchy Fog

  • Thursday Night

    Thursday Night: Showers, mainly before 5am. Patchy fog before 9pm. Low around 50. East wind 6 to 9 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 50 °F

    Showers and
    Patchy Fog

  • Friday

    Friday: Showers likely, mainly before noon. Mostly cloudy, with a high near 58. North wind 6 to 10 mph. Chance of precipitation is 60%.

    High: 58 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 51. Northwest wind 7 to 9 mph.

    Low: 51 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 65. Southwest wind 10 to 16 mph.

    High: 65 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 54. Southwest wind around 15 mph.

    Low: 54 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 68. Southwest wind 11 to 13 mph.

    High: 68 °F

    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 61. South wind 9 to 16 mph.
Tonight
Mostly cloudy, with a low around 53. South wind around 14 mph.
Thursday
Showers, mainly after 10am. Patchy fog after 5pm. High near 61. East wind 13 to 15 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday Night
Showers, mainly before 5am. Patchy fog before 9pm. Low around 50. East wind 6 to 9 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Showers likely, mainly before noon. Mostly cloudy, with a high near 58. North wind 6 to 10 mph. Chance of precipitation is 60%.
Friday Night
Mostly cloudy, with a low around 51. Northwest wind 7 to 9 mph.
Saturday
Sunny, with a high near 65. Southwest wind 10 to 16 mph.
Saturday Night
Partly cloudy, with a low around 54. Southwest wind around 15 mph.
Sunday
Sunny, with a high near 68. Southwest wind 11 to 13 mph.
Sunday Night
Partly cloudy, with a low around 54. Southwest wind 6 to 8 mph.
Monday
Mostly sunny, with a high near 65. East wind 5 to 7 mph.
Monday Night
Mostly cloudy, with a low around 54. South wind around 7 mph.
Tuesday
Partly sunny, with a high near 67. Southwest wind 7 to 14 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Siasconset MA
 41.31°N 70.02°W (Elev. 13 ft)
Last Update:
12:35 am EDT May 13, 2026
Forecast Valid:
4am EDT May 13, 2026-6pm EDT May 19, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation