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

50°F

10°C

Humidity 41%
Wind Speed NW 10 mph
Barometer 30.14 in (1020.7 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 20 Apr 9:53 am EDT
Extended Forecast for

3 Miles NNE Siasconset MA

  • Today

    Today: Sunny, with a high near 49. West wind 10 to 14 mph.

    High: 49 °F

    Sunny

  • Tonight

    Tonight: A slight chance of rain before 3am. Mostly cloudy, with a low around 37. West wind 8 to 17 mph becoming north after midnight. Chance of precipitation is 20%.

    Low: 37 °F

    Slight Chance
    Rain

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 45. North wind 7 to 13 mph.

    High: 45 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 41. Light and variable wind becoming southwest 5 to 7 mph in the evening.

    Low: 41 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers. Mostly cloudy, with a high near 48. South wind 9 to 14 mph. Chance of precipitation is 20%.

    High: 48 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 44. East wind 7 to 9 mph.

    Low: 44 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 50. North wind around 7 mph.

    High: 50 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 44. West wind 5 to 7 mph.

    Low: 44 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 49. North wind 8 to 10 mph.

    High: 49 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 49. West wind 10 to 14 mph.
Tonight
A slight chance of rain before 3am. Mostly cloudy, with a low around 37. West wind 8 to 17 mph becoming north after midnight. Chance of precipitation is 20%.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 45. North wind 7 to 13 mph.
Tuesday Night
Partly cloudy, with a low around 41. Light and variable wind becoming southwest 5 to 7 mph in the evening.
Wednesday
A slight chance of showers. Mostly cloudy, with a high near 48. South wind 9 to 14 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 44. East wind 7 to 9 mph.
Thursday
Partly sunny, with a high near 50. North wind around 7 mph.
Thursday Night
Mostly cloudy, with a low around 44. West wind 5 to 7 mph.
Friday
Mostly sunny, with a high near 49. North wind 8 to 10 mph.
Friday Night
Partly cloudy, with a low around 44. North wind around 6 mph.
Saturday
Mostly sunny, with a high near 48. Northeast wind around 9 mph.
Saturday Night
Mostly cloudy, with a low around 44. East wind around 6 mph.
Sunday
A chance of showers. Partly sunny, with a high near 50. East wind around 9 mph. Chance of precipitation is 30%.
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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:
2:29 am EDT Apr 20, 2026
Forecast Valid:
10am EDT Apr 20, 2026-6pm EDT Apr 26, 2026
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation