National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Nantucket, Nantucket Memorial Airport (KACK)

Lat: 41.25°NLon: 70.06°WElev: 46ft.

Mostly Cloudy and Breezy

29°F

-2°C

Humidity 69%
Wind Speed N 25 G 41 mph
Barometer 29.59 in (1001.8 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill15°F (-9°C)
Last update 1 Feb 8:53 pm EST
Extended Forecast for

2 Miles ENE Siasconset MA

Coastal Flood Advisory February 1, 09:25pm until February 2, 02:00pm
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory February 1, 09:25pm until February 2, 02:00pm

    NOW until 2:00pm Mon

    Coastal Flood Advisory

  • Tonight

    Low: 22 °F

    Cloudy and
    Windy

  • Monday

    Monday: Partly sunny, with a high near 29. Northwest wind 13 to 16 mph.

    High: 29 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming clear, with a low around 23. Northwest wind 8 to 11 mph.

    Low: 23 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Sunny, with a high near 32. West wind 6 to 8 mph.

    High: 32 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 26. West wind around 6 mph.

    Low: 26 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 31. West wind 6 to 9 mph.

    High: 31 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 22. Northwest wind around 10 mph.

    Low: 22 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 29. Northwest wind 8 to 10 mph.

    High: 29 °F

    Mostly Sunny

Detailed Forecast

Tonight
Cloudy, with a low around 22. Windy, with a north wind 21 to 28 mph, with gusts as high as 38 mph.
Monday
Partly sunny, with a high near 29. Northwest wind 13 to 16 mph.
Monday Night
Mostly cloudy, then gradually becoming clear, with a low around 23. Northwest wind 8 to 11 mph.
Tuesday
Sunny, with a high near 32. West wind 6 to 8 mph.
Tuesday Night
Mostly cloudy, with a low around 26. West wind around 6 mph.
Wednesday
Partly sunny, with a high near 31. West wind 6 to 9 mph.
Wednesday Night
Partly cloudy, with a low around 22. Northwest wind around 10 mph.
Thursday
Mostly sunny, with a high near 29. Northwest wind 8 to 10 mph.
Thursday Night
Partly cloudy, with a low around 23. Northwest wind around 9 mph.
Friday
Partly sunny, with a high near 33. Southwest wind 9 to 13 mph.
Friday Night
A chance of snow. Mostly cloudy, with a low around 18. Southwest wind 11 to 14 mph. Chance of precipitation is 50%.
Saturday
A chance of snow. Mostly cloudy, with a high near 24. Blustery, with a northwest wind 16 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 50%.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 10. Blustery, with a northwest wind around 23 mph, with gusts as high as 36 mph. Chance of precipitation is 30%.
Sunday
Partly sunny, with a high near 21. Blustery, with a northwest wind 17 to 20 mph, with gusts as high as 30 mph.
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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:
5:16 pm EST Feb 1, 2026
Forecast Valid:
9pm EST Feb 1, 2026-6pm EST Feb 8, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation