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.

Mostly Cloudy

41°F

5°C

Humidity 93%
Wind Speed S 17 mph
Barometer 29.99 in (1015.6 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 22 Jan 6:53 am EST
Extended Forecast for

2 Miles ENE Siasconset MA

  • Today

    Today: Mostly sunny, with a high near 43. West wind 15 to 17 mph.

    High: 43 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 30. West wind around 14 mph.

    Low: 30 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 36. West wind 13 to 18 mph, with gusts as high as 30 mph.

    High: 36 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 12. Wind chill values as low as -3. Breezy, with a northwest wind around 21 mph, with gusts as high as 32 mph.

    Low: 12 °F

    Mostly Cloudy
    and Breezy

  • Saturday

    Saturday: Mostly sunny, with a high near 19. Northwest wind 13 to 18 mph, with gusts as high as 29 mph.

    High: 19 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of snow, mainly after 5am. Mostly cloudy, with a low around 15. Northwest wind 8 to 11 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 15 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday

    Sunday: Snow, mainly after 9am. The snow could be heavy at times. High near 31. North wind 7 to 15 mph becoming east in the afternoon. Chance of precipitation is 90%.

    High: 31 °F

    Heavy Snow

  • Sunday Night

    Sunday Night: Snow. Low around 26. East wind 16 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 90%.

    Low: 26 °F

    Snow

  • Monday

    Monday: Snow likely before 9am, then snow likely, possibly mixed with rain between 9am and 10am, then a chance of snow after 10am. Mostly cloudy, with a high near 33. Northeast wind 14 to 16 mph becoming northwest in the afternoon. Chance of precipitation is 60%.

    High: 33 °F

    Rain/Snow
    Likely then
    Chance Snow

Detailed Forecast

Today
Mostly sunny, with a high near 43. West wind 15 to 17 mph.
Tonight
Partly cloudy, with a low around 30. West wind around 14 mph.
Friday
Mostly sunny, with a high near 36. West wind 13 to 18 mph, with gusts as high as 30 mph.
Friday Night
Mostly cloudy, with a low around 12. Wind chill values as low as -3. Breezy, with a northwest wind around 21 mph, with gusts as high as 32 mph.
Saturday
Mostly sunny, with a high near 19. Northwest wind 13 to 18 mph, with gusts as high as 29 mph.
Saturday Night
A chance of snow, mainly after 5am. Mostly cloudy, with a low around 15. Northwest wind 8 to 11 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Sunday
Snow, mainly after 9am. The snow could be heavy at times. High near 31. North wind 7 to 15 mph becoming east in the afternoon. Chance of precipitation is 90%.
Sunday Night
Snow. Low around 26. East wind 16 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 90%.
Monday
Snow likely before 9am, then snow likely, possibly mixed with rain between 9am and 10am, then a chance of snow after 10am. Mostly cloudy, with a high near 33. Northeast wind 14 to 16 mph becoming northwest in the afternoon. Chance of precipitation is 60%.
Monday Night
A chance of snow before 4am. Mostly cloudy, with a low around 18. Northwest wind around 18 mph, with gusts as high as 28 mph. Chance of precipitation is 40%.
Tuesday
Mostly sunny, with a high near 28. West wind around 17 mph.
Tuesday Night
Partly cloudy, with a low around 20. West wind 14 to 17 mph.
Wednesday
Mostly sunny, with a high near 29. West wind 11 to 14 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:
5:46 am EST Jan 22, 2026
Forecast Valid:
7am EST Jan 22, 2026-6pm EST Jan 28, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation