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

20°F

-7°C

Humidity 52%
Wind Speed NW 14 G 22 mph
Barometer 29.91 in (1012.9 mb)
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill7°F (-14°C)
Last update 29 Jan 5:53 am EST
Extended Forecast for

3 Miles NNE Siasconset MA

  • Overnight

    Overnight: A slight chance of snow. Partly cloudy, with a low around 21. Northwest wind around 16 mph. Chance of precipitation is 20%.

    Low: 21 °F

    Slight Chance
    Snow

  • Thursday

    Thursday: A slight chance of snow before 1pm. Mostly sunny, with a high near 25. Blustery, with a northwest wind 17 to 21 mph. Chance of precipitation is 20%.

    High: 25 °F

    Slight Chance
    Snow and
    Blustery

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 14. Wind chill values as low as -1. Breezy, with a northwest wind 20 to 24 mph.

    Low: 14 °F

    Partly Cloudy
    and Breezy

  • Friday

    Friday: Mostly sunny, with a high near 19. Wind chill values as low as -3. Breezy, with a west wind 20 to 24 mph.

    High: 19 °F

    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 15. Breezy, with a west wind 13 to 20 mph.

    Low: 15 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 29. Northwest wind 7 to 10 mph.

    High: 29 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of snow after midnight. Mostly cloudy, with a low around 22. Windy, with a northeast wind 7 to 17 mph increasing to 23 to 33 mph. Chance of precipitation is 50%.

    Low: 22 °F

    Mostly Cloudy
    then Chance
    Snow and
    Windy

  • Sunday

    Sunday: Snow likely. The snow could be heavy at times. Cloudy, with a high near 33. Very windy, with a northeast wind 40 to 45 mph increasing to 45 to 50 mph in the afternoon. Winds could gust as high as 65 mph. Chance of precipitation is 70%.

    High: 33 °F

    Heavy Snow
    and Very
    Windy

  • Sunday Night

    Sunday Night: Snow likely, mainly before 1am. Cloudy, with a low around 27. Very windy, with a north wind 50 to 55 mph decreasing to 43 to 48 mph after midnight. Winds could gust as high as 65 mph. Chance of precipitation is 70%.

    Low: 27 °F

    Snow Likely
    and Very
    Windy

Detailed Forecast

Overnight
A slight chance of snow. Partly cloudy, with a low around 21. Northwest wind around 16 mph. Chance of precipitation is 20%.
Thursday
A slight chance of snow before 1pm. Mostly sunny, with a high near 25. Blustery, with a northwest wind 17 to 21 mph. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 14. Wind chill values as low as -1. Breezy, with a northwest wind 20 to 24 mph.
Friday
Mostly sunny, with a high near 19. Wind chill values as low as -3. Breezy, with a west wind 20 to 24 mph.
Friday Night
Partly cloudy, with a low around 15. Breezy, with a west wind 13 to 20 mph.
Saturday
Mostly sunny, with a high near 29. Northwest wind 7 to 10 mph.
Saturday Night
A chance of snow after midnight. Mostly cloudy, with a low around 22. Windy, with a northeast wind 7 to 17 mph increasing to 23 to 33 mph. Chance of precipitation is 50%.
Sunday
Snow likely. The snow could be heavy at times. Cloudy, with a high near 33. Very windy, with a northeast wind 40 to 45 mph increasing to 45 to 50 mph in the afternoon. Winds could gust as high as 65 mph. Chance of precipitation is 70%.
Sunday Night
Snow likely, mainly before 1am. Cloudy, with a low around 27. Very windy, with a north wind 50 to 55 mph decreasing to 43 to 48 mph after midnight. Winds could gust as high as 65 mph. Chance of precipitation is 70%.
Monday
Mostly cloudy, with a high near 33. Windy, with a northwest wind 28 to 33 mph decreasing to 18 to 23 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 28. Northwest wind 14 to 16 mph.
Tuesday
Mostly sunny, with a high near 34. West wind 11 to 14 mph.
Tuesday Night
Mostly cloudy, with a low around 27. Northwest wind 11 to 14 mph.
Wednesday
Partly sunny, with a high near 32. Northwest wind 10 to 13 mph.
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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:
3:45 am EST Jan 29, 2026
Forecast Valid:
5am EST Jan 29, 2026-6pm EST Feb 4, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation