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

28°F

-2°C

Humidity 60%
Wind Speed W 9 mph
Barometer 29.78 in (1008.5 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 24 Feb 4:53 pm EST
Extended Forecast for

2 Miles ESE Siasconset MA

  • Tonight

    Tonight: Increasing clouds, with a low around 24. West wind 9 to 15 mph.

    Low: 24 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Rain and snow, becoming all rain after 1pm, then gradually ending. High near 40. Breezy, with a south wind 13 to 21 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Breezy.
    Rain/Snow
    then Rain

  • Wednesday Night

    Wednesday Night: Mostly cloudy during the early evening, then becoming mostly clear, with a low around 32. Southwest wind 10 to 18 mph.

    Low: 32 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of rain after 2pm. Mostly sunny, with a high near 37. West wind 7 to 10 mph. Chance of precipitation is 20%.

    High: 37 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Thursday Night

    Thursday Night: A chance of snow before 10pm, then a chance of rain and snow between 10pm and 11pm, then a chance of snow after 11pm. Mostly cloudy, with a low around 29. West wind around 8 mph becoming north after midnight. Chance of precipitation is 40%. New snow accumulation of 1 to 3 inches possible.

    Low: 29 °F

    Chance
    Rain/Snow
    then Chance
    Snow

  • Friday

    Friday: A chance of snow before 9am, then a chance of rain between 9am and 2pm. Mostly sunny, with a high near 35. North wind 6 to 9 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    High: 35 °F

    Chance
    Rain/Snow
    then Slight
    Chance Rain

  • Friday Night

    Friday Night: Partly cloudy, with a low around 31. Northeast wind around 6 mph becoming south after midnight.

    Low: 31 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 40. South wind 7 to 10 mph.

    High: 40 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 32. Southwest wind around 7 mph becoming northwest after midnight.

    Low: 32 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 24. West wind 9 to 15 mph.
Wednesday
Rain and snow, becoming all rain after 1pm, then gradually ending. High near 40. Breezy, with a south wind 13 to 21 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Wednesday Night
Mostly cloudy during the early evening, then becoming mostly clear, with a low around 32. Southwest wind 10 to 18 mph.
Thursday
A slight chance of rain after 2pm. Mostly sunny, with a high near 37. West wind 7 to 10 mph. Chance of precipitation is 20%.
Thursday Night
A chance of snow before 10pm, then a chance of rain and snow between 10pm and 11pm, then a chance of snow after 11pm. Mostly cloudy, with a low around 29. West wind around 8 mph becoming north after midnight. Chance of precipitation is 40%. New snow accumulation of 1 to 3 inches possible.
Friday
A chance of snow before 9am, then a chance of rain between 9am and 2pm. Mostly sunny, with a high near 35. North wind 6 to 9 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Friday Night
Partly cloudy, with a low around 31. Northeast wind around 6 mph becoming south after midnight.
Saturday
Mostly sunny, with a high near 40. South wind 7 to 10 mph.
Saturday Night
Partly cloudy, with a low around 32. Southwest wind around 7 mph becoming northwest after midnight.
Sunday
Mostly sunny, with a high near 37. Northwest wind 8 to 11 mph.
Sunday Night
Mostly cloudy, with a low around 22. North wind 10 to 14 mph.
Monday
A chance of snow. Partly sunny, with a high near 29. North wind 11 to 14 mph. Chance of precipitation is 30%.
Monday Night
A chance of snow. Mostly cloudy, with a low around 22. Northeast wind around 11 mph. Chance of precipitation is 30%.
Tuesday
Mostly cloudy, with a high near 36. Southeast wind 11 to 13 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Siasconset MA
 41.26°N 69.97°W (Elev. 39 ft)
Last Update:
5:05 pm EST Feb 24, 2026
Forecast Valid:
5pm EST Feb 24, 2026-6pm EST Mar 3, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation