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

39°F

4°C

Humidity 76%
Wind Speed N 18 mph
Barometer 30.03 in (1017.0 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 1 Mar 7:53 am EST
Extended Forecast for

2 Miles ENE Siasconset MA

  • Today

    Today: A chance of snow, mainly after 3pm. Mostly sunny through mid morning, then becoming cloudy, with a high near 37. Breezy, with a north wind 9 to 14 mph increasing to 19 to 24 mph in the afternoon. Chance of precipitation is 40%. Total daytime snow accumulation of less than one inch possible.

    High: 37 °F

    Partly Sunny
    then Chance
    Snow and
    Breezy

  • Tonight

    Tonight: Cloudy during the early evening, then gradual clearing, with a low around 20. Blustery, with a north wind 15 to 22 mph.

    Low: 20 °F

    Gradual
    Clearing and
    Blustery

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 27. Northwest wind 5 to 13 mph.

    High: 27 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Mostly clear, with a low around 19. Calm wind becoming south around 6 mph after midnight.

    Low: 19 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of rain, mainly after 1pm. Partly sunny, with a high near 41. South wind 9 to 13 mph. Chance of precipitation is 40%.

    High: 41 °F

    Mostly Sunny
    then Chance
    Rain

  • Tuesday Night

    Tuesday Night: Rain. Low around 36. South wind 10 to 13 mph becoming southwest after midnight. Chance of precipitation is 100%.

    Low: 36 °F

    Rain

  • Wednesday

    Wednesday: Rain likely, mainly before 9am. Partly sunny, with a high near 41. West wind 6 to 11 mph becoming east in the afternoon. Chance of precipitation is 70%.

    High: 41 °F

    Rain Likely
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: A chance of rain after 2am. Mostly cloudy, with a low around 36. South wind 5 to 7 mph. Chance of precipitation is 30%.

    Low: 36 °F

    Partly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: A chance of rain. Cloudy, with a high near 43. Southwest wind 8 to 11 mph. Chance of precipitation is 30%.

    High: 43 °F

    Chance Rain

Detailed Forecast

Today
A chance of snow, mainly after 3pm. Mostly sunny through mid morning, then becoming cloudy, with a high near 37. Breezy, with a north wind 9 to 14 mph increasing to 19 to 24 mph in the afternoon. Chance of precipitation is 40%. Total daytime snow accumulation of less than one inch possible.
Tonight
Cloudy during the early evening, then gradual clearing, with a low around 20. Blustery, with a north wind 15 to 22 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 27. Northwest wind 5 to 13 mph.
Monday Night
Mostly clear, with a low around 19. Calm wind becoming south around 6 mph after midnight.
Tuesday
A chance of rain, mainly after 1pm. Partly sunny, with a high near 41. South wind 9 to 13 mph. Chance of precipitation is 40%.
Tuesday Night
Rain. Low around 36. South wind 10 to 13 mph becoming southwest after midnight. Chance of precipitation is 100%.
Wednesday
Rain likely, mainly before 9am. Partly sunny, with a high near 41. West wind 6 to 11 mph becoming east in the afternoon. Chance of precipitation is 70%.
Wednesday Night
A chance of rain after 2am. Mostly cloudy, with a low around 36. South wind 5 to 7 mph. Chance of precipitation is 30%.
Thursday
A chance of rain. Cloudy, with a high near 43. Southwest wind 8 to 11 mph. Chance of precipitation is 30%.
Thursday Night
A chance of rain. Cloudy, with a low around 36. Southwest wind 8 to 10 mph becoming northeast in the evening. Chance of precipitation is 50%.
Friday
A chance of rain. Cloudy, with a high near 42. East wind 10 to 13 mph. Chance of precipitation is 50%.
Friday Night
A chance of rain. Mostly cloudy, with a low around 36. Southeast wind 8 to 10 mph becoming south after midnight. Chance of precipitation is 40%.
Saturday
Mostly cloudy, with a high near 45. Southwest wind 8 to 11 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Siasconset MA
 41.28°N 69.97°W (Elev. 56 ft)
Last Update:
5:07 am EST Mar 1, 2026
Forecast Valid:
8am EST Mar 1, 2026-6pm EST Mar 7, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation