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.

Fog/Mist

45°F

7°C

Humidity 100%
Wind Speed W 14 mph
Barometer NA
Dewpoint 45°F (7°C)
Visibility 6.00 mi
Wind Chill39°F (4°C)
Last update 10 Jan 3:53 am EST
Extended Forecast for

3 Miles NNE Siasconset MA

  • Today

    Today: A chance of rain, mainly after 5pm. Cloudy, with a high near 42. Northwest wind 7 to 10 mph becoming east in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 42 °F

    Mostly Cloudy
    then Chance
    Rain

  • Tonight

    Tonight: Rain. Low around 39. East wind 11 to 17 mph becoming southwest after midnight. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    Low: 39 °F

    Rain

  • Sunday

    Sunday: Rain likely, mainly before 1pm. Cloudy, with a high near 42. Breezy, with a west wind 13 to 21 mph. Chance of precipitation is 70%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 42 °F

    Rain Likely
    and Breezy

  • Sunday Night

    Sunday Night: A chance of rain before midnight, then a slight chance of snow showers between midnight and 3am. Partly cloudy, with a low around 31. Windy, with a west wind 22 to 28 mph, with gusts as high as 48 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 31 °F

    Chance
    Rain/Snow and
    Windy

  • Monday

    Monday: Sunny, with a high near 38. Windy, with a west wind 23 to 28 mph decreasing to 17 to 22 mph in the afternoon.

    High: 38 °F

    Sunny and
    Windy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 35. Breezy, with a west wind 16 to 20 mph.

    Low: 35 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 41. West wind 15 to 17 mph.

    High: 41 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 38. Southwest wind 16 to 18 mph, with gusts as high as 29 mph.

    Low: 38 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 44. Southwest wind 14 to 18 mph, with gusts as high as 29 mph.

    High: 44 °F

    Mostly Cloudy

Detailed Forecast

Today
A chance of rain, mainly after 5pm. Cloudy, with a high near 42. Northwest wind 7 to 10 mph becoming east in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain. Low around 39. East wind 11 to 17 mph becoming southwest after midnight. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Sunday
Rain likely, mainly before 1pm. Cloudy, with a high near 42. Breezy, with a west wind 13 to 21 mph. Chance of precipitation is 70%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday Night
A chance of rain before midnight, then a slight chance of snow showers between midnight and 3am. Partly cloudy, with a low around 31. Windy, with a west wind 22 to 28 mph, with gusts as high as 48 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Monday
Sunny, with a high near 38. Windy, with a west wind 23 to 28 mph decreasing to 17 to 22 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 35. Breezy, with a west wind 16 to 20 mph.
Tuesday
Sunny, with a high near 41. West wind 15 to 17 mph.
Tuesday Night
Mostly cloudy, with a low around 38. Southwest wind 16 to 18 mph, with gusts as high as 29 mph.
Wednesday
Mostly cloudy, with a high near 44. Southwest wind 14 to 18 mph, with gusts as high as 29 mph.
Wednesday Night
A chance of showers after 8pm. Cloudy, with a low around 35. Southwest wind 9 to 11 mph. Chance of precipitation is 30%.
Thursday
A chance of rain. Mostly cloudy, with a high near 37. Northwest wind 10 to 14 mph. Chance of precipitation is 30%.
Thursday Night
A chance of snow. Cloudy, with a low around 29. North wind 13 to 16 mph. Chance of precipitation is 40%.
Friday
A chance of snow. Mostly cloudy, with a high near 33. Breezy, with a north wind 17 to 20 mph. Chance of precipitation is 40%.
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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:
12:50 am EST Jan 10, 2026
Forecast Valid:
4am EST Jan 10, 2026-6pm EST Jan 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation