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

33°F

1°C

Humidity 85%
Wind Speed Calm
Barometer 30.21 in (1023.1 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 8 Jan 5:53 pm EST
Extended Forecast for

2 Miles ENE Siasconset MA

  • Tonight

    Tonight: Patchy fog after 1am. Otherwise, partly cloudy, with a low around 34. Calm wind.

    Low: 34 °F

    Mostly Clear
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 46. South wind 5 to 11 mph.

    High: 46 °F

    Patchy Fog
    then Partly
    Sunny

  • Friday Night

    Friday Night: Rain likely, mainly before 1am. Patchy fog. Otherwise, cloudy, with a low around 37. South wind 13 to 16 mph becoming west after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Rain Likely
    and Patchy
    Fog

  • Saturday

    Saturday: Rain likely, mainly after 2pm. Patchy fog before 8am. Otherwise, cloudy, with a high near 44. West wind 7 to 9 mph becoming east in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 44 °F

    Chance Rain
    and Patchy
    Fog then Rain
    Likely

  • Saturday Night

    Saturday Night: Rain. Low around 37. East wind 9 to 11 mph becoming southwest after midnight. Chance of precipitation is 100%.

    Low: 37 °F

    Rain

  • Sunday

    Sunday: Rain. High near 43. West wind around 11 mph. Chance of precipitation is 80%.

    High: 43 °F

    Rain

  • Sunday Night

    Sunday Night: A chance of rain before 3am. Mostly cloudy, with a low around 30. Breezy, with a west wind 14 to 20 mph. Chance of precipitation is 50%.

    Low: 30 °F

    Chance Rain
    and Breezy

  • Monday

    Monday: Sunny, with a high near 38. Breezy, with a west wind 15 to 21 mph.

    High: 38 °F

    Sunny and
    Breezy then
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 32. West wind around 14 mph.

    Low: 32 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog after 1am. Otherwise, partly cloudy, with a low around 34. Calm wind.
Friday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 46. South wind 5 to 11 mph.
Friday Night
Rain likely, mainly before 1am. Patchy fog. Otherwise, cloudy, with a low around 37. South wind 13 to 16 mph becoming west after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain likely, mainly after 2pm. Patchy fog before 8am. Otherwise, cloudy, with a high near 44. West wind 7 to 9 mph becoming east in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
Rain. Low around 37. East wind 9 to 11 mph becoming southwest after midnight. Chance of precipitation is 100%.
Sunday
Rain. High near 43. West wind around 11 mph. Chance of precipitation is 80%.
Sunday Night
A chance of rain before 3am. Mostly cloudy, with a low around 30. Breezy, with a west wind 14 to 20 mph. Chance of precipitation is 50%.
Monday
Sunny, with a high near 38. Breezy, with a west wind 15 to 21 mph.
Monday Night
Partly cloudy, with a low around 32. West wind around 14 mph.
Tuesday
Mostly sunny, with a high near 41. Southwest wind around 15 mph.
Tuesday Night
Partly cloudy, with a low around 36. Southwest wind 10 to 13 mph.
Wednesday
Mostly cloudy, with a high near 42. Southwest wind 10 to 13 mph.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 34. Southwest wind around 9 mph. Chance of precipitation is 40%.
Thursday
A chance of rain. Mostly cloudy, with a high near 40. West wind 9 to 11 mph. Chance of precipitation is 40%.
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Forecast Area
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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:
1:10 pm EST Jan 8, 2026
Forecast Valid:
6pm EST Jan 8, 2026-6pm EST Jan 15, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation