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

42°F

6°C

Humidity 96%
Wind Speed SW 10 mph
Barometer 30.07 in (1018.4 mb)
Dewpoint 41°F (5°C)
Visibility 0.50 mi
Wind Chill36°F (2°C)
Last update 10 Mar 9:53 am EDT
Extended Forecast for

2 Miles NNW Siasconset MA

  • Today

    Today: Patchy fog before noon. Otherwise, mostly cloudy, with a high near 47. Southwest wind 11 to 14 mph.

    High: 47 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Tonight

    Tonight: Patchy fog. Otherwise, cloudy, with a low around 39. Southwest wind 7 to 10 mph.

    Low: 39 °F

    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog. Otherwise, cloudy, with a high near 47. South wind 8 to 13 mph.

    High: 47 °F

    Patchy Fog

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 42. South wind 14 to 18 mph.

    Low: 42 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of rain, mainly after 2pm. Mostly cloudy, with a high near 49. Southwest wind 15 to 18 mph. Chance of precipitation is 40%.

    High: 49 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A slight chance of rain before 9pm. Mostly cloudy, with a low around 31. Northwest wind 13 to 16 mph. Chance of precipitation is 20%.

    Low: 31 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 42. West wind 8 to 11 mph becoming southwest in the afternoon.

    High: 42 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of rain after 11pm. Mostly cloudy, with a low around 35. South wind 13 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 30%.

    Low: 35 °F

    Chance Rain

  • Saturday

    Saturday: Mostly sunny, with a high near 43. West wind 15 to 17 mph.

    High: 43 °F

    Mostly Sunny

Detailed Forecast

Today
Patchy fog before noon. Otherwise, mostly cloudy, with a high near 47. Southwest wind 11 to 14 mph.
Tonight
Patchy fog. Otherwise, cloudy, with a low around 39. Southwest wind 7 to 10 mph.
Wednesday
Patchy fog. Otherwise, cloudy, with a high near 47. South wind 8 to 13 mph.
Wednesday Night
Mostly cloudy, with a low around 42. South wind 14 to 18 mph.
Thursday
A chance of rain, mainly after 2pm. Mostly cloudy, with a high near 49. Southwest wind 15 to 18 mph. Chance of precipitation is 40%.
Thursday Night
A slight chance of rain before 9pm. Mostly cloudy, with a low around 31. Northwest wind 13 to 16 mph. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 42. West wind 8 to 11 mph becoming southwest in the afternoon.
Friday Night
A chance of rain after 11pm. Mostly cloudy, with a low around 35. South wind 13 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 43. West wind 15 to 17 mph.
Saturday Night
Partly cloudy, with a low around 34. Northwest wind 7 to 9 mph.
Sunday
Mostly cloudy, with a high near 46. Southeast wind 8 to 13 mph.
Sunday Night
Rain likely. Cloudy, with a low around 40. South wind 15 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 60%.
Monday
Rain. High near 49. Breezy, with a south wind 18 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 80%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Siasconset MA
 41.29°N 70.02°W (Elev. 33 ft)
Last Update:
3:44 am EDT Mar 10, 2026
Forecast Valid:
10am EDT Mar 10, 2026-6pm EDT Mar 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation