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

32°F

0°C

Humidity 75%
Wind Speed Calm
Barometer 30.11 in (1019.5 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 19 Feb 5:53 pm EST
Extended Forecast for

3 Miles NNE Siasconset MA

  • Tonight

    Tonight: Mostly cloudy, with a low around 33. Light northeast wind becoming east 5 to 9 mph in the evening.

    Low: 33 °F

    Mostly Cloudy

  • Friday

    Friday: Rain, mainly after 2pm. High near 38. East wind 10 to 17 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 38 °F

    Slight Chance
    Rain then
    Rain

  • Friday Night

    Friday Night: Rain before 5am, then a chance of rain and snow. Low around 32. Breezy, with an east wind 15 to 22 mph becoming north after midnight. Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 32 °F

    Breezy. Rain
    then
    Rain/Snow
    Likely

  • Saturday

    Saturday: A chance of snow or light snow before 10am, then a slight chance of light snow after 4pm. Mostly cloudy, with a high near 34. North wind 10 to 13 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 34 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A slight chance of light snow before 8pm. Mostly cloudy, with a low around 31. Northeast wind around 9 mph. Chance of precipitation is 20%.

    Low: 31 °F

    Slight Chance
    Light Snow
    then Mostly
    Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 35. Northeast wind 9 to 16 mph.

    High: 35 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A chance of snow after 10pm, mixing with rain after 4am. Cloudy, with a low around 32. Very windy, with an east wind 22 to 27 mph increasing to 35 to 40 mph after midnight. Chance of precipitation is 50%.

    Low: 32 °F

    Chance Snow
    and Windy
    then Chance
    Rain/Snow and
    Very Windy

  • Monday

    Monday: A chance of rain and snow before 7am, then a chance of snow. Cloudy, with a high near 35. Very windy, with a north wind 43 to 45 mph, with gusts as high as 55 mph. Chance of precipitation is 50%.

    High: 35 °F

    Very Windy.
    Chance
    Rain/Snow
    then Chance
    Snow

  • Monday Night

    Monday Night: A chance of snow before 11pm. Mostly cloudy, with a low around 29. Very windy, with a northwest wind 30 to 40 mph decreasing to 20 to 30 mph after midnight. Chance of precipitation is 40%.

    Low: 29 °F

    Chance Snow
    and Very
    Windy then
    Mostly Cloudy
    and Blustery

Detailed Forecast

Tonight
Mostly cloudy, with a low around 33. Light northeast wind becoming east 5 to 9 mph in the evening.
Friday
Rain, mainly after 2pm. High near 38. East wind 10 to 17 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Rain before 5am, then a chance of rain and snow. Low around 32. Breezy, with an east wind 15 to 22 mph becoming north after midnight. Chance of precipitation is 90%. Little or no snow accumulation expected.
Saturday
A chance of snow or light snow before 10am, then a slight chance of light snow after 4pm. Mostly cloudy, with a high near 34. North wind 10 to 13 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Saturday Night
A slight chance of light snow before 8pm. Mostly cloudy, with a low around 31. Northeast wind around 9 mph. Chance of precipitation is 20%.
Sunday
Mostly cloudy, with a high near 35. Northeast wind 9 to 16 mph.
Sunday Night
A chance of snow after 10pm, mixing with rain after 4am. Cloudy, with a low around 32. Very windy, with an east wind 22 to 27 mph increasing to 35 to 40 mph after midnight. Chance of precipitation is 50%.
Monday
A chance of rain and snow before 7am, then a chance of snow. Cloudy, with a high near 35. Very windy, with a north wind 43 to 45 mph, with gusts as high as 55 mph. Chance of precipitation is 50%.
Monday Night
A chance of snow before 11pm. Mostly cloudy, with a low around 29. Very windy, with a northwest wind 30 to 40 mph decreasing to 20 to 30 mph after midnight. Chance of precipitation is 40%.
Tuesday
Partly sunny, with a high near 33. Northwest wind 10 to 15 mph.
Tuesday Night
Mostly clear, with a low around 27. West wind around 10 mph.
Wednesday
Partly sunny, with a high near 41. South wind 9 to 14 mph.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 35. South wind 14 to 18 mph. Chance of precipitation is 40%.
Thursday
A chance of rain. Mostly cloudy, with a high near 41. Southwest wind 16 to 18 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:
5:35 pm EST Feb 19, 2026
Forecast Valid:
6pm EST Feb 19, 2026-6pm EST Feb 26, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation