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

23°F

-5°C

Humidity 55%
Wind Speed N 13 mph
Barometer 30.59 in (1035.9 mb)
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill11°F (-12°C)
Last update 2 Mar 6:53 am EST
Extended Forecast for

3 Miles NNE Siasconset MA

  • Today

    Today: Mostly sunny, with a high near 28. North wind 10 to 15 mph becoming light northwest in the afternoon.

    High: 28 °F

    Mostly Sunny

  • Tonight

    Tonight: Clear, with a low around 25. South wind 3 to 6 mph.

    Low: 25 °F

    Clear

  • Tuesday

    Tuesday: A slight chance of freezing rain before 9am, then rain likely. Increasing clouds, with a high near 43. South wind 10 to 15 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 43 °F

    Chance
    Rain/Freezing
    Rain then
    Rain Likely

  • Tuesday Night

    Tuesday Night: Rain. Low around 37. Southeast wind 14 to 18 mph becoming west after midnight. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 37 °F

    Rain

  • Wednesday

    Wednesday: Rain likely, mainly before 10am. Partly sunny, with a high near 40. West wind 5 to 10 mph becoming east in the afternoon. Chance of precipitation is 60%.

    High: 40 °F

    Rain Likely
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: A chance of rain, mainly after 3am. Mostly cloudy, with a low around 38. Light south wind. Chance of precipitation is 30%.

    Low: 38 °F

    Chance Rain

  • Thursday

    Thursday: A chance of rain. Cloudy, with a high near 42. South wind 6 to 8 mph becoming east in the afternoon. Chance of precipitation is 40%.

    High: 42 °F

    Chance Rain

  • Thursday Night

    Thursday Night: Rain likely, mainly after 4am. Cloudy, with a low around 38. East wind 7 to 14 mph. Chance of precipitation is 60%.

    Low: 38 °F

    Rain Likely

  • Friday

    Friday: A chance of rain before 4pm. Cloudy, with a high near 40. Northeast wind 14 to 17 mph. Chance of precipitation is 50%.

    High: 40 °F

    Chance Rain

Detailed Forecast

Today
Mostly sunny, with a high near 28. North wind 10 to 15 mph becoming light northwest in the afternoon.
Tonight
Clear, with a low around 25. South wind 3 to 6 mph.
Tuesday
A slight chance of freezing rain before 9am, then rain likely. Increasing clouds, with a high near 43. South wind 10 to 15 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
Rain. Low around 37. Southeast wind 14 to 18 mph becoming west after midnight. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
Rain likely, mainly before 10am. Partly sunny, with a high near 40. West wind 5 to 10 mph becoming east in the afternoon. Chance of precipitation is 60%.
Wednesday Night
A chance of rain, mainly after 3am. Mostly cloudy, with a low around 38. Light south wind. Chance of precipitation is 30%.
Thursday
A chance of rain. Cloudy, with a high near 42. South wind 6 to 8 mph becoming east in the afternoon. Chance of precipitation is 40%.
Thursday Night
Rain likely, mainly after 4am. Cloudy, with a low around 38. East wind 7 to 14 mph. Chance of precipitation is 60%.
Friday
A chance of rain before 4pm. Cloudy, with a high near 40. Northeast wind 14 to 17 mph. Chance of precipitation is 50%.
Friday Night
Cloudy, with a low around 37. Northeast wind 8 to 13 mph.
Saturday
Partly sunny, with a high near 45. Southeast wind 8 to 15 mph becoming southwest in the afternoon.
Saturday Night
A chance of rain. Cloudy, with a low around 41. Southwest wind 14 to 17 mph. Chance of precipitation is 40%.
Sunday
A chance of rain. Cloudy, with a high near 45. Southwest wind 10 to 15 mph. Chance of precipitation is 30%.
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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 am EST Mar 2, 2026
Forecast Valid:
7am EST Mar 2, 2026-6pm EDT Mar 8, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation