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 100%
Wind Speed Calm
Barometer 30.03 in (1017.0 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 28 Feb 10:53 pm EST
Extended Forecast for

2 Miles ENE Siasconset MA

  • Tonight

    Tonight: Mostly cloudy, with a low around 33. Calm wind becoming north around 6 mph after midnight.

    Low: 33 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of rain before 1pm, then a chance of snow after 2pm. Increasing clouds, with a high near 37. North wind 7 to 13 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 37 °F

    Slight Chance
    Rain then
    Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: A chance of snow before 7pm. Partly cloudy, with a low around 20. North wind 11 to 14 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    Low: 20 °F

    Chance Snow
    then Partly
    Cloudy

  • Monday

    Monday: Partly sunny, with a high near 26. North wind 6 to 11 mph.

    High: 26 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 21. Calm wind becoming south around 6 mph after midnight.

    Low: 21 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of rain, mainly after 1pm. Partly sunny, with a high near 42. South wind 9 to 14 mph. Chance of precipitation is 30%.

    High: 42 °F

    Mostly Sunny
    then Chance
    Rain

  • Tuesday Night

    Tuesday Night: Rain. Low around 36. South wind 13 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.

    Low: 36 °F

    Rain

  • Wednesday

    Wednesday: Rain likely, mainly before 7am. Mostly cloudy, with a high near 41. West wind 7 to 13 mph becoming east in the afternoon. Chance of precipitation is 60%.

    High: 41 °F

    Rain Likely
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: A chance of rain after 3am. Mostly cloudy, with a low around 35. Southeast wind around 7 mph. Chance of precipitation is 30%.

    Low: 35 °F

    Mostly Cloudy
    then Chance
    Rain

Detailed Forecast

Tonight
Mostly cloudy, with a low around 33. Calm wind becoming north around 6 mph after midnight.
Sunday
A slight chance of rain before 1pm, then a chance of snow after 2pm. Increasing clouds, with a high near 37. North wind 7 to 13 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Sunday Night
A chance of snow before 7pm. Partly cloudy, with a low around 20. North wind 11 to 14 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Monday
Partly sunny, with a high near 26. North wind 6 to 11 mph.
Monday Night
Mostly clear, with a low around 21. Calm wind becoming south around 6 mph after midnight.
Tuesday
A chance of rain, mainly after 1pm. Partly sunny, with a high near 42. South wind 9 to 14 mph. Chance of precipitation is 30%.
Tuesday Night
Rain. Low around 36. South wind 13 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
Wednesday
Rain likely, mainly before 7am. Mostly cloudy, with a high near 41. West wind 7 to 13 mph becoming east in the afternoon. Chance of precipitation is 60%.
Wednesday Night
A chance of rain after 3am. Mostly cloudy, with a low around 35. Southeast wind around 7 mph. Chance of precipitation is 30%.
Thursday
A chance of rain. Cloudy, with a high near 42. Southwest wind 8 to 11 mph. Chance of precipitation is 30%.
Thursday Night
A chance of rain. Cloudy, with a low around 37. Southwest wind around 11 mph becoming east after midnight. Chance of precipitation is 50%.
Friday
A chance of rain. Cloudy, with a high near 43. East wind 10 to 13 mph. Chance of precipitation is 50%.
Friday Night
A chance of rain. Cloudy, with a low around 37. Southeast wind 8 to 10 mph becoming southwest after midnight. Chance of precipitation is 30%.
Saturday
Mostly cloudy, with a high near 44. Southwest wind 8 to 11 mph.
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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:
5:15 pm EST Feb 28, 2026
Forecast Valid:
11pm EST Feb 28, 2026-6pm EST Mar 7, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation