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

43°F

6°C

Humidity 63%
Wind Speed SW 12 mph
Barometer 30.17 in (1021.6 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 20 Mar 8:53 am EDT
Extended Forecast for

3 Miles NNE Siasconset MA

  • Today

    Today: Partly sunny, with a high near 46. West wind 7 to 17 mph becoming south in the afternoon.

    High: 46 °F

    Partly Sunny

  • Tonight

    Tonight: Showers, mainly after 11pm. Low around 40. Breezy, with a south wind 18 to 24 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 40 °F

    Breezy.
    Showers
    Likely then
    Showers

  • Saturday

    Saturday: A chance of showers before 8am. Cloudy through mid morning, then gradual clearing, with a high near 45. West wind 14 to 18 mph becoming north in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 45 °F

    Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 39. North wind 7 to 13 mph.

    Low: 39 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of rain after 2pm. Mostly cloudy, with a high near 45. South wind 9 to 15 mph. Chance of precipitation is 20%.

    High: 45 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Sunday Night

    Sunday Night: Rain likely, mainly after 3am. Cloudy, with a low around 39. Southwest wind 13 to 16 mph becoming north after midnight. Chance of precipitation is 60%.

    Low: 39 °F

    Rain Likely

  • Monday

    Monday: Rain likely, mainly before 8am. Mostly cloudy, with a high near 42. Breezy, with a north wind 18 to 21 mph. Chance of precipitation is 60%.

    High: 42 °F

    Rain Likely
    and Breezy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 33. Breezy, with a north wind 17 to 20 mph.

    Low: 33 °F

    Mostly Cloudy
    and Breezy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 38. North wind 10 to 17 mph.

    High: 38 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 46. West wind 7 to 17 mph becoming south in the afternoon.
Tonight
Showers, mainly after 11pm. Low around 40. Breezy, with a south wind 18 to 24 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
A chance of showers before 8am. Cloudy through mid morning, then gradual clearing, with a high near 45. West wind 14 to 18 mph becoming north in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Mostly cloudy, with a low around 39. North wind 7 to 13 mph.
Sunday
A slight chance of rain after 2pm. Mostly cloudy, with a high near 45. South wind 9 to 15 mph. Chance of precipitation is 20%.
Sunday Night
Rain likely, mainly after 3am. Cloudy, with a low around 39. Southwest wind 13 to 16 mph becoming north after midnight. Chance of precipitation is 60%.
Monday
Rain likely, mainly before 8am. Mostly cloudy, with a high near 42. Breezy, with a north wind 18 to 21 mph. Chance of precipitation is 60%.
Monday Night
Mostly cloudy, with a low around 33. Breezy, with a north wind 17 to 20 mph.
Tuesday
Mostly sunny, with a high near 38. North wind 10 to 17 mph.
Tuesday Night
Mostly cloudy, with a low around 35. Southwest wind 8 to 14 mph.
Wednesday
Partly sunny, with a high near 42. Southwest wind around 16 mph.
Wednesday Night
Mostly cloudy, with a low around 34. Northwest wind 14 to 16 mph.
Thursday
A chance of rain. Partly sunny, with a high near 46. Northwest wind around 16 mph becoming south in the morning. Chance of precipitation is 30%.
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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:
2:34 am EDT Mar 20, 2026
Forecast Valid:
9am EDT Mar 20, 2026-6pm EDT Mar 26, 2026
 
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Additional Resources

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