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

50°F

10°C

Humidity 86%
Wind Speed S 17 mph
Barometer 29.88 in (1011.6 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 11 Mar 5:53 pm EDT
Extended Forecast for

3 Miles NNE Siasconset MA

  • Tonight

    Tonight: A slight chance of showers after 2am. Patchy dense fog. Otherwise, cloudy, with a low around 43. Breezy, with a south wind 14 to 23 mph. Chance of precipitation is 20%.

    Low: 43 °F

    Slight Chance
    Showers and
    Patchy Dense
    Fog

  • Thursday

    Thursday: A chance of showers, mainly after 9am. Patchy fog before 1pm. Otherwise, cloudy, with a temperature falling to around 41 by 5pm. Breezy, with a southwest wind 17 to 23 mph becoming northwest in the afternoon. Chance of precipitation is 40%.

    High: 48 °F⇓

    Chance
    Showers and
    Patchy Fog

  • Thursday Night

    Thursday Night: A chance of rain showers before 11pm, then a slight chance of snow showers between 11pm and midnight. Cloudy during the early evening, then gradual clearing, with a low around 33. Breezy, with a northwest wind 17 to 21 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 33 °F

    Breezy.
    Chance
    Rain/Snow
    then Partly
    Cloudy

  • Friday

    Friday: Increasing clouds, with a high near 43. Northwest wind 9 to 14 mph becoming southwest in the afternoon.

    High: 43 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 38. Breezy, with a south wind 17 to 24 mph.

    Low: 38 °F

    Mostly Cloudy
    and Breezy

  • Saturday

    Saturday: Sunny, with a high near 43. Windy, with a west wind 22 to 26 mph.

    High: 43 °F

    Sunny and
    Windy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 34. Breezy, with a northwest wind 14 to 20 mph.

    Low: 34 °F

    Mostly Clear
    and Breezy

  • Sunday

    Sunday: Mostly cloudy, with a high near 43. North wind 6 to 8 mph becoming southeast in the afternoon.

    High: 43 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A chance of rain after 2am. Cloudy, with a low around 38. Windy, with a southeast wind 14 to 19 mph increasing to 21 to 26 mph after midnight. Chance of precipitation is 30%.

    Low: 38 °F

    Mostly Cloudy
    and Breezy
    then Chance
    Rain and
    Windy

Detailed Forecast

Tonight
A slight chance of showers after 2am. Patchy dense fog. Otherwise, cloudy, with a low around 43. Breezy, with a south wind 14 to 23 mph. Chance of precipitation is 20%.
Thursday
A chance of showers, mainly after 9am. Patchy fog before 1pm. Otherwise, cloudy, with a temperature falling to around 41 by 5pm. Breezy, with a southwest wind 17 to 23 mph becoming northwest in the afternoon. Chance of precipitation is 40%.
Thursday Night
A chance of rain showers before 11pm, then a slight chance of snow showers between 11pm and midnight. Cloudy during the early evening, then gradual clearing, with a low around 33. Breezy, with a northwest wind 17 to 21 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Friday
Increasing clouds, with a high near 43. Northwest wind 9 to 14 mph becoming southwest in the afternoon.
Friday Night
Mostly cloudy, with a low around 38. Breezy, with a south wind 17 to 24 mph.
Saturday
Sunny, with a high near 43. Windy, with a west wind 22 to 26 mph.
Saturday Night
Mostly clear, with a low around 34. Breezy, with a northwest wind 14 to 20 mph.
Sunday
Mostly cloudy, with a high near 43. North wind 6 to 8 mph becoming southeast in the afternoon.
Sunday Night
A chance of rain after 2am. Cloudy, with a low around 38. Windy, with a southeast wind 14 to 19 mph increasing to 21 to 26 mph after midnight. Chance of precipitation is 30%.
Monday
Rain, mainly after 7am. High near 50. Windy, with a south wind 29 to 31 mph, with gusts as high as 46 mph. Chance of precipitation is 80%.
Monday Night
Rain likely. Cloudy, with a low around 35. Windy, with a south wind 25 to 31 mph becoming west after midnight. Winds could gust as high as 41 mph. Chance of precipitation is 70%.
Tuesday
A chance of rain. Mostly cloudy, with a high near 40. Breezy, with a west wind 18 to 22 mph. Chance of precipitation is 30%.
Tuesday Night
Partly cloudy, with a low around 28. Blustery, with a northwest wind 16 to 22 mph.
Wednesday
Mostly sunny, with a high near 34. West wind 10 to 14 mph.
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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:
4:43 pm EDT Mar 11, 2026
Forecast Valid:
6pm EDT Mar 11, 2026-6pm EDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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