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.

Overcast

45°F

7°C

Humidity 93%
Wind Speed SW 10 mph
Barometer 29.79 in (1008.8 mb)
Dewpoint 43°F (6°C)
Visibility 7.00 mi
Wind Chill40°F (4°C)
Last update 22 Mar 3:53 pm EDT
Extended Forecast for

3 Miles NNE Siasconset MA

  • This Afternoon

    This Afternoon: Rain. Patchy fog. High near 45. Breezy, with a south wind 18 to 20 mph. Chance of precipitation is 100%. New precipitation amounts of less than a tenth of an inch possible.

    High: 45 °F

    Rain and
    Patchy Fog

  • Tonight

    Tonight: Rain. Patchy fog before 11pm. Low around 40. Southwest wind 9 to 15 mph becoming north after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 40 °F

    Rain and
    Patchy Fog

  • Monday

    Monday: Rain before 11am, then showers likely, mainly between 11am and 1pm. High near 40. Breezy, with a north wind 22 to 25 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 40 °F

    Breezy. Rain
    then Showers
    Likely

  • Monday Night

    Monday Night: A chance of rain and snow showers before midnight, then a chance of rain showers between midnight and 2am, then a chance of snow showers after 2am. Mostly cloudy, with a low around 35. Breezy, with a north wind 14 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

    Low: 35 °F

    Chance
    Rain/Snow and
    Breezy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 39. North wind 6 to 14 mph.

    High: 39 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 37. Southwest wind 9 to 15 mph.

    Low: 37 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 44. Southwest wind 15 to 18 mph.

    High: 44 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 40. Southwest wind around 15 mph.

    Low: 40 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 48. South wind 11 to 13 mph.

    High: 48 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Rain. Patchy fog. High near 45. Breezy, with a south wind 18 to 20 mph. Chance of precipitation is 100%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain. Patchy fog before 11pm. Low around 40. Southwest wind 9 to 15 mph becoming north after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Monday
Rain before 11am, then showers likely, mainly between 11am and 1pm. High near 40. Breezy, with a north wind 22 to 25 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Monday Night
A chance of rain and snow showers before midnight, then a chance of rain showers between midnight and 2am, then a chance of snow showers after 2am. Mostly cloudy, with a low around 35. Breezy, with a north wind 14 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Tuesday
Mostly sunny, with a high near 39. North wind 6 to 14 mph.
Tuesday Night
Partly cloudy, with a low around 37. Southwest wind 9 to 15 mph.
Wednesday
Partly sunny, with a high near 44. Southwest wind 15 to 18 mph.
Wednesday Night
Mostly cloudy, with a low around 40. Southwest wind around 15 mph.
Thursday
Partly sunny, with a high near 48. South wind 11 to 13 mph.
Thursday Night
A chance of rain after 11pm. Cloudy, with a low around 41. Windy, with a southwest wind 16 to 21 mph increasing to 23 to 28 mph after midnight. Chance of precipitation is 50%.
Friday
A chance of rain. Mostly cloudy, with a high near 47. Breezy, with a southwest wind 17 to 25 mph becoming north in the afternoon. Chance of precipitation is 50%.
Friday Night
Mostly cloudy, with a low around 29. Blustery, with a north wind 16 to 20 mph.
Saturday
Mostly sunny, with a high near 36. North wind 9 to 14 mph.
Saturday Night
Partly cloudy, with a low around 31. West wind 9 to 11 mph.
Sunday
Mostly sunny, with a high near 42.
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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:
3:45 pm EDT Mar 22, 2026
Forecast Valid:
4pm EDT Mar 22, 2026-6pm EDT Mar 29, 2026
 
Forecast Discussion
 
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Additional Resources

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