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.

A Few Clouds

50°F

10°C

Humidity 77%
Wind Speed S 12 mph
Barometer 29.90 in (1012.5 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 2 May 2:53 pm EDT
Extended Forecast for

3 Miles NNE Siasconset MA

  • This Afternoon

    This Afternoon: A chance of showers after 5pm. Mostly cloudy, with a high near 53. South wind around 13 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 53 °F

    Chance
    Showers

  • Tonight

    Tonight: Showers, mainly after 7pm. Patchy fog after 7pm. Low around 45. South wind 6 to 9 mph becoming northwest after midnight. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 45 °F

    Showers and
    Patchy Fog

  • Sunday

    Sunday: A chance of showers, mainly before 10am. Patchy fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 53. Northwest wind 14 to 16 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 53 °F

    Chance
    Showers and
    Patchy Fog
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 48. West wind around 14 mph.

    Low: 48 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 54. Breezy, with a southwest wind 15 to 20 mph.

    High: 54 °F

    Sunny then
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 51. Southwest wind 16 to 18 mph.

    Low: 51 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 57. Breezy, with a south wind 17 to 21 mph.

    High: 57 °F

    Sunny then
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 53. Windy, with a south wind 25 to 28 mph.

    Low: 53 °F

    Mostly Cloudy
    and Windy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 57. Breezy, with a south wind around 24 mph, with gusts as high as 34 mph.

    High: 57 °F

    Mostly Cloudy
    and Breezy

Detailed Forecast

This Afternoon
A chance of showers after 5pm. Mostly cloudy, with a high near 53. South wind around 13 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Showers, mainly after 7pm. Patchy fog after 7pm. Low around 45. South wind 6 to 9 mph becoming northwest after midnight. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday
A chance of showers, mainly before 10am. Patchy fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 53. Northwest wind 14 to 16 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Mostly clear, with a low around 48. West wind around 14 mph.
Monday
Sunny, with a high near 54. Breezy, with a southwest wind 15 to 20 mph.
Monday Night
Mostly clear, with a low around 51. Southwest wind 16 to 18 mph.
Tuesday
Sunny, with a high near 57. Breezy, with a south wind 17 to 21 mph.
Tuesday Night
Mostly cloudy, with a low around 53. Windy, with a south wind 25 to 28 mph.
Wednesday
Mostly cloudy, with a high near 57. Breezy, with a south wind around 24 mph, with gusts as high as 34 mph.
Wednesday Night
A chance of showers. Cloudy, with a low around 52. Breezy, with a south wind around 21 mph. Chance of precipitation is 50%.
Thursday
Showers likely. Mostly cloudy, with a high near 58. Breezy, with a south wind 18 to 25 mph, with gusts as high as 36 mph. Chance of precipitation is 70%.
Thursday Night
Showers likely. Mostly cloudy, with a low around 48. Breezy, with a south wind 18 to 24 mph becoming west after midnight. Winds could gust as high as 34 mph. Chance of precipitation is 70%.
Friday
Mostly sunny, with a high near 55. Breezy, with a west wind around 21 mph.
Friday Night
Mostly clear, with a low around 49. West wind 9 to 15 mph.
Saturday
Mostly sunny, with a high near 55.
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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:
2:33 pm EDT May 2, 2026
Forecast Valid:
3pm EDT May 2, 2026-6pm EDT May 9, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation