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

49°F

9°C

Humidity 93%
Wind Speed W 7 mph
Barometer 29.75 in (1007.3 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 30 Apr 11:53 pm EDT
Extended Forecast for

3 Miles NNE Siasconset MA

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly cloudy, with a low around 47. West wind around 8 mph.

    Low: 47 °F

    Patchy Fog

  • Friday

    Friday: Mostly sunny, with a high near 53. Northwest wind 8 to 10 mph.

    High: 53 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 48. West wind 8 to 10 mph.

    Low: 48 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 52. South wind 6 to 10 mph.

    High: 52 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Showers likely, mainly after 1am. Cloudy, with a low around 45. South wind 6 to 9 mph becoming northeast after midnight. Chance of precipitation is 70%.

    Low: 45 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers likely, mainly before noon. Mostly cloudy, with a high near 52. North wind 11 to 13 mph. Chance of precipitation is 60%.

    High: 52 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 47. West wind 9 to 14 mph.

    Low: 47 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 54. Breezy, with a southwest wind 10 to 20 mph.

    High: 54 °F

    Sunny then
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 51. Breezy, with a southwest wind 17 to 20 mph.

    Low: 51 °F

    Mostly Clear
    and Breezy
    then Partly
    Cloudy

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 47. West wind around 8 mph.
Friday
Mostly sunny, with a high near 53. Northwest wind 8 to 10 mph.
Friday Night
Partly cloudy, with a low around 48. West wind 8 to 10 mph.
Saturday
Partly sunny, with a high near 52. South wind 6 to 10 mph.
Saturday Night
Showers likely, mainly after 1am. Cloudy, with a low around 45. South wind 6 to 9 mph becoming northeast after midnight. Chance of precipitation is 70%.
Sunday
Showers likely, mainly before noon. Mostly cloudy, with a high near 52. North wind 11 to 13 mph. Chance of precipitation is 60%.
Sunday Night
Partly cloudy, with a low around 47. West wind 9 to 14 mph.
Monday
Sunny, with a high near 54. Breezy, with a southwest wind 10 to 20 mph.
Monday Night
Partly cloudy, with a low around 51. Breezy, with a southwest wind 17 to 20 mph.
Tuesday
Mostly sunny, with a high near 56. Breezy, with a south wind 21 to 23 mph.
Tuesday Night
Partly cloudy, with a low around 53. Breezy, with a south wind 18 to 21 mph.
Wednesday
Partly sunny, with a high near 58. Breezy, with a south wind 16 to 20 mph.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 52. Breezy, with a south wind 17 to 20 mph. Chance of precipitation is 50%.
Thursday
Showers likely. Mostly cloudy, with a high near 57. Breezy, with a south wind 18 to 20 mph. Chance of precipitation is 70%.
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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:
6:51 pm EDT Apr 30, 2026
Forecast Valid:
12am EDT May 1, 2026-6pm EDT May 7, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation