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

68°F

20°C

Humidity 93%
Wind Speed S 20 mph
Barometer 29.87 in (1011.4 mb)
Dewpoint 66°F (19°C)
Visibility 8.00 mi
Last update 23 Jun 8:53 am EDT
Extended Forecast for

3 Miles NNE Siasconset MA

  • Today

    Today: Showers and possibly a thunderstorm. High near 70. West wind 8 to 13 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 70 °F

    Showers

  • Tonight

    Tonight: Showers and possibly a thunderstorm. Patchy fog after 11pm. Low around 61. North wind 8 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 61 °F

    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: A chance of showers, mainly before 7am. Mostly cloudy through mid morning, then gradual clearing, with a high near 70. North wind 7 to 10 mph becoming west in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 70 °F

    Chance
    Showers then
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 64. Southwest wind 7 to 9 mph.

    Low: 64 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 70. South wind 3 to 8 mph.

    High: 70 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 62. South wind around 7 mph.

    Low: 62 °F

    Partly Cloudy

  • Friday

    Friday: A chance of showers between 11am and 1pm. Partly sunny, with a high near 68. South wind 7 to 11 mph. Chance of precipitation is 30%.

    High: 68 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers after 9pm. Mostly cloudy, with a low around 65. South wind 8 to 10 mph. Chance of precipitation is 50%.

    Low: 65 °F

    Chance
    Showers

  • Saturday

    Saturday: Showers likely, mainly before 2pm. Mostly cloudy, with a high near 70. Southwest wind 6 to 8 mph becoming southeast in the afternoon. Chance of precipitation is 60%.

    High: 70 °F

    Showers
    Likely

Detailed Forecast

Today
Showers and possibly a thunderstorm. High near 70. West wind 8 to 13 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Tonight
Showers and possibly a thunderstorm. Patchy fog after 11pm. Low around 61. North wind 8 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday
A chance of showers, mainly before 7am. Mostly cloudy through mid morning, then gradual clearing, with a high near 70. North wind 7 to 10 mph becoming west in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Mostly clear, with a low around 64. Southwest wind 7 to 9 mph.
Thursday
Sunny, with a high near 70. South wind 3 to 8 mph.
Thursday Night
Partly cloudy, with a low around 62. South wind around 7 mph.
Friday
A chance of showers between 11am and 1pm. Partly sunny, with a high near 68. South wind 7 to 11 mph. Chance of precipitation is 30%.
Friday Night
A chance of showers after 9pm. Mostly cloudy, with a low around 65. South wind 8 to 10 mph. Chance of precipitation is 50%.
Saturday
Showers likely, mainly before 2pm. Mostly cloudy, with a high near 70. Southwest wind 6 to 8 mph becoming southeast in the afternoon. Chance of precipitation is 60%.
Saturday Night
A chance of showers before 5am. Mostly cloudy, with a low around 62. Southwest wind around 6 mph becoming northwest after midnight. Chance of precipitation is 40%.
Sunday
Mostly sunny, with a high near 68. North wind around 8 mph.
Sunday Night
Partly cloudy, with a low around 62. South wind around 5 mph becoming northwest after midnight.
Monday
Mostly sunny, with a high near 70. North wind around 6 mph becoming south in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Siasconset MA
 41.31°N 69.99°W (Elev. 49 ft)
Last Update:
8:54 am EDT Jun 23, 2026
Forecast Valid:
9am EDT Jun 23, 2026-6pm EDT Jun 29, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation