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.

Fog/Mist

48°F

9°C

Humidity 96%
Wind Speed SE 14 mph
Barometer 29.79 in (1008.6 mb)
Dewpoint 47°F (8°C)
Visibility 0.75 mi
Wind Chill42°F (6°C)
Last update 19 Apr 9:53 am EDT
Extended Forecast for

3 Miles NNE Siasconset MA

  • Today

    Today: Rain likely, with thunderstorms also possible after 3pm. Patchy fog. Otherwise, mostly cloudy, with a high near 55. Breezy, with a southwest wind 17 to 22 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 55 °F

    Rain Likely
    and Patchy
    Fog

  • Tonight

    Tonight: A chance of rain before 8pm, then a slight chance of showers between 8pm and 9pm. Patchy fog before 11pm. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 43. Breezy, with a northwest wind 16 to 23 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 43 °F

    Chance Rain
    and Patchy
    Fog then
    Partly Cloudy
    and Breezy

  • Monday

    Monday: Sunny, with a high near 48. Southwest wind 7 to 9 mph.

    High: 48 °F

    Sunny

  • Monday Night

    Monday Night: A slight chance of showers before 2am. Mostly cloudy, with a low around 39. Southwest wind 7 to 15 mph becoming north after midnight. Chance of precipitation is 20%.

    Low: 39 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 45. North wind 8 to 15 mph.

    High: 45 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 40. Southeast wind 6 to 10 mph becoming southwest after midnight.

    Low: 40 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 49. South wind 11 to 14 mph.

    High: 49 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 45. South wind 8 to 10 mph becoming east after midnight.

    Low: 45 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 51. Northwest wind 8 to 10 mph.

    High: 51 °F

    Mostly Sunny

Detailed Forecast

Today
Rain likely, with thunderstorms also possible after 3pm. Patchy fog. Otherwise, mostly cloudy, with a high near 55. Breezy, with a southwest wind 17 to 22 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of rain before 8pm, then a slight chance of showers between 8pm and 9pm. Patchy fog before 11pm. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 43. Breezy, with a northwest wind 16 to 23 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Sunny, with a high near 48. Southwest wind 7 to 9 mph.
Monday Night
A slight chance of showers before 2am. Mostly cloudy, with a low around 39. Southwest wind 7 to 15 mph becoming north after midnight. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 45. North wind 8 to 15 mph.
Tuesday Night
Partly cloudy, with a low around 40. Southeast wind 6 to 10 mph becoming southwest after midnight.
Wednesday
Partly sunny, with a high near 49. South wind 11 to 14 mph.
Wednesday Night
Mostly cloudy, with a low around 45. South wind 8 to 10 mph becoming east after midnight.
Thursday
Mostly sunny, with a high near 51. Northwest wind 8 to 10 mph.
Thursday Night
Partly cloudy, with a low around 44. North wind 6 to 8 mph.
Friday
Mostly sunny, with a high near 50. North wind around 9 mph becoming east in the afternoon.
Friday Night
Partly cloudy, with a low around 45. South wind around 8 mph becoming northwest after midnight.
Saturday
Partly sunny, with a high near 50. North wind around 9 mph becoming east in the afternoon.
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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:
3:05 am EDT Apr 19, 2026
Forecast Valid:
10am EDT Apr 19, 2026-6pm EDT Apr 25, 2026
 
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Additional Resources

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