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

46°F

8°C

Humidity 100%
Wind Speed SW 13 mph
Barometer 30.16 in (1021.1 mb)
Dewpoint 46°F (8°C)
Visibility 0.50 mi
Wind Chill40°F (4°C)
Last update 3 Apr 5:53 pm EDT
Extended Forecast for

Siasconset MA

  • Tonight

    Tonight: Patchy drizzle. The drizzle could be heavy at times. Patchy dense fog. Otherwise, cloudy, with a low around 43. Southwest wind 14 to 16 mph, with gusts as high as 26 mph.

    Low: 43 °F

    Patchy
    Drizzle and
    Patchy Dense
    Fog

  • Saturday

    Saturday: Patchy drizzle before 9am. Patchy fog before 10am. Otherwise, increasing clouds, with a high near 52. West wind 8 to 14 mph becoming northeast in the afternoon.

    High: 52 °F

    Patchy
    Drizzle and
    Patchy Fog
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers after 10pm. Patchy fog after 1am. Otherwise, cloudy, with a low around 39. Southeast wind around 11 mph. Chance of precipitation is 20%.

    Low: 39 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Sunday

    Sunday: Showers, mainly after 3pm. Patchy fog after 3pm. High near 54. Breezy, with a southwest wind 14 to 21 mph, with gusts as high as 37 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 54 °F

    Slight Chance
    Showers then
    Showers and
    Patchy Fog

  • Sunday Night

    Sunday Night: Showers, mainly before 8pm. Patchy fog before 8pm. Low around 40. Southwest wind 10 to 14 mph becoming northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 80%.

    Low: 40 °F

    Showers and
    Patchy Fog
    then Chance
    Showers

  • Monday

    Monday: Sunny, with a high near 47. West wind 13 to 15 mph.

    High: 47 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 39. West wind 6 to 11 mph.

    Low: 39 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of rain showers after 11am, mixing with snow after 5pm. Mostly sunny, with a high near 45. Southwest wind 6 to 10 mph. Chance of precipitation is 30%.

    High: 45 °F

    Chance
    Showers then
    Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 33. North wind 8 to 10 mph.

    Low: 33 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy drizzle. The drizzle could be heavy at times. Patchy dense fog. Otherwise, cloudy, with a low around 43. Southwest wind 14 to 16 mph, with gusts as high as 26 mph.
Saturday
Patchy drizzle before 9am. Patchy fog before 10am. Otherwise, increasing clouds, with a high near 52. West wind 8 to 14 mph becoming northeast in the afternoon.
Saturday Night
A slight chance of showers after 10pm. Patchy fog after 1am. Otherwise, cloudy, with a low around 39. Southeast wind around 11 mph. Chance of precipitation is 20%.
Sunday
Showers, mainly after 3pm. Patchy fog after 3pm. High near 54. Breezy, with a southwest wind 14 to 21 mph, with gusts as high as 37 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Showers, mainly before 8pm. Patchy fog before 8pm. Low around 40. Southwest wind 10 to 14 mph becoming northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 80%.
Monday
Sunny, with a high near 47. West wind 13 to 15 mph.
Monday Night
Mostly clear, with a low around 39. West wind 6 to 11 mph.
Tuesday
A chance of rain showers after 11am, mixing with snow after 5pm. Mostly sunny, with a high near 45. Southwest wind 6 to 10 mph. Chance of precipitation is 30%.
Tuesday Night
Partly cloudy, with a low around 33. North wind 8 to 10 mph.
Wednesday
Sunny, with a high near 41. North wind 7 to 10 mph.
Wednesday Night
Mostly clear, with a low around 35. South wind 6 to 8 mph.
Thursday
Mostly sunny, with a high near 48. South wind 9 to 11 mph.
Thursday Night
Partly cloudy, with a low around 43. South wind around 11 mph.
Friday
Mostly sunny, with a high near 51. Southwest wind 9 to 11 mph becoming south in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Siasconset MA
 41.28°N 70°W (Elev. 49 ft)
Last Update:
2:51 pm EDT Apr 3, 2026
Forecast Valid:
6pm EDT Apr 3, 2026-6pm EDT Apr 10, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation