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

45°F

7°C

Humidity 100%
Wind Speed NE 15 G 24 mph
Barometer 29.98 in (1015.3 mb)
Dewpoint 45°F (7°C)
Visibility 3.00 mi
Wind Chill38°F (3°C)
Last update 18 Apr 4:53 am EDT
Extended Forecast for

3 Miles NNE Siasconset MA

  • Today

    Today: Areas of fog before noon, then areas of fog after 1pm. Otherwise, cloudy, with a high near 48. Northeast wind 14 to 18 mph.

    High: 48 °F

    Areas Fog

  • Tonight

    Tonight: Patchy fog. Otherwise, cloudy, with a low around 45. Northeast wind 5 to 10 mph becoming southwest after midnight.

    Low: 45 °F

    Patchy Fog

  • Sunday

    Sunday: Rain, mainly after 3pm. Patchy fog. High near 54. South wind 10 to 17 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 54 °F

    Chance Rain
    and Patchy
    Fog then Rain
    and Patchy
    Fog

  • Sunday Night

    Sunday Night: Rain, mainly before 2am. Low around 43. Northwest wind 13 to 16 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 43 °F

    Rain then
    Chance Rain

  • Monday

    Monday: Sunny, with a high near 48. West wind 8 to 10 mph.

    High: 48 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 39. West wind 7 to 14 mph becoming north after midnight.

    Low: 39 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 45. North wind 8 to 13 mph.

    High: 45 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 40. Southwest wind 7 to 14 mph.

    Low: 40 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 51. Southwest wind 13 to 15 mph.

    High: 51 °F

    Partly Sunny

Detailed Forecast

Today
Areas of fog before noon, then areas of fog after 1pm. Otherwise, cloudy, with a high near 48. Northeast wind 14 to 18 mph.
Tonight
Patchy fog. Otherwise, cloudy, with a low around 45. Northeast wind 5 to 10 mph becoming southwest after midnight.
Sunday
Rain, mainly after 3pm. Patchy fog. High near 54. South wind 10 to 17 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Rain, mainly before 2am. Low around 43. Northwest wind 13 to 16 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Sunny, with a high near 48. West wind 8 to 10 mph.
Monday Night
Partly cloudy, with a low around 39. West wind 7 to 14 mph becoming north after midnight.
Tuesday
Sunny, with a high near 45. North wind 8 to 13 mph.
Tuesday Night
Partly cloudy, with a low around 40. Southwest wind 7 to 14 mph.
Wednesday
Partly sunny, with a high near 51. Southwest wind 13 to 15 mph.
Wednesday Night
Partly cloudy, with a low around 45. Southwest wind around 9 mph becoming northwest after midnight.
Thursday
Mostly sunny, with a high near 51. North wind 8 to 10 mph.
Thursday Night
Partly cloudy, with a low around 45. Southwest wind 6 to 8 mph becoming northwest after midnight.
Friday
Mostly sunny, with a high near 50. North wind around 10 mph.
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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:
2:29 am EDT Apr 18, 2026
Forecast Valid:
5am EDT Apr 18, 2026-6pm EDT Apr 24, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation