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

46°F

8°C

Humidity 96%
Wind Speed NE 16 mph
Barometer 30.08 in (1018.4 mb)
Dewpoint 45°F (7°C)
Visibility 5.00 mi
Wind Chill39°F (4°C)
Last update 18 Apr 7:53 am EDT
Extended Forecast for

2 Miles ENE Siasconset MA

  • Today

    Today: Areas of fog before noon, then areas of fog after 1pm. Otherwise, cloudy, with a high near 49. Northeast wind 13 to 16 mph.

    High: 49 °F

    Areas Fog

  • Tonight

    Tonight: Patchy fog. Otherwise, cloudy, with a low around 43. Northeast wind 5 to 7 mph becoming calm.

    Low: 43 °F

    Patchy Fog

  • Sunday

    Sunday: Rain, mainly after 3pm. Patchy fog. High near 54. South wind 9 to 15 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 41. Northwest wind 10 to 13 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 41 °F

    Rain then
    Chance Rain

  • Monday

    Monday: Sunny, with a high near 49. West wind around 9 mph.

    High: 49 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 37. West wind 6 to 11 mph becoming north after midnight.

    Low: 37 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 46. North wind 8 to 10 mph.

    High: 46 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 38. Southwest wind 7 to 11 mph.

    Low: 38 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 52. Southwest wind 11 to 13 mph.

    High: 52 °F

    Partly Sunny

Detailed Forecast

Today
Areas of fog before noon, then areas of fog after 1pm. Otherwise, cloudy, with a high near 49. Northeast wind 13 to 16 mph.
Tonight
Patchy fog. Otherwise, cloudy, with a low around 43. Northeast wind 5 to 7 mph becoming calm.
Sunday
Rain, mainly after 3pm. Patchy fog. High near 54. South wind 9 to 15 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 41. Northwest wind 10 to 13 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Sunny, with a high near 49. West wind around 9 mph.
Monday Night
Partly cloudy, with a low around 37. West wind 6 to 11 mph becoming north after midnight.
Tuesday
Sunny, with a high near 46. North wind 8 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 38. Southwest wind 7 to 11 mph.
Wednesday
Partly sunny, with a high near 52. Southwest wind 11 to 13 mph.
Wednesday Night
Partly cloudy, with a low around 44. Southwest wind around 8 mph becoming northwest after midnight.
Thursday
Mostly sunny, with a high near 52. North wind around 9 mph.
Thursday Night
Partly cloudy, with a low around 43. Southwest wind 6 to 8 mph becoming northwest in the evening.
Friday
Mostly sunny, with a high near 51. North wind around 9 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Siasconset MA
 41.28°N 69.97°W (Elev. 56 ft)
Last Update:
2:29 am EDT Apr 18, 2026
Forecast Valid:
8am EDT Apr 18, 2026-6pm EDT Apr 24, 2026
 
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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