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

33°F

1°C

Humidity 92%
Wind Speed W 3 mph
Barometer NA
Dewpoint 31°F (-1°C)
Visibility 5.00 mi
Last update 18 Jan 2:53 am EST
Extended Forecast for

Nantucket MA

  • Overnight

    Overnight: Mostly cloudy, with a low around 34. Light west wind.

    Low: 34 °F

    Mostly Cloudy

  • Sunday

    Sunday: Snow before 11am, then rain. Patchy fog after 10am. High near 39. Light and variable wind becoming northeast 5 to 8 mph in the morning. Chance of precipitation is 100%. Little or no snow accumulation expected.

    High: 39 °F

    Rain/Snow and
    Patchy Fog
    then Rain and
    Patchy Fog

  • Sunday Night

    Sunday Night: Rain before midnight, then snow. Patchy fog. Low around 30. Northeast wind 8 to 10 mph becoming northwest after midnight. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

    Low: 30 °F

    Rain and
    Patchy Fog
    then Snow and
    Patchy Fog

  • M.L.King Day

    M.L.King Day: A chance of snow before 7am, then a chance of snow showers between 7am and 10am. Partly sunny, with a high near 37. West wind 10 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 37 °F

    Chance Snow
    then Partly
    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 24. Breezy, with a west wind 16 to 22 mph.

    Low: 24 °F

    Mostly Cloudy
    and Breezy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 28. Breezy, with a west wind 11 to 16 mph increasing to 18 to 23 mph in the afternoon.

    High: 28 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 19. Northwest wind 9 to 18 mph.

    Low: 19 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 39. West wind 8 to 13 mph becoming southwest in the afternoon.

    High: 39 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 33. Southwest wind around 14 mph.

    Low: 33 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 34. Light west wind.
Sunday
Snow before 11am, then rain. Patchy fog after 10am. High near 39. Light and variable wind becoming northeast 5 to 8 mph in the morning. Chance of precipitation is 100%. Little or no snow accumulation expected.
Sunday Night
Rain before midnight, then snow. Patchy fog. Low around 30. Northeast wind 8 to 10 mph becoming northwest after midnight. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.
M.L.King Day
A chance of snow before 7am, then a chance of snow showers between 7am and 10am. Partly sunny, with a high near 37. West wind 10 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Monday Night
Mostly cloudy, with a low around 24. Breezy, with a west wind 16 to 22 mph.
Tuesday
Mostly sunny, with a high near 28. Breezy, with a west wind 11 to 16 mph increasing to 18 to 23 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 19. Northwest wind 9 to 18 mph.
Wednesday
Mostly sunny, with a high near 39. West wind 8 to 13 mph becoming southwest in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 33. Southwest wind around 14 mph.
Thursday
A chance of showers before 11am. Partly sunny, with a high near 41. Southwest wind 13 to 15 mph. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 24. Northwest wind around 15 mph.
Friday
Mostly sunny, with a high near 35. West wind 10 to 13 mph.
Friday Night
Mostly cloudy, with a low around 28. Southwest wind around 10 mph.
Saturday
A chance of rain and snow showers. Mostly cloudy, with a high near 37. Southwest wind 10 to 13 mph. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Nantucket MA
 41.28°N 70.12°W (Elev. 49 ft)
Last Update:
2:21 am EST Jan 18, 2026
Forecast Valid:
3am EST Jan 18, 2026-6pm EST Jan 24, 2026
 
Forecast Discussion
 
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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