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.

Light Rain Fog

49°F

9°C

Humidity 100%
Wind Speed S 16 mph
Barometer 29.72 in (1006.4 mb)
Dewpoint 49°F (9°C)
Visibility 0.25 mi
Wind Chill43°F (6°C)
Last update 12 Mar 12:53 am EDT
Extended Forecast for

2 Miles E Siasconset MA

  • Overnight

    Overnight: A slight chance of showers after 3am. Patchy dense fog. Otherwise, cloudy, with a low around 42. South wind around 17 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.

    Low: 42 °F

    Slight Chance
    Showers and
    Patchy Dense
    Fog

  • Thursday

    Thursday: A chance of showers, mainly after 9am. Patchy fog before 1pm. Otherwise, cloudy, with a high near 48. Southwest wind 14 to 17 mph becoming northwest in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 40%.

    High: 48 °F

    Chance
    Showers and
    Patchy Fog

  • Thursday Night

    Thursday Night: A chance of rain and snow showers before 11pm, then a slight chance of snow showers between 11pm and midnight. Cloudy during the early evening, then gradual clearing, with a low around 30. Northwest wind around 15 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    Low: 30 °F

    Chance
    Rain/Snow
    then Partly
    Cloudy

  • Friday

    Friday: Increasing clouds, with a high near 43. Northwest wind 8 to 11 mph becoming southwest in the afternoon.

    High: 43 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 36. South wind 13 to 16 mph, with gusts as high as 26 mph.

    Low: 36 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 43. Breezy, with a west wind 16 to 20 mph.

    High: 43 °F

    Sunny then
    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 32. Northwest wind 11 to 15 mph.

    Low: 32 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly cloudy, with a high near 43. North wind around 7 mph becoming southeast in the afternoon.

    High: 43 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A chance of rain after 2am. Mostly cloudy, with a low around 37. Breezy, with a southeast wind 13 to 20 mph. Chance of precipitation is 30%.

    Low: 37 °F

    Mostly Cloudy
    then Chance
    Rain and
    Breezy

Detailed Forecast

Overnight
A slight chance of showers after 3am. Patchy dense fog. Otherwise, cloudy, with a low around 42. South wind around 17 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.
Thursday
A chance of showers, mainly after 9am. Patchy fog before 1pm. Otherwise, cloudy, with a high near 48. Southwest wind 14 to 17 mph becoming northwest in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 40%.
Thursday Night
A chance of rain and snow showers before 11pm, then a slight chance of snow showers between 11pm and midnight. Cloudy during the early evening, then gradual clearing, with a low around 30. Northwest wind around 15 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Friday
Increasing clouds, with a high near 43. Northwest wind 8 to 11 mph becoming southwest in the afternoon.
Friday Night
Mostly cloudy, with a low around 36. South wind 13 to 16 mph, with gusts as high as 26 mph.
Saturday
Sunny, with a high near 43. Breezy, with a west wind 16 to 20 mph.
Saturday Night
Mostly clear, with a low around 32. Northwest wind 11 to 15 mph.
Sunday
Mostly cloudy, with a high near 43. North wind around 7 mph becoming southeast in the afternoon.
Sunday Night
A chance of rain after 2am. Mostly cloudy, with a low around 37. Breezy, with a southeast wind 13 to 20 mph. Chance of precipitation is 30%.
Monday
Rain, mainly after 7am. High near 50. Breezy, with a south wind 23 to 25 mph, with gusts as high as 39 mph. Chance of precipitation is 80%.
Monday Night
Rain likely. Cloudy, with a low around 33. Breezy, with a south wind 20 to 24 mph becoming west after midnight. Winds could gust as high as 37 mph. Chance of precipitation is 70%.
Tuesday
A chance of rain. Mostly cloudy, with a high near 40. West wind around 16 mph. Chance of precipitation is 30%.
Tuesday Night
Partly cloudy, with a low around 26. Northwest wind 14 to 16 mph.
Wednesday
Mostly sunny, with a high near 34. West wind around 10 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles E Siasconset MA
 41.28°N 69.97°W (Elev. 56 ft)
Last Update:
4:43 pm EDT Mar 11, 2026
Forecast Valid:
1am EDT Mar 12, 2026-6pm EDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation