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.

Fair

45°F

7°C

Humidity 83%
Wind Speed S 12 mph
Barometer 30.26 in (1024.8 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 9 Jan 1:53 pm EST
Extended Forecast for

2 Miles S Siasconset MA

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 46. South wind around 11 mph.

    High: 46 °F

    Mostly Cloudy

  • Tonight

    Tonight: A chance of rain between 9pm and 2am. Patchy fog after 11pm. Otherwise, cloudy, with a low around 37. South wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Chance Rain
    and Patchy
    Fog

  • Saturday

    Saturday: A chance of rain, mainly after 4pm. Patchy fog before 10am, then patchy fog after 5pm. Otherwise, mostly cloudy, with a high near 45. Northwest wind around 7 mph becoming east in the afternoon. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 45 °F

    Patchy Fog
    then Chance
    Rain and
    Patchy Fog

  • Saturday Night

    Saturday Night: Rain. Patchy fog before 7pm. Low around 38. East wind 8 to 11 mph becoming southwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    Low: 38 °F

    Rain and
    Patchy Fog

  • Sunday

    Sunday: Rain, mainly before 2pm. High near 44. West wind 10 to 13 mph. Chance of precipitation is 80%.

    High: 44 °F

    Rain

  • Sunday Night

    Sunday Night: A slight chance of rain showers before midnight, then a slight chance of snow showers between midnight and 2am. Partly cloudy, with a low around 31. Windy, with a west wind 20 to 28 mph, with gusts as high as 46 mph. Chance of precipitation is 20%.

    Low: 31 °F

    Slight Chance
    Rain/Snow and
    Windy

  • Monday

    Monday: Sunny, with a high near 39. Breezy, with a west wind 18 to 21 mph, with gusts as high as 34 mph.

    High: 39 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 33. West wind 10 to 16 mph.

    Low: 33 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 42. West wind 11 to 14 mph, with gusts as high as 24 mph.

    High: 42 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 46. South wind around 11 mph.
Tonight
A chance of rain between 9pm and 2am. Patchy fog after 11pm. Otherwise, cloudy, with a low around 37. South wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A chance of rain, mainly after 4pm. Patchy fog before 10am, then patchy fog after 5pm. Otherwise, mostly cloudy, with a high near 45. Northwest wind around 7 mph becoming east in the afternoon. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Rain. Patchy fog before 7pm. Low around 38. East wind 8 to 11 mph becoming southwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Sunday
Rain, mainly before 2pm. High near 44. West wind 10 to 13 mph. Chance of precipitation is 80%.
Sunday Night
A slight chance of rain showers before midnight, then a slight chance of snow showers between midnight and 2am. Partly cloudy, with a low around 31. Windy, with a west wind 20 to 28 mph, with gusts as high as 46 mph. Chance of precipitation is 20%.
Monday
Sunny, with a high near 39. Breezy, with a west wind 18 to 21 mph, with gusts as high as 34 mph.
Monday Night
Partly cloudy, with a low around 33. West wind 10 to 16 mph.
Tuesday
Sunny, with a high near 42. West wind 11 to 14 mph, with gusts as high as 24 mph.
Tuesday Night
Partly cloudy, with a low around 35. Southwest wind 10 to 13 mph, with gusts as high as 23 mph.
Wednesday
Mostly cloudy, with a high near 44. Southwest wind 10 to 14 mph, with gusts as high as 25 mph.
Wednesday Night
A chance of showers. Cloudy, with a low around 33. Southwest wind around 8 mph. Chance of precipitation is 40%.
Thursday
A chance of rain. Mostly cloudy, with a high near 37. Northwest wind 8 to 11 mph. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Siasconset MA
 41.24°N 70.01°W (Elev. 0 ft)
Last Update:
1:56 pm EST Jan 9, 2026
Forecast Valid:
2pm EST Jan 9, 2026-6pm EST Jan 15, 2026
 
Forecast Discussion
 
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Additional Resources

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