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.

Overcast

48°F

9°C

Humidity 93%
Wind Speed SW 18 G 29 mph
Barometer NA
Dewpoint 46°F (8°C)
Visibility 8.00 mi
Wind Chill41°F (5°C)
Last update 9 Jan 11:53 pm EST
Extended Forecast for

2 Miles ENE Siasconset MA

  • Overnight

    Overnight: Showers likely before 2am. Patchy fog. Otherwise, cloudy, with a low around 37. West wind 13 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Showers
    Likely 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 6 to 8 mph becoming east in the afternoon. Chance of precipitation is 30%. 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 39. East wind 9 to 14 mph becoming southwest after midnight. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    Low: 39 °F

    Rain and
    Patchy Fog

  • Sunday

    Sunday: Rain, mainly before 2pm. High near 43. West wind 10 to 14 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 43 °F

    Rain

  • Sunday Night

    Sunday Night: A slight chance of snow showers between midnight and 3am. Partly cloudy, with a low around 31. Windy, with a west wind 20 to 28 mph, with gusts as high as 48 mph. Chance of precipitation is 20%.

    Low: 31 °F

    Slight Chance
    Snow Showers
    and Windy

  • Monday

    Monday: Sunny, with a high near 38. Breezy, with a west wind 18 to 20 mph, with gusts as high as 36 mph.

    High: 38 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 33. West wind 13 to 17 mph.

    Low: 33 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 41. West wind 13 to 15 mph.

    High: 41 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 36. Southwest wind around 14 mph.

    Low: 36 °F

    Partly Cloudy

Detailed Forecast

Overnight
Showers likely before 2am. Patchy fog. Otherwise, cloudy, with a low around 37. West wind 13 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. 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 6 to 8 mph becoming east in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Rain. Patchy fog before 7pm. Low around 39. East wind 9 to 14 mph becoming southwest after midnight. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Sunday
Rain, mainly before 2pm. High near 43. West wind 10 to 14 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
A slight chance of snow showers between midnight and 3am. Partly cloudy, with a low around 31. Windy, with a west wind 20 to 28 mph, with gusts as high as 48 mph. Chance of precipitation is 20%.
Monday
Sunny, with a high near 38. Breezy, with a west wind 18 to 20 mph, with gusts as high as 36 mph.
Monday Night
Partly cloudy, with a low around 33. West wind 13 to 17 mph.
Tuesday
Sunny, with a high near 41. West wind 13 to 15 mph.
Tuesday Night
Partly cloudy, with a low around 36. Southwest wind around 14 mph.
Wednesday
Mostly cloudy, with a high near 44. Southwest wind 11 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
A chance of showers. Cloudy, with a low around 34. Southwest wind around 9 mph. Chance of precipitation is 40%.
Thursday
A chance of rain. Mostly cloudy, with a high near 37. Northwest wind 9 to 11 mph. Chance of precipitation is 30%.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 27. North wind 10 to 13 mph. Chance of precipitation is 40%.
Friday
A chance of snow. Mostly cloudy, with a high near 33. North wind around 15 mph. Chance of precipitation is 40%.
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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:
7:25 pm EST Jan 9, 2026
Forecast Valid:
12am EST Jan 10, 2026-6pm EST Jan 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation