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 96%
Wind Speed NW 20 G 33 mph
Barometer 29.78 in (1008.6 mb)
Dewpoint 32°F (0°C)
Visibility 2.00 mi
Wind Chill21°F (-6°C)
Last update 12 Mar 9:53 pm EDT
Extended Forecast for

2 Miles ENE Siasconset MA

  • Tonight

    Tonight: Snow, possibly mixed with rain before 1am, then a slight chance of snow between 1am and 2am. Patchy fog before midnight. Low around 30. Northwest wind around 16 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of less than one inch possible.

    Low: 30 °F

    Rain/Snow and
    Patchy Fog
    then Chance
    Snow

  • Friday

    Friday: Increasing clouds, with a high near 44. Northwest wind around 10 mph becoming southwest in the afternoon.

    High: 44 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: A slight chance of rain. Cloudy, then gradually becoming partly cloudy, with a low around 36. South wind 11 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.

    Low: 36 °F

    Slight Chance
    Rain

  • Saturday

    Saturday: Sunny, with a high near 43. Breezy, with a west wind 18 to 22 mph, with gusts as high as 41 mph.

    High: 43 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 33. West wind 10 to 14 mph, with gusts as high as 30 mph.

    Low: 33 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 43. North wind 6 to 8 mph becoming east in the afternoon.

    High: 43 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of rain after 3am. 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

  • Monday

    Monday: Rain, mainly after 8am. High near 51. Breezy, with a south wind 23 to 25 mph, with gusts as high as 41 mph. Chance of precipitation is 90%.

    High: 51 °F

    Rain and
    Breezy

  • Monday Night

    Monday Night: Rain. Low around 37. Windy, with a south wind 24 to 28 mph, with gusts as high as 43 mph. Chance of precipitation is 90%.

    Low: 37 °F

    Rain and
    Windy

Detailed Forecast

Tonight
Snow, possibly mixed with rain before 1am, then a slight chance of snow between 1am and 2am. Patchy fog before midnight. Low around 30. Northwest wind around 16 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of less than one inch possible.
Friday
Increasing clouds, with a high near 44. Northwest wind around 10 mph becoming southwest in the afternoon.
Friday Night
A slight chance of rain. Cloudy, then gradually becoming partly cloudy, with a low around 36. South wind 11 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.
Saturday
Sunny, with a high near 43. Breezy, with a west wind 18 to 22 mph, with gusts as high as 41 mph.
Saturday Night
Mostly clear, with a low around 33. West wind 10 to 14 mph, with gusts as high as 30 mph.
Sunday
Partly sunny, with a high near 43. North wind 6 to 8 mph becoming east in the afternoon.
Sunday Night
A chance of rain after 3am. 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 8am. High near 51. Breezy, with a south wind 23 to 25 mph, with gusts as high as 41 mph. Chance of precipitation is 90%.
Monday Night
Rain. Low around 37. Windy, with a south wind 24 to 28 mph, with gusts as high as 43 mph. Chance of precipitation is 90%.
Tuesday
Rain likely, mainly before 9am. Mostly cloudy, with a high near 44. Breezy, with a west wind 18 to 20 mph. Chance of precipitation is 60%.
Tuesday Night
Partly cloudy, with a low around 27. Breezy, with a west wind 16 to 21 mph.
Wednesday
Partly sunny, with a high near 35. West wind 9 to 13 mph.
Wednesday Night
Partly cloudy, with a low around 29. West wind around 7 mph.
Thursday
Mostly sunny, with a high near 38. Southeast wind 7 to 9 mph.
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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:
4:59 pm EDT Mar 12, 2026
Forecast Valid:
10pm EDT Mar 12, 2026-6pm EDT Mar 19, 2026
 
Forecast Discussion
 
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