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 Snow

30°F

-1°C

Humidity 85%
Wind Speed W 8 mph
Barometer 30.06 in (1017.8 mb)
Dewpoint 26°F (-3°C)
Visibility 9.00 mi
Wind Chill22°F (-6°C)
Last update 15 Feb 1:53 am EST
Extended Forecast for

3 Miles NNE Siasconset MA

  • Overnight

    Overnight: Mostly clear, with a low around 28. West wind 8 to 10 mph.

    Low: 28 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 33. Northwest wind 9 to 13 mph becoming north in the afternoon.

    High: 33 °F

    Sunny

  • Sunday Night

    Sunday Night: A slight chance of snow after 4am. Increasing clouds, with a low around 30. East wind 6 to 10 mph. Chance of precipitation is 20%.

    Low: 30 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Washington's Birthday

    Washington's Birthday: A chance of snow, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 36. Northeast wind 10 to 13 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    High: 36 °F

    Chance Snow

  • Monday Night

    Monday Night: Partly cloudy, with a low around 33. Northeast wind 6 to 9 mph.

    Low: 33 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 37. Northwest wind 5 to 9 mph becoming southwest in the afternoon.

    High: 37 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 34. Southwest wind 6 to 8 mph.

    Low: 34 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain after 4pm. Mostly cloudy, with a high near 38. West wind around 6 mph becoming southeast in the afternoon. Chance of precipitation is 30%.

    High: 38 °F

    Mostly Cloudy
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: Rain before 3am, then rain and snow likely. Low around 34. East wind 8 to 16 mph becoming northeast after midnight. Chance of precipitation is 80%.

    Low: 34 °F

    Rain then
    Rain/Snow
    Likely

Detailed Forecast

Overnight
Mostly clear, with a low around 28. West wind 8 to 10 mph.
Sunday
Sunny, with a high near 33. Northwest wind 9 to 13 mph becoming north in the afternoon.
Sunday Night
A slight chance of snow after 4am. Increasing clouds, with a low around 30. East wind 6 to 10 mph. Chance of precipitation is 20%.
Washington's Birthday
A chance of snow, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 36. Northeast wind 10 to 13 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Monday Night
Partly cloudy, with a low around 33. Northeast wind 6 to 9 mph.
Tuesday
Partly sunny, with a high near 37. Northwest wind 5 to 9 mph becoming southwest in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 34. Southwest wind 6 to 8 mph.
Wednesday
A chance of rain after 4pm. Mostly cloudy, with a high near 38. West wind around 6 mph becoming southeast in the afternoon. Chance of precipitation is 30%.
Wednesday Night
Rain before 3am, then rain and snow likely. Low around 34. East wind 8 to 16 mph becoming northeast after midnight. Chance of precipitation is 80%.
Thursday
A chance of snow before 9am. Mostly cloudy, with a high near 38. Northeast wind 9 to 15 mph. Chance of precipitation is 40%.
Thursday Night
Mostly cloudy, with a low around 34. Northeast wind 7 to 9 mph.
Friday
A chance of rain. Mostly cloudy, with a high near 39. Southeast wind 10 to 14 mph. Chance of precipitation is 50%.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 33. Southeast wind around 16 mph becoming northwest after midnight. Chance of precipitation is 50%.
Saturday
A chance of snow. Mostly cloudy, with a high near 38. Northwest wind 15 to 17 mph. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Siasconset MA
 41.33°N 69.98°W (Elev. 0 ft)
Last Update:
1:20 am EST Feb 15, 2026
Forecast Valid:
2am EST Feb 15, 2026-6pm EST Feb 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation