National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Nantucket, Nantucket Memorial Airport (KACK)

Lat: 41.25°NLon: 70.06°WElev: 46ft.

Overcast

36°F

2°C

Humidity 70%
Wind Speed E 15 G 37 mph
Barometer 29.96 in (1014.4 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 22 Feb 5:53 pm EST
Extended Forecast for

2 Miles NNE Siasconset MA

Coastal Flood Watch February 23, 01:00pm until February 23, 08:00pm
Blizzard Warning until February 24, 07:00am
Coastal Flood Warning February 23, 01:00am until February 23, 07:00am
Click here for hazard details and duration
Coastal Flood Watch
Blizzard Warning
Coastal Flood Warning
  •  
    Blizzard Warning until February 24, 07:00am

    NOW until 7:00am Tue

    Blizzard Warning

  • Tonight

    Low: 31 °F

    Heavy Snow
    and Areas
    Blowing Snow

  • Monday

    Monday: Snow before 9am, then rain between 9am and 1pm, then snow after 1pm. Areas of blowing snow before 9am, then areas of blowing snow after 1pm. High near 35. Very windy, with a northeast wind 42 to 47 mph decreasing to 34 to 39 mph in the afternoon. Winds could gust as high as 75 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    High: 35 °F

    Rain/Snow and
    Areas Blowing
    Snow

  • Monday Night

    Monday Night: Snow likely, mainly before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 25. Windy, with a northwest wind 26 to 31 mph decreasing to 18 to 23 mph after midnight. Winds could gust as high as 60 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 25 °F

    Snow Likely
    and Windy
    then Slight
    Chance Snow
    and Blustery

  • Tuesday

    Tuesday: Mostly sunny, with a high near 30. Northwest wind 13 to 17 mph.

    High: 30 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 24. West wind 9 to 13 mph.

    Low: 24 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Rain and snow likely before 10am, then rain. High near 39. South wind 9 to 14 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 39 °F

    Rain/Snow
    then Rain
    Likely

  • Wednesday Night

    Wednesday Night: A chance of rain before 8pm. Partly cloudy, with a low around 32. Southwest wind 11 to 13 mph. Chance of precipitation is 30%.

    Low: 32 °F

    Chance Rain
    then Partly
    Cloudy

  • Thursday

    Thursday: A chance of rain after 3pm. Partly sunny, with a high near 41. West wind around 10 mph. Chance of precipitation is 30%.

    High: 41 °F

    Mostly Sunny
    then Chance
    Rain

Detailed Forecast

Tonight
Snow, mainly after 9pm. The snow could be heavy at times. Areas of blowing snow after 2am. Low around 31. Very windy, with an east wind 18 to 28 mph increasing to 40 to 50 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 4 to 8 inches possible.
Monday
Snow before 9am, then rain between 9am and 1pm, then snow after 1pm. Areas of blowing snow before 9am, then areas of blowing snow after 1pm. High near 35. Very windy, with a northeast wind 42 to 47 mph decreasing to 34 to 39 mph in the afternoon. Winds could gust as high as 75 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Monday Night
Snow likely, mainly before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 25. Windy, with a northwest wind 26 to 31 mph decreasing to 18 to 23 mph after midnight. Winds could gust as high as 60 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Tuesday
Mostly sunny, with a high near 30. Northwest wind 13 to 17 mph.
Tuesday Night
Partly cloudy, with a low around 24. West wind 9 to 13 mph.
Wednesday
Rain and snow likely before 10am, then rain. High near 39. South wind 9 to 14 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Wednesday Night
A chance of rain before 8pm. Partly cloudy, with a low around 32. Southwest wind 11 to 13 mph. Chance of precipitation is 30%.
Thursday
A chance of rain after 3pm. Partly sunny, with a high near 41. West wind around 10 mph. Chance of precipitation is 30%.
Thursday Night
Rain likely, mainly after 9pm. Mostly cloudy, with a low around 33. South wind 11 to 15 mph. Chance of precipitation is 70%.
Friday
A chance of rain before 4pm. Partly sunny, with a high near 41. West wind 10 to 14 mph. Chance of precipitation is 50%.
Friday Night
Partly cloudy, with a low around 31. West wind 7 to 9 mph.
Saturday
Sunny, with a high near 39. West wind 6 to 10 mph becoming southwest in the afternoon.
Saturday Night
Partly cloudy, with a low around 33. South wind around 10 mph.
Sunday
Partly sunny, with a high near 40. Southwest wind around 11 mph becoming west in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Siasconset MA
 41.31°N 69.99°W (Elev. 49 ft)
Last Update:
2:39 pm EST Feb 22, 2026
Forecast Valid:
6pm EST Feb 22, 2026-6pm EST Mar 1, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation