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.

Light Rain Fog/Mist

33°F

1°C

Humidity 96%
Wind Speed N 12 mph
Barometer 29.68 in (1005.2 mb)
Dewpoint 32°F (0°C)
Visibility 4.00 mi
Wind Chill24°F (-4°C)
Last update 21 Feb 3:53 am EST
Extended Forecast for

2 Miles ENE Siasconset MA

Winter Storm Watch February 22, 01:00pm until February 24, 07:00am
Coastal Flood Watch February 23, 01:00am until February 24, 07:00am
Click here for hazard details and duration
Winter Storm Watch
Coastal Flood Watch

  • Overnight

    Overnight: A chance of rain showers before 5am, then a chance of rain and snow showers. Cloudy, with a low around 33. North wind around 9 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 33 °F

    Chance
    Rain/Snow

  • Saturday

    Saturday: A slight chance of rain and snow showers before 9am, then a chance of snow showers between 9am and noon. Cloudy, with a high near 35. North wind 8 to 10 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 35 °F

    Chance
    Rain/Snow
    then Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 29. North wind around 6 mph.

    Low: 29 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of snow after 4pm. Cloudy, with a high near 36. East wind 7 to 13 mph. Chance of precipitation is 20%.

    High: 36 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: A chance of snow before 10pm, then rain, possibly mixed with snow. Low around 31. Windy, with an east wind 17 to 22 mph increasing to 27 to 32 mph after midnight. Winds could gust as high as 50 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    Low: 31 °F

    Rain/Snow and
    Windy

  • Monday

    Monday: Snow, possibly mixed with rain. High near 36. Windy, with a northeast wind 36 to 39 mph, with gusts as high as 60 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

    High: 36 °F

    Rain/Snow and
    Windy

  • Monday Night

    Monday Night: Snow, mainly before 11pm. The snow could be heavy at times. Low around 25. Windy, with a northwest wind 25 to 30 mph decreasing to 16 to 21 mph after midnight. Winds could gust as high as 46 mph. Chance of precipitation is 80%.

    Low: 25 °F

    Heavy Snow
    and Windy
    then Chance
    Snow and
    Blustery

  • Tuesday

    Tuesday: Mostly sunny, with a high near 32. West wind 10 to 14 mph.

    High: 32 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 23. West wind around 10 mph.

    Low: 23 °F

    Partly Cloudy

Detailed Forecast

Overnight
A chance of rain showers before 5am, then a chance of rain and snow showers. Cloudy, with a low around 33. North wind around 9 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Saturday
A slight chance of rain and snow showers before 9am, then a chance of snow showers between 9am and noon. Cloudy, with a high near 35. North wind 8 to 10 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Saturday Night
Mostly cloudy, with a low around 29. North wind around 6 mph.
Sunday
A slight chance of snow after 4pm. Cloudy, with a high near 36. East wind 7 to 13 mph. Chance of precipitation is 20%.
Sunday Night
A chance of snow before 10pm, then rain, possibly mixed with snow. Low around 31. Windy, with an east wind 17 to 22 mph increasing to 27 to 32 mph after midnight. Winds could gust as high as 50 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Monday
Snow, possibly mixed with rain. High near 36. Windy, with a northeast wind 36 to 39 mph, with gusts as high as 60 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.
Monday Night
Snow, mainly before 11pm. The snow could be heavy at times. Low around 25. Windy, with a northwest wind 25 to 30 mph decreasing to 16 to 21 mph after midnight. Winds could gust as high as 46 mph. Chance of precipitation is 80%.
Tuesday
Mostly sunny, with a high near 32. West wind 10 to 14 mph.
Tuesday Night
Partly cloudy, with a low around 23. West wind around 10 mph.
Wednesday
A chance of rain after 3pm. Mostly cloudy, with a high near 39. West wind 8 to 11 mph becoming south in the afternoon. Chance of precipitation is 30%.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 32. Southwest wind around 11 mph. Chance of precipitation is 30%.
Thursday
A chance of rain. Mostly cloudy, with a high near 41. Southwest wind 11 to 15 mph. Chance of precipitation is 50%.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 31. Southwest wind 10 to 13 mph. Chance of precipitation is 50%.
Friday
A chance of rain. Partly sunny, with a high near 39. West wind 9 to 11 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:
3:33 am EST Feb 21, 2026
Forecast Valid:
4am EST Feb 21, 2026-6pm EST Feb 27, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation