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.

Fair

36°F

2°C

Humidity 82%
Wind Speed E 10 mph
Barometer 29.98 in (1015.2 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 20 Feb 7:53 am EST
Extended Forecast for

2 Miles ENE Siasconset MA

  • Today

    Today: A slight chance of rain before noon, then snow likely between noon and 4pm, then rain likely after 4pm. Cloudy, with a high near 38. East wind 8 to 13 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 38 °F

    Slight Chance
    Rain then
    Rain/Snow
    Likely

  • Tonight

    Tonight: Rain before 1am, then a chance of snow. Low around 30. East wind 10 to 14 mph becoming north after midnight. Chance of precipitation is 100%. Little or no snow accumulation expected.

    Low: 30 °F

    Rain then
    Chance
    Rain/Snow

  • Saturday

    Saturday: A slight chance of snow and freezing rain before 8am, then a slight chance of snow between 8am and 1pm. Mostly cloudy, with a high near 34. North wind 7 to 10 mph. Chance of precipitation is 20%.

    High: 34 °F

    Slight Chance
    Wintry Mix
    then Slight
    Chance Snow

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 28. North wind around 7 mph.

    Low: 28 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of snow after 3pm. Mostly cloudy, with a high near 35. Northeast wind 8 to 11 mph. Chance of precipitation is 20%.

    High: 35 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: Snow likely, possibly mixed with rain, becoming all snow after 5am. Cloudy, with a low around 30. Northeast wind 14 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of 2 to 4 inches possible.

    Low: 30 °F

    Chance Snow
    then
    Rain/Snow
    Likely

  • Monday

    Monday: Snow likely before 7am, then snow likely, possibly mixed with rain between 7am and 10am, then snow likely after 10am. Cloudy, with a high near 34. Breezy, with a northeast wind 22 to 24 mph, with gusts as high as 37 mph. Chance of precipitation is 70%.

    High: 34 °F

    Breezy.
    Rain/Snow
    Likely then
    Snow Likely

  • Monday Night

    Monday Night: A chance of snow before midnight. Mostly cloudy, with a low around 26. Blustery, with a northwest wind 14 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 40%.

    Low: 26 °F

    Chance Snow
    and Blustery
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 33. Northwest wind 8 to 11 mph.

    High: 33 °F

    Mostly Sunny

Detailed Forecast

Today
A slight chance of rain before noon, then snow likely between noon and 4pm, then rain likely after 4pm. Cloudy, with a high near 38. East wind 8 to 13 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Tonight
Rain before 1am, then a chance of snow. Low around 30. East wind 10 to 14 mph becoming north after midnight. Chance of precipitation is 100%. Little or no snow accumulation expected.
Saturday
A slight chance of snow and freezing rain before 8am, then a slight chance of snow between 8am and 1pm. Mostly cloudy, with a high near 34. North wind 7 to 10 mph. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 28. North wind around 7 mph.
Sunday
A slight chance of snow after 3pm. Mostly cloudy, with a high near 35. Northeast wind 8 to 11 mph. Chance of precipitation is 20%.
Sunday Night
Snow likely, possibly mixed with rain, becoming all snow after 5am. Cloudy, with a low around 30. Northeast wind 14 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of 2 to 4 inches possible.
Monday
Snow likely before 7am, then snow likely, possibly mixed with rain between 7am and 10am, then snow likely after 10am. Cloudy, with a high near 34. Breezy, with a northeast wind 22 to 24 mph, with gusts as high as 37 mph. Chance of precipitation is 70%.
Monday Night
A chance of snow before midnight. Mostly cloudy, with a low around 26. Blustery, with a northwest wind 14 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 40%.
Tuesday
Mostly sunny, with a high near 33. Northwest wind 8 to 11 mph.
Tuesday Night
Partly cloudy, with a low around 25. West wind around 8 mph.
Wednesday
Mostly cloudy, with a high near 40. South wind 6 to 11 mph.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 34. Southwest wind 11 to 14 mph. Chance of precipitation is 50%.
Thursday
A chance of rain. Mostly cloudy, with a high near 40. Southwest wind 11 to 14 mph. Chance of precipitation is 50%.
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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:
7:35 am EST Feb 20, 2026
Forecast Valid:
8am EST Feb 20, 2026-6pm EST Feb 26, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation