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

35°F

2°C

Humidity 64%
Wind Speed W 13 G 30 mph
Barometer NA
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 11 Jan 10:53 pm EST
Extended Forecast for

Siasconset MA

  • Tonight

    Tonight: Partly cloudy, with a low around 28. Breezy, with a west wind 21 to 23 mph, with gusts as high as 41 mph.

    Low: 28 °F

    Partly Cloudy
    and Breezy

  • Monday

    Monday: Sunny, with a high near 38. Breezy, with a west wind 14 to 21 mph, with gusts as high as 34 mph.

    High: 38 °F

    Sunny and
    Breezy then
    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 32. West wind 9 to 11 mph, with gusts as high as 21 mph.

    Low: 32 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 43. West wind around 10 mph.

    High: 43 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 36. Southwest wind 8 to 13 mph.

    Low: 36 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of rain after 3pm. Mostly cloudy, with a high near 45. Southwest wind 10 to 14 mph. Chance of precipitation is 20%.

    High: 45 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain after 7pm. Cloudy, with a low around 37. South wind 6 to 8 mph. Chance of precipitation is 50%.

    Low: 37 °F

    Chance Rain

  • Thursday

    Thursday: A chance of rain. Mostly cloudy, with a high near 43. Southwest wind 6 to 10 mph. Chance of precipitation is 40%.

    High: 43 °F

    Chance Rain

  • Thursday Night

    Thursday Night: Rain likely before 4am, then snow likely. Mostly cloudy, with a low around 27. Northwest wind 10 to 15 mph. Chance of precipitation is 60%.

    Low: 27 °F

    Rain Likely
    then
    Rain/Snow
    Likely

Detailed Forecast

Tonight
Partly cloudy, with a low around 28. Breezy, with a west wind 21 to 23 mph, with gusts as high as 41 mph.
Monday
Sunny, with a high near 38. Breezy, with a west wind 14 to 21 mph, with gusts as high as 34 mph.
Monday Night
Partly cloudy, with a low around 32. West wind 9 to 11 mph, with gusts as high as 21 mph.
Tuesday
Sunny, with a high near 43. West wind around 10 mph.
Tuesday Night
Mostly cloudy, with a low around 36. Southwest wind 8 to 13 mph.
Wednesday
A slight chance of rain after 3pm. Mostly cloudy, with a high near 45. Southwest wind 10 to 14 mph. Chance of precipitation is 20%.
Wednesday Night
A chance of rain after 7pm. Cloudy, with a low around 37. South wind 6 to 8 mph. Chance of precipitation is 50%.
Thursday
A chance of rain. Mostly cloudy, with a high near 43. Southwest wind 6 to 10 mph. Chance of precipitation is 40%.
Thursday Night
Rain likely before 4am, then snow likely. Mostly cloudy, with a low around 27. Northwest wind 10 to 15 mph. Chance of precipitation is 60%.
Friday
A chance of snow before 2pm. Partly sunny, with a high near 37. Northwest wind 13 to 17 mph. Chance of precipitation is 50%.
Friday Night
Mostly cloudy, with a low around 27. West wind around 10 mph.
Saturday
Mostly sunny, with a high near 40. West wind 8 to 11 mph.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 32. Southwest wind around 8 mph. Chance of precipitation is 30%.
Sunday
A chance of rain. Mostly cloudy, with a high near 40. South wind 9 to 13 mph becoming southwest in the afternoon. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Siasconset MA
 41.27°N 70.03°W (Elev. 52 ft)
Last Update:
7:18 pm EST Jan 11, 2026
Forecast Valid:
11pm EST Jan 11, 2026-6pm EST Jan 18, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation