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.

Fog/Mist

40°F

4°C

Humidity 97%
Wind Speed W 5 mph
Barometer 29.69 in (1005.5 mb)
Dewpoint 39°F (4°C)
Visibility 3.00 mi
Wind Chill36°F (2°C)
Last update 11 Jan 12:53 pm EST
Extended Forecast for

2 Miles ESE Siasconset MA

  • This Afternoon

    This Afternoon: Isolated showers before 3pm. Cloudy, with a high near 43. West wind around 15 mph. Chance of precipitation is 20%.

    High: 43 °F

    Isolated
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 28. Breezy, with a west wind 21 to 25 mph, with gusts as high as 43 mph.

    Low: 28 °F

    Partly Cloudy
    and Breezy

  • Monday

    Monday: Sunny, with a high near 37. Breezy, with a west wind 15 to 22 mph, with gusts as high as 36 mph.

    High: 37 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 33. West wind 11 to 14 mph.

    Low: 33 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 42. West wind around 11 mph.

    High: 42 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37. South wind 9 to 14 mph.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 45. Southwest wind 11 to 15 mph.

    High: 45 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A chance of rain after 7pm. Cloudy, with a low around 37. South wind 7 to 9 mph. Chance of precipitation is 50%.

    Low: 37 °F

    Chance Rain

  • Thursday

    Thursday: A chance of rain. Mostly cloudy, with a high near 42. Southwest wind 8 to 11 mph. Chance of precipitation is 40%.

    High: 42 °F

    Chance Rain

Detailed Forecast

This Afternoon
Isolated showers before 3pm. Cloudy, with a high near 43. West wind around 15 mph. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 28. Breezy, with a west wind 21 to 25 mph, with gusts as high as 43 mph.
Monday
Sunny, with a high near 37. Breezy, with a west wind 15 to 22 mph, with gusts as high as 36 mph.
Monday Night
Partly cloudy, with a low around 33. West wind 11 to 14 mph.
Tuesday
Sunny, with a high near 42. West wind around 11 mph.
Tuesday Night
Mostly cloudy, with a low around 37. South wind 9 to 14 mph.
Wednesday
Mostly cloudy, with a high near 45. Southwest wind 11 to 15 mph.
Wednesday Night
A chance of rain after 7pm. Cloudy, with a low around 37. South wind 7 to 9 mph. Chance of precipitation is 50%.
Thursday
A chance of rain. Mostly cloudy, with a high near 42. Southwest wind 8 to 11 mph. Chance of precipitation is 40%.
Thursday Night
Rain likely before 4am, then snow likely. Mostly cloudy, with a low around 28. Northwest wind 11 to 17 mph. Chance of precipitation is 60%.
Friday
A chance of rain and snow. Partly sunny, with a high near 37. Breezy, with a northwest wind 15 to 20 mph. Chance of precipitation is 50%.
Friday Night
Mostly cloudy, with a low around 29. West wind 10 to 13 mph.
Saturday
Mostly sunny, with a high near 39. West wind 10 to 13 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Siasconset MA
 41.26°N 69.97°W (Elev. 39 ft)
Last Update:
1:23 pm EST Jan 11, 2026
Forecast Valid:
1pm EST Jan 11, 2026-6pm EST Jan 17, 2026
 
Forecast Discussion
 
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Additional Resources

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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