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

43°F

6°C

Humidity 60%
Wind Speed SW 12 mph
Barometer 30.37 in (1028.4 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 25 Mar 1:53 pm EDT
Extended Forecast for

2 Miles ENE Siasconset MA

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 47. Southwest wind around 10 mph.

    High: 47 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 40. South wind 9 to 13 mph, with gusts as high as 28 mph.

    Low: 40 °F

    Mostly Cloudy

  • Thursday

    Thursday: Cloudy, then gradually becoming mostly sunny, with a high near 52. Breezy, with a south wind 16 to 22 mph, with gusts as high as 34 mph.

    High: 52 °F

    Decreasing
    Clouds and
    Breezy

  • Thursday Night

    Thursday Night: Rain, mainly after 3am. Low around 40. Breezy, with a southwest wind 17 to 22 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 40 °F

    Slight Chance
    Rain and
    Breezy then
    Rain

  • Friday

    Friday: Rain, mainly before noon. High near 45. West wind 13 to 15 mph becoming north in the afternoon. Chance of precipitation is 80%.

    High: 45 °F

    Rain then
    Chance Rain

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 28. North wind 10 to 13 mph.

    Low: 28 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 36. North wind 8 to 11 mph.

    High: 36 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 29. West wind 5 to 9 mph.

    Low: 29 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 41. West wind around 13 mph.

    High: 41 °F

    Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 47. Southwest wind around 10 mph.
Tonight
Mostly cloudy, with a low around 40. South wind 9 to 13 mph, with gusts as high as 28 mph.
Thursday
Cloudy, then gradually becoming mostly sunny, with a high near 52. Breezy, with a south wind 16 to 22 mph, with gusts as high as 34 mph.
Thursday Night
Rain, mainly after 3am. Low around 40. Breezy, with a southwest wind 17 to 22 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Rain, mainly before noon. High near 45. West wind 13 to 15 mph becoming north in the afternoon. Chance of precipitation is 80%.
Friday Night
Mostly cloudy, with a low around 28. North wind 10 to 13 mph.
Saturday
Partly sunny, with a high near 36. North wind 8 to 11 mph.
Saturday Night
Mostly clear, with a low around 29. West wind 5 to 9 mph.
Sunday
Sunny, with a high near 41. West wind around 13 mph.
Sunday Night
Partly cloudy, with a low around 35. Southwest wind around 10 mph.
Monday
Partly sunny, with a high near 46. Southwest wind 11 to 17 mph.
Monday Night
Mostly cloudy, with a low around 38. Southwest wind around 17 mph.
Tuesday
Partly sunny, with a high near 45. West wind 13 to 15 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Siasconset MA
 41.28°N 69.97°W (Elev. 56 ft)
Last Update:
7:53 am EDT Mar 25, 2026
Forecast Valid:
2pm EDT Mar 25, 2026-6pm EDT Mar 31, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation