Hazardous Coastal Conditions for the Mid-Atlantic; Storm System Approaching Southern Alaska

A Nor'easter will create hazardous marine and coastal conditions along the Mid-Atlantic coast through mid-week, with significant coastal flooding and beach erosion possible. Meanwhile, another strong storm system is forecast to bring high winds and heavy precipitation to portions of southern Alaska. Elsewhere, relatively benign weather is expected through the first half of the work week. Read More >

Current conditions at

Nantucket, Nantucket Memorial Airport (KACK)

Lat: 41.25°NLon: 70.06°WElev: 46ft.

Fair

46°F

8°C

Humidity 68%
Wind Speed NE 5 mph
Barometer 30.56 in (1034.9 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 18 Oct 5:53 pm EDT
Extended Forecast for

Siasconset MA

  • Tonight

    Tonight: Clear, with a low around 45. East wind around 10 mph.

    Low: 45 °F

    Clear

  • Monday

    Monday: Increasing clouds, with a high near 58. Northeast wind 15 to 17 mph.

    High: 58 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: A chance of showers, mainly between 7pm and 5am.  Cloudy, with a low around 52. Breezy, with a northeast wind 16 to 21 mph.  Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 52 °F

    Chance
    Showers and
    Breezy

  • Tuesday

    Tuesday: A slight chance of showers between 11am and 1pm.  Mostly cloudy, with a high near 58. Breezy, with a northeast wind 21 to 23 mph, with gusts as high as 34 mph.  Chance of precipitation is 20%.

    High: 58 °F

    Slight Chance
    Showers and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 51. Breezy, with a northeast wind around 23 mph, with gusts as high as 34 mph.

    Low: 51 °F

    Mostly Cloudy
    and Breezy

  • Wednesday

    Wednesday: A chance of showers, mainly after 2pm.  Mostly cloudy, with a high near 57. Breezy, with a northeast wind 22 to 24 mph, with gusts as high as 36 mph.  Chance of precipitation is 30%.

    High: 57 °F

    Breezy.
    Mostly Cloudy
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers.  Cloudy, with a low around 50. Breezy, with a northeast wind 18 to 21 mph, with gusts as high as 31 mph.  Chance of precipitation is 50%.

    Low: 50 °F

    Chance
    Showers and
    Breezy

  • Thursday

    Thursday: A chance of showers before 4pm.  Mostly cloudy, with a high near 58. Breezy, with a north wind 17 to 21 mph, with gusts as high as 31 mph.  Chance of precipitation is 40%.

    High: 58 °F

    Chance
    Showers and
    Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 48. North wind 14 to 18 mph, with gusts as high as 28 mph.

    Low: 48 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 45. East wind around 10 mph.
Monday
Increasing clouds, with a high near 58. Northeast wind 15 to 17 mph.
Monday Night
A chance of showers, mainly between 7pm and 5am. Cloudy, with a low around 52. Breezy, with a northeast wind 16 to 21 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
A slight chance of showers between 11am and 1pm. Mostly cloudy, with a high near 58. Breezy, with a northeast wind 21 to 23 mph, with gusts as high as 34 mph. Chance of precipitation is 20%.
Tuesday Night
Mostly cloudy, with a low around 51. Breezy, with a northeast wind around 23 mph, with gusts as high as 34 mph.
Wednesday
A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 57. Breezy, with a northeast wind 22 to 24 mph, with gusts as high as 36 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of showers. Cloudy, with a low around 50. Breezy, with a northeast wind 18 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 50%.
Thursday
A chance of showers before 4pm. Mostly cloudy, with a high near 58. Breezy, with a north wind 17 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 40%.
Thursday Night
Partly cloudy, with a low around 48. North wind 14 to 18 mph, with gusts as high as 28 mph.
Friday
Mostly sunny, with a high near 55. Breezy, with a north wind 17 to 21 mph, with gusts as high as 31 mph.
Friday Night
A chance of showers. Partly cloudy, with a low around 47. North wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 54. North wind 14 to 17 mph.
Saturday Night
Partly cloudy, with a low around 48. Northeast wind 6 to 9 mph.
Sunday
Sunny, with a high near 57. North wind 8 to 10 mph becoming west in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
Siasconset MA
 41.26°N 70°W (Elev. 52 ft)
2:43 pm EDT Oct 18, 2026
6pm EDT Oct 18, 2026-6pm EDT Oct 25, 2026
 
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Additional Resources

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