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.

Overcast

68°F

20°C

Humidity 96%
Wind Speed SW 9 mph
Barometer 30.02 in (1016.5 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 18 Sep 3:53 am EDT
Extended Forecast for

2 Miles NE Siasconset MA

  • Overnight

    Overnight: A chance of showers. Cloudy, with a low around 67. Southwest wind around 13 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 67 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 71. West wind around 11 mph becoming north in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 71 °F

    Chance
    Showers then
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 59. Light northeast wind becoming north 12 to 17 mph in the evening.

    Low: 59 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 63. Northeast wind 9 to 15 mph.

    High: 63 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 57. Northeast wind around 6 mph.

    Low: 57 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers, mainly after 3pm. Mostly cloudy, with a high near 66. Southeast wind 8 to 10 mph. Chance of precipitation is 30%.

    High: 66 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Showers likely, mainly after 7pm. Patchy fog after 11pm. Otherwise, cloudy, with a low around 61. East wind around 8 mph. Chance of precipitation is 70%.

    Low: 61 °F

    Showers
    Likely and
    Patchy Fog

  • Monday

    Monday: A chance of showers. The rain could be heavy at times. Mostly cloudy, with a high near 66. Northeast wind 11 to 15 mph. Chance of precipitation is 50%.

    High: 66 °F

    Heavy Rain

  • Monday Night

    Monday Night: A chance of showers. Mostly cloudy, with a low around 59. Breezy, with a northeast wind 15 to 20 mph. Chance of precipitation is 40%.

    Low: 59 °F

    Chance
    Showers and
    Breezy

Detailed Forecast

Overnight
A chance of showers. Cloudy, with a low around 67. Southwest wind around 13 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A chance of showers, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 71. West wind around 11 mph becoming north in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Partly cloudy, with a low around 59. Light northeast wind becoming north 12 to 17 mph in the evening.
Saturday
Mostly sunny, with a high near 63. Northeast wind 9 to 15 mph.
Saturday Night
Partly cloudy, with a low around 57. Northeast wind around 6 mph.
Sunday
A chance of showers, mainly after 3pm. Mostly cloudy, with a high near 66. Southeast wind 8 to 10 mph. Chance of precipitation is 30%.
Sunday Night
Showers likely, mainly after 7pm. Patchy fog after 11pm. Otherwise, cloudy, with a low around 61. East wind around 8 mph. Chance of precipitation is 70%.
Monday
A chance of showers. The rain could be heavy at times. Mostly cloudy, with a high near 66. Northeast wind 11 to 15 mph. Chance of precipitation is 50%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 59. Breezy, with a northeast wind 15 to 20 mph. Chance of precipitation is 40%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 63. Breezy, with a northeast wind 21 to 23 mph. Chance of precipitation is 40%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 58. Breezy, with a northeast wind 22 to 25 mph. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 63. Windy, with a northeast wind 23 to 28 mph.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 59. Windy, with a northeast wind 25 to 28 mph. Chance of precipitation is 30%.
Thursday
A chance of showers. Partly sunny, with a high near 63. Windy, with a northeast wind 22 to 26 mph. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NE Siasconset MA
 41.3°N 69.96°W (Elev. 0 ft)
Last Update:
3:02 am EDT Sep 18, 2026
Forecast Valid:
4am EDT Sep 18, 2026-6pm EDT Sep 24, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation