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

50°F

10°C

Humidity 93%
Wind Speed SW 10 mph
Barometer 29.79 in (1008.7 mb)
Dewpoint 48°F (9°C)
Visibility 8.00 mi
Wind Chill46°F (8°C)
Last update 16 Apr 11:53 pm EDT
Extended Forecast for

2 Miles NNE Siasconset MA

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly cloudy, with a low around 49. Southwest wind around 16 mph.

    Low: 49 °F

    Patchy Fog

  • Friday

    Friday: A chance of showers, mainly after 11am. Cloudy, with a high near 57. West wind 8 to 14 mph becoming northeast in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 57 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers between 1am and 3am. Patchy fog before 10pm, then patchy fog after 1am. Otherwise, mostly cloudy, with a low around 44. Northeast wind 6 to 11 mph. Chance of precipitation is 20%.

    Low: 44 °F

    Slight Chance
    Showers and
    Patchy Fog
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 50. Northeast wind around 9 mph.

    High: 50 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Saturday Night

    Saturday Night: Cloudy, with a low around 45. East wind around 6 mph becoming south after midnight.

    Low: 45 °F

    Cloudy

  • Sunday

    Sunday: A chance of showers, mainly after noon. Cloudy, with a high near 54. South wind 10 to 14 mph. Chance of precipitation is 50%.

    High: 54 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Sunday Night

    Sunday Night: Showers likely, mainly before midnight. Mostly cloudy, with a low around 40. Northwest wind around 15 mph. Chance of precipitation is 60%.

    Low: 40 °F

    Showers
    Likely

  • Monday

    Monday: Mostly sunny, with a high near 46. West wind around 14 mph.

    High: 46 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 36. Northwest wind 10 to 13 mph.

    Low: 36 °F

    Partly Cloudy

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 49. Southwest wind around 16 mph.
Friday
A chance of showers, mainly after 11am. Cloudy, with a high near 57. West wind 8 to 14 mph becoming northeast in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A slight chance of showers between 1am and 3am. Patchy fog before 10pm, then patchy fog after 1am. Otherwise, mostly cloudy, with a low around 44. Northeast wind 6 to 11 mph. Chance of precipitation is 20%.
Saturday
Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 50. Northeast wind around 9 mph.
Saturday Night
Cloudy, with a low around 45. East wind around 6 mph becoming south after midnight.
Sunday
A chance of showers, mainly after noon. Cloudy, with a high near 54. South wind 10 to 14 mph. Chance of precipitation is 50%.
Sunday Night
Showers likely, mainly before midnight. Mostly cloudy, with a low around 40. Northwest wind around 15 mph. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 46. West wind around 14 mph.
Monday Night
Partly cloudy, with a low around 36. Northwest wind 10 to 13 mph.
Tuesday
Sunny, with a high near 46. Northwest wind around 10 mph becoming west in the afternoon.
Tuesday Night
Partly cloudy, with a low around 40. Southwest wind 10 to 15 mph.
Wednesday
Partly sunny, with a high near 53. Southwest wind around 14 mph.
Wednesday Night
Partly cloudy, with a low around 43. Southwest wind around 9 mph becoming northwest after midnight.
Thursday
Mostly sunny, with a high near 51. Northwest wind around 9 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Siasconset MA
 41.31°N 69.99°W (Elev. 49 ft)
Last Update:
6:34 pm EDT Apr 16, 2026
Forecast Valid:
12am EDT Apr 17, 2026-6pm EDT Apr 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation