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

42°F

6°C

Humidity 71%
Wind Speed NW 17 G 25 mph
Barometer 29.98 in (1015.1 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 19 Apr 10:53 pm EDT
Extended Forecast for

3 Miles NNE Siasconset MA

  • Tonight

    Tonight: Mostly cloudy early, then gradual clearing, with a low around 43. Northwest wind 13 to 17 mph.

    Low: 43 °F

    Gradual
    Clearing

  • Monday

    Monday: Sunny, with a high near 49. West wind 7 to 9 mph.

    High: 49 °F

    Sunny

  • Monday Night

    Monday Night: A slight chance of showers. Mostly cloudy, with a low around 40. West wind 6 to 11 mph becoming north after midnight. Chance of precipitation is 20%.

    Low: 40 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 45. North wind 8 to 14 mph.

    High: 45 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 41. East wind 5 to 9 mph becoming southwest after midnight.

    Low: 41 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers, mainly before noon. Mostly cloudy, with a high near 48. South wind 10 to 14 mph. Chance of precipitation is 30%.

    High: 48 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 44. Southeast wind around 8 mph becoming east after midnight.

    Low: 44 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 50. Northwest wind 7 to 9 mph.

    High: 50 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 44. Northwest wind 5 to 7 mph.

    Low: 44 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy early, then gradual clearing, with a low around 43. Northwest wind 13 to 17 mph.
Monday
Sunny, with a high near 49. West wind 7 to 9 mph.
Monday Night
A slight chance of showers. Mostly cloudy, with a low around 40. West wind 6 to 11 mph becoming north after midnight. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 45. North wind 8 to 14 mph.
Tuesday Night
Partly cloudy, with a low around 41. East wind 5 to 9 mph becoming southwest after midnight.
Wednesday
A chance of showers, mainly before noon. Mostly cloudy, with a high near 48. South wind 10 to 14 mph. Chance of precipitation is 30%.
Wednesday Night
Mostly cloudy, with a low around 44. Southeast wind around 8 mph becoming east after midnight.
Thursday
Partly sunny, with a high near 50. Northwest wind 7 to 9 mph.
Thursday Night
Mostly cloudy, with a low around 44. Northwest wind 5 to 7 mph.
Friday
Mostly sunny, with a high near 49. North wind around 9 mph.
Friday Night
Partly cloudy, with a low around 44. Northeast wind around 7 mph.
Saturday
A chance of showers. Partly sunny, with a high near 49. Northeast wind around 10 mph. Chance of precipitation is 30%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 45. Southeast wind 7 to 9 mph becoming northeast in the evening. Chance of precipitation is 30%.
Sunday
A chance of showers. Partly sunny, with a high near 50. Northeast wind around 11 mph. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Siasconset MA
 41.33°N 69.98°W (Elev. 0 ft)
Last Update:
9:56 pm EDT Apr 19, 2026
Forecast Valid:
11pm EDT Apr 19, 2026-6pm EDT Apr 26, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation