National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Nantucket, Nantucket Memorial Airport (KACK)

Lat: 41.25°NLon: 70.06°WElev: 46ft.

Fog/Mist

45°F

7°C

Humidity 100%
Wind Speed Calm
Barometer 29.96 in (1014.3 mb)
Dewpoint 45°F (7°C)
Visibility 4.00 mi
Last update 19 Apr 12:53 am EDT
Extended Forecast for

3 Miles NNE Siasconset MA

  • Overnight

    Overnight: Patchy drizzle after 2am. Patchy fog. Otherwise, cloudy, with a low around 46. Light south wind.

    Low: 46 °F

    Patchy
    Drizzle and
    Patchy Fog

  • Sunday

    Sunday: Showers, mainly after 3pm. Patchy fog. High near 55. South wind 11 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 55 °F

    Showers and
    Patchy Fog

  • Sunday Night

    Sunday Night: Showers likely, mainly before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 43. Northwest wind 11 to 17 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 43 °F

    Showers
    Likely then
    Partly Cloudy

  • Monday

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

    High: 49 °F

    Sunny

  • Monday Night

    Monday Night: A slight chance of showers between 9pm and midnight. Mostly cloudy, with a low around 39. West wind 7 to 14 mph becoming north after midnight. Chance of precipitation is 20%.

    Low: 39 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 44. North wind 7 to 14 mph.

    High: 44 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 40. Southwest wind 5 to 11 mph.

    Low: 40 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers after 9am. Mostly cloudy, with a high near 50. Southwest wind around 15 mph. Chance of precipitation is 30%.

    High: 50 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 45. Northwest wind around 10 mph.

    Low: 45 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Patchy drizzle after 2am. Patchy fog. Otherwise, cloudy, with a low around 46. Light south wind.
Sunday
Showers, mainly after 3pm. Patchy fog. High near 55. South wind 11 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Showers likely, mainly before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 43. Northwest wind 11 to 17 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Sunny, with a high near 49. West wind around 9 mph.
Monday Night
A slight chance of showers between 9pm and midnight. Mostly cloudy, with a low around 39. West wind 7 to 14 mph becoming north after midnight. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 44. North wind 7 to 14 mph.
Tuesday Night
Partly cloudy, with a low around 40. Southwest wind 5 to 11 mph.
Wednesday
A chance of showers after 9am. Mostly cloudy, with a high near 50. Southwest wind around 15 mph. Chance of precipitation is 30%.
Wednesday Night
Mostly cloudy, with a low around 45. Northwest wind around 10 mph.
Thursday
Mostly sunny, with a high near 51. Northwest wind 8 to 11 mph.
Thursday Night
Partly cloudy, with a low around 45. West wind 7 to 9 mph becoming northwest after midnight.
Friday
Mostly sunny, with a high near 51. North wind around 10 mph.
Friday Night
Partly cloudy, with a low around 46. East wind around 8 mph becoming west after midnight.
Saturday
Mostly sunny, with a high near 51. Northeast wind around 10 mph.
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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:
6:31 pm EDT Apr 18, 2026
Forecast Valid:
1am EDT Apr 19, 2026-6pm EDT Apr 25, 2026
 
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Additional Resources

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Chance of Precipitation