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

38°F

3°C

Humidity 86%
Wind Speed SW 13 mph
Barometer 30.14 in (1020.7 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 20 Mar 3:53 am EDT
Extended Forecast for

2 Miles ENE Siasconset MA

  • Today

    Today: Mostly sunny, with a high near 46. West wind 6 to 11 mph becoming south 12 to 17 mph in the afternoon.

    High: 46 °F

    Mostly Sunny

  • Tonight

    Tonight: Showers, mainly after midnight. Low around 39. Breezy, with a southwest wind 15 to 23 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 39 °F

    Chance
    Showers and
    Breezy then
    Showers

  • Saturday

    Saturday: A chance of showers before 8am. Cloudy through mid morning, then gradual clearing, with a high near 45. West wind 13 to 18 mph becoming north in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 45 °F

    Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 37. North wind 7 to 14 mph.

    Low: 37 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of rain after 2pm. Mostly cloudy, with a high near 45. South wind 8 to 13 mph. Chance of precipitation is 20%.

    High: 45 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Sunday Night

    Sunday Night: Rain likely, mainly after 4am. Cloudy, with a low around 38. Southwest wind around 11 mph becoming northwest after midnight. Chance of precipitation is 60%.

    Low: 38 °F

    Rain Likely

  • Monday

    Monday: Rain likely, mainly before 8am. Mostly cloudy, with a high near 43. North wind 14 to 16 mph. Chance of precipitation is 60%.

    High: 43 °F

    Rain Likely

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 31. North wind around 15 mph.

    Low: 31 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 38. North wind 9 to 14 mph.

    High: 38 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 46. West wind 6 to 11 mph becoming south 12 to 17 mph in the afternoon.
Tonight
Showers, mainly after midnight. Low around 39. Breezy, with a southwest wind 15 to 23 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
A chance of showers before 8am. Cloudy through mid morning, then gradual clearing, with a high near 45. West wind 13 to 18 mph becoming north in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Mostly cloudy, with a low around 37. North wind 7 to 14 mph.
Sunday
A slight chance of rain after 2pm. Mostly cloudy, with a high near 45. South wind 8 to 13 mph. Chance of precipitation is 20%.
Sunday Night
Rain likely, mainly after 4am. Cloudy, with a low around 38. Southwest wind around 11 mph becoming northwest after midnight. Chance of precipitation is 60%.
Monday
Rain likely, mainly before 8am. Mostly cloudy, with a high near 43. North wind 14 to 16 mph. Chance of precipitation is 60%.
Monday Night
Mostly cloudy, with a low around 31. North wind around 15 mph.
Tuesday
Mostly sunny, with a high near 38. North wind 9 to 14 mph.
Tuesday Night
Mostly cloudy, with a low around 33. Southwest wind 8 to 10 mph.
Wednesday
Partly sunny, with a high near 43. Southwest wind 11 to 14 mph.
Wednesday Night
Mostly cloudy, with a low around 32. Northwest wind around 13 mph.
Thursday
A chance of rain. Partly sunny, with a high near 45. Northwest wind around 14 mph becoming south in the morning. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Siasconset MA
 41.28°N 69.97°W (Elev. 56 ft)
Last Update:
2:34 am EDT Mar 20, 2026
Forecast Valid:
4am EDT Mar 20, 2026-6pm EDT Mar 26, 2026
 
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