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 76%
Wind Speed SW 7 mph
Barometer NA
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 17 Jan 2:53 am EST
Extended Forecast for

3 Miles NNE Siasconset MA

  • Overnight

    Overnight: Mostly cloudy, with a low around 33. South wind around 9 mph.

    Low: 33 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of rain before 1pm, then a slight chance of rain after 4pm. Partly sunny, with a high near 45. South wind 9 to 16 mph. Chance of precipitation is 20%.

    High: 45 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 37. West wind 7 to 15 mph.

    Low: 37 °F

    Mostly Cloudy

  • Sunday

    Sunday: Rain likely, mainly after noon. Cloudy, with a high near 40. Southwest wind 6 to 9 mph becoming north in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 40 °F

    Rain Likely

  • Sunday Night

    Sunday Night: Snow likely, mainly before 10pm. Mostly cloudy, with a low around 30. Northeast wind 7 to 15 mph becoming west after midnight. Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 30 °F

    Snow Likely
    then Chance
    Snow

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 36. Breezy, with a west wind 15 to 25 mph.

    High: 36 °F

    Mostly Sunny
    and Breezy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 22. Windy, with a west wind around 26 mph, with gusts as high as 39 mph.

    Low: 22 °F

    Mostly Cloudy
    and Windy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 27. Breezy, with a west wind 20 to 23 mph.

    High: 27 °F

    Mostly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 18. Breezy, with a west wind around 22 mph.

    Low: 18 °F

    Partly Cloudy
    and Breezy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 33. South wind around 9 mph.
Saturday
A slight chance of rain before 1pm, then a slight chance of rain after 4pm. Partly sunny, with a high near 45. South wind 9 to 16 mph. Chance of precipitation is 20%.
Saturday Night
Mostly cloudy, with a low around 37. West wind 7 to 15 mph.
Sunday
Rain likely, mainly after noon. Cloudy, with a high near 40. Southwest wind 6 to 9 mph becoming north in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Snow likely, mainly before 10pm. Mostly cloudy, with a low around 30. Northeast wind 7 to 15 mph becoming west after midnight. Chance of precipitation is 70%. Little or no snow accumulation expected.
M.L.King Day
Mostly sunny, with a high near 36. Breezy, with a west wind 15 to 25 mph.
Monday Night
Mostly cloudy, with a low around 22. Windy, with a west wind around 26 mph, with gusts as high as 39 mph.
Tuesday
Mostly sunny, with a high near 27. Breezy, with a west wind 20 to 23 mph.
Tuesday Night
Partly cloudy, with a low around 18. Breezy, with a west wind around 22 mph.
Wednesday
Partly sunny, with a high near 35. Southwest wind around 18 mph.
Wednesday Night
A chance of snow showers. Mostly cloudy, with a low around 30. Southwest wind around 16 mph. Chance of precipitation is 30%.
Thursday
A chance of snow showers. Mostly cloudy, with a high near 38. Breezy, with a southwest wind 16 to 20 mph. Chance of precipitation is 30%.
Thursday Night
A chance of snow showers. Mostly cloudy, with a low around 27. Northwest wind around 16 mph. Chance of precipitation is 30%.
Friday
A chance of snow showers. Mostly sunny, with a high near 34. Northwest wind around 15 mph. Chance of precipitation is 30%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Siasconset MA
 41.33°N 69.98°W (Elev. 0 ft)
Last Update:
3:43 pm EST Jan 16, 2026
Forecast Valid:
3am EST Jan 17, 2026-6pm EST Jan 23, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation