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

42°F

6°C

Humidity 96%
Wind Speed E 14 mph
Barometer NA
Dewpoint 41°F (5°C)
Visibility 7.00 mi
Wind Chill35°F (2°C)
Last update 7 Jan 12:53 am EST
Extended Forecast for

3 Miles NNE Siasconset MA

  • Overnight

    Overnight: A chance of rain. Patchy fog after 3am. Otherwise, cloudy, with a low around 37. Southeast wind around 10 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Chance Rain
    and Patchy
    Fog

  • Wednesday

    Wednesday: A slight chance of rain between noon and 1pm. Patchy dense fog. Otherwise, cloudy, with a high near 42. West wind 9 to 14 mph. Chance of precipitation is 20%.

    High: 42 °F

    Slight Chance
    Rain and
    Patchy Dense
    Fog

  • Wednesday Night

    Wednesday Night: Patchy fog before 10pm. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 35. West wind 11 to 13 mph.

    Low: 35 °F

    Patchy Fog
    then Partly
    Cloudy

  • Thursday

    Thursday: Sunny, with a high near 38. Northwest wind 6 to 13 mph.

    High: 38 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 37. Calm wind becoming southwest around 5 mph after midnight.

    Low: 37 °F

    Partly Cloudy

  • Friday

    Friday: A slight chance of rain after 3pm. Partly sunny, with a high near 45. South wind 8 to 17 mph. Chance of precipitation is 20%.

    High: 45 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Friday Night

    Friday Night: Rain likely, mainly between 10pm and 2am. Cloudy, with a low around 41. South wind 14 to 18 mph. Chance of precipitation is 60%.

    Low: 41 °F

    Rain Likely

  • Saturday

    Saturday: Rain likely, mainly after 1pm. Cloudy, with a high near 47. West wind 10 to 13 mph becoming northeast in the afternoon. Chance of precipitation is 70%.

    High: 47 °F

    Rain Likely

  • Saturday Night

    Saturday Night: Rain. Low around 41. Southeast wind 15 to 18 mph becoming southwest after midnight. Chance of precipitation is 90%.

    Low: 41 °F

    Rain

Detailed Forecast

Overnight
A chance of rain. Patchy fog after 3am. Otherwise, cloudy, with a low around 37. Southeast wind around 10 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A slight chance of rain between noon and 1pm. Patchy dense fog. Otherwise, cloudy, with a high near 42. West wind 9 to 14 mph. Chance of precipitation is 20%.
Wednesday Night
Patchy fog before 10pm. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 35. West wind 11 to 13 mph.
Thursday
Sunny, with a high near 38. Northwest wind 6 to 13 mph.
Thursday Night
Partly cloudy, with a low around 37. Calm wind becoming southwest around 5 mph after midnight.
Friday
A slight chance of rain after 3pm. Partly sunny, with a high near 45. South wind 8 to 17 mph. Chance of precipitation is 20%.
Friday Night
Rain likely, mainly between 10pm and 2am. Cloudy, with a low around 41. South wind 14 to 18 mph. Chance of precipitation is 60%.
Saturday
Rain likely, mainly after 1pm. Cloudy, with a high near 47. West wind 10 to 13 mph becoming northeast in the afternoon. Chance of precipitation is 70%.
Saturday Night
Rain. Low around 41. Southeast wind 15 to 18 mph becoming southwest after midnight. Chance of precipitation is 90%.
Sunday
Rain likely, mainly before 2pm. Mostly cloudy, with a high near 45. Southwest wind 16 to 18 mph. Chance of precipitation is 70%.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 32. Windy, with a west wind 21 to 26 mph. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 36. Breezy, with a west wind 18 to 24 mph.
Monday Night
Mostly clear, with a low around 32. West wind 15 to 17 mph.
Tuesday
Mostly sunny, with a high near 40. Southwest wind 15 to 18 mph.
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:
12:36 am EST Jan 7, 2026
Forecast Valid:
1am EST Jan 7, 2026-6pm EST Jan 13, 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