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.

Fog/Mist

69°F

21°C

Humidity 100%
Wind Speed SW 8 mph
Barometer 30.06 in (1018.0 mb)
Dewpoint 69°F (21°C)
Visibility 3.00 mi
Last update 16 Jul 12:53 am EDT
Extended Forecast for

4 Miles N Siasconset MA

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly cloudy, with a low around 71. Southwest wind around 8 mph.

    Low: 71 °F

    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog between 4pm and 5pm. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 78. Southwest wind 7 to 10 mph.

    High: 78 °F

    Patchy Fog

  • Wednesday Night

    Wednesday Night: Patchy fog. Otherwise, mostly cloudy, with a low around 72. Southwest wind 9 to 11 mph.

    Low: 72 °F

    Patchy Fog

  • Thursday

    Thursday: Showers and possibly a thunderstorm before 9am, then a slight chance of showers after 1pm. Patchy fog before 9am. High near 78. Southwest wind 14 to 17 mph. Chance of precipitation is 80%.

    High: 78 °F

    Showers and
    Patchy Fog
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: A slight chance of showers before 2am. Partly cloudy, with a low around 72. Southwest wind around 16 mph. Chance of precipitation is 20%.

    Low: 72 °F

    Slight Chance
    Showers

  • Friday

    Friday: Sunny, with a high near 79. West wind around 14 mph becoming north in the afternoon.

    High: 79 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 68. North wind around 9 mph.

    Low: 68 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 74. Northeast wind around 10 mph becoming east in the afternoon.

    High: 74 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 68. South wind 7 to 9 mph.

    Low: 68 °F

    Partly Cloudy

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 71. Southwest wind around 8 mph.
Wednesday
Patchy fog between 4pm and 5pm. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 78. Southwest wind 7 to 10 mph.
Wednesday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 72. Southwest wind 9 to 11 mph.
Thursday
Showers and possibly a thunderstorm before 9am, then a slight chance of showers after 1pm. Patchy fog before 9am. High near 78. Southwest wind 14 to 17 mph. Chance of precipitation is 80%.
Thursday Night
A slight chance of showers before 2am. Partly cloudy, with a low around 72. Southwest wind around 16 mph. Chance of precipitation is 20%.
Friday
Sunny, with a high near 79. West wind around 14 mph becoming north in the afternoon.
Friday Night
Partly cloudy, with a low around 68. North wind around 9 mph.
Saturday
Sunny, with a high near 74. Northeast wind around 10 mph becoming east in the afternoon.
Saturday Night
Partly cloudy, with a low around 68. South wind 7 to 9 mph.
Sunday
A chance of showers after 9am. Partly sunny, with a high near 76. South wind 11 to 14 mph. Chance of precipitation is 40%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 67. South wind 9 to 11 mph becoming west after midnight. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 75. Northeast wind 11 to 13 mph.
Monday Night
Partly cloudy, with a low around 68. East wind around 9 mph.
Tuesday
Mostly sunny, with a high near 74. East wind around 11 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Siasconset MA
 41.33°N 69.98°W (Elev. 0 ft)
Last Update:
12:11 am EDT Jul 16, 2025
Forecast Valid:
1am EDT Jul 16, 2025-6pm EDT Jul 22, 2025
 
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