Hazardous Weather Conditions
Current conditions at
Nantucket, Nantucket Memorial Airport (KACK)
Lat: 41.25°NLon: 70.06°WElev: 46ft.
A Few Clouds
66°F
19°C
| Humidity | 81% |
| Wind Speed | SE 13 mph |
| Barometer | 30.05 in (1017.7 mb) |
| Dewpoint | 60°F (16°C) |
| Visibility | 10.00 mi |
| Last update | 13 Sep 4:53 am EDT |
Extended Forecast for
Siasconset MA
Flood Watch until September 13, 06:00pm
NOW until 6:00pm Sun
Flood Watch
Overnight
Low: 61 °F
Mostly Cloudy
Sunday
High: 73 °F
Heavy Rain
and Patchy
FogSunday Night
Low: 65 °F
Chance
Showers and
Patchy FogMonday
High: 72 °F
Showers
Likely and
Patchy Fog
then Chance
ShowersMonday Night
Low: 56 °F
Mostly Clear
Tuesday
High: 66 °F
Sunny
Tuesday Night
Low: 51 °F
Mostly Clear
Wednesday
High: 70 °F
Sunny
Detailed Forecast
Overnight
Mostly cloudy, with a low around 61. Southeast wind around 7 mph.
Sunday
Showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Some of the storms could produce heavy rainfall. Patchy fog after 10am. High near 73. Southeast wind 10 to 13 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Sunday Night
A chance of showers before 8pm, then a chance of showers after 4am. Patchy fog. Otherwise, mostly cloudy, with a low around 65. West wind 6 to 9 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Showers likely, mainly before 9am. Patchy fog before 9am. Otherwise, mostly cloudy, then gradual clearing during the afternoon, with a high near 72. Northwest wind 9 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Mostly clear, with a low around 56. North wind 11 to 15 mph.
Tuesday
Sunny, with a high near 66. Northeast wind 10 to 16 mph.
Tuesday Night
Mostly clear, with a low around 51. Southeast wind around 6 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 70. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 58. Southwest wind 3 to 5 mph.
Thursday
Sunny, with a high near 70. South wind 3 to 8 mph.
Thursday Night
Partly cloudy, with a low around 60. South wind around 6 mph.
Friday
Partly sunny, with a high near 72. Southwest wind 7 to 11 mph.
Friday Night
A chance of showers. Mostly cloudy, with a low around 56. Northeast wind around 9 mph. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 68. East wind 10 to 13 mph.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Siasconset MA
41.28°N 70°W (Elev. 49 ft)
41.28°N 70°W (Elev. 49 ft)
3:47 am EDT Sep 13, 2026
5am EDT Sep 13, 2026-6pm EDT Sep 19, 2026
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