Nantucket Airport (ACK) Weather 09/20/2025
This Afternoon
75
Sunny
Tonight
55
Mostly Clear
Saturday
68
Sunny
Saturday Night
51
Mostly Clear
Sunday
67
Mostly Sunny
Sunday Night
54
Mostly Cloudy
Monday
70
Sunny
Monday Night
57
Partly Cloudy
Tuesday
72
Mostly Sunny
Tuesday Night
58
Chance Showers
Wednesday
71
Chance Showers
Wednesday Night
56
Mostly Cloudy
Thursday
69
Mostly Sunny
Weekly Forecast
This Afternoon
Sunny, with a high near 75. North wind 6 to 9 mph.
Tonight
Mostly clear, with a low around 55. Light east wind becoming north 6 to 11 mph in the evening.
Saturday
Sunny, with a high near 68. Northeast wind 11 to 14 mph.
Saturday Night
Mostly clear, with a low around 51. East wind around 8 mph.
Sunday
Mostly sunny, with a high near 67. East wind 10 to 14 mph.
Sunday Night
Mostly cloudy, with a low around 54. East wind 8 to 10 mph.
Monday
Sunny, with a high near 70. East wind around 10 mph.
Monday Night
Partly cloudy, with a low around 57. South wind around 7 mph becoming southwest after midnight.
Tuesday
Mostly sunny, with a high near 72. Southwest wind 10 to 14 mph.
Tuesday Night
A chance of showers after 9pm. Mostly cloudy, with a low around 58. Southwest wind around 10 mph. Chance of precipitation is 30%.
Wednesday
A chance of showers. Partly sunny, with a high near 71. North wind 10 to 14 mph. Chance of precipitation is 30%.
Wednesday Night
Mostly cloudy, with a low around 56. North wind around 9 mph.
Thursday
Mostly sunny, with a high near 69. North wind 11 to 14 mph.