Portland Maine and Casco Bay Weather
Overnight
45°F
Mostly Clear
15 mph NE
Wednesday
54°F
Sunny
10 to 15 mph NE
Wednesday Night
45°F
Mostly Cloudy
5 to 10 mph NE
Thursday
59°F
Partly Sunny
10 to 15 mph N
Thursday Night
39°F
Mostly Clear
15 mph N
Friday
51°F
Sunny
10 to 15 mph N
Friday Night
36°F
Mostly Clear
5 to 10 mph N
Saturday
55°F
Sunny
5 mph W
Saturday Night
39°F
Clear
0 to 5 mph W
Sunday
58°F
Sunny
0 to 10 mph SW
Sunday Night
43°F
Mostly Clear
5 to 10 mph SW
Monday
60°F
Sunny
0 to 5 mph W
Monday Night
44°F
Partly Cloudy
0 to 5 mph NW
Tuesday
53°F
Mostly Sunny
5 to 10 mph N
Marine weather for Portland, Casco Bay, Portland Harbor, South Portland, Cape Elizabeth, Portland Head Light, Falmouth, Falmouth Foreside, Cousins Island, Yarmouth, the Royal River, Freeport, South Freeport, the Harraseeket River, the New Meadows River, Harpswell, Orr's Island, Bailey Island, Peaks Island, Long Island, Great Diamond Island, Chebeague Island, Cliff Island, the Calendar Islands, Hussey Sound, Broad Sound, and the Fore River, Maine. Wind, tides, and conditions for sailing, boating, fishing, sea kayaking, paddleboarding, and windsurfing.