Portland Maine and Casco Bay Weather
Overnight
39°F
Mostly Clear
5 mph W
Monday
62°F
Sunny
0 to 5 mph SW
Monday Night
41°F
Mostly Clear
5 to 10 mph N
Tuesday
51°F
Sunny
5 to 10 mph NW
Tuesday Night
39°F
Clear
5 mph N
Wednesday
52°F
Sunny
0 to 10 mph W
Wednesday Night
43°F
Mostly Clear
5 to 10 mph SW
Thursday
61°F
Mostly Sunny
5 to 10 mph SW
Thursday Night
51°F
Mostly Clear
10 mph SW
Friday
66°F
Mostly Sunny
5 to 10 mph W
Friday Night
47°F
Mostly Clear
5 mph NW
Saturday
58°F
Sunny
5 mph W
Saturday Night
44°F
Partly Cloudy
0 to 5 mph SW
Sunday
57°F
Mostly Sunny
5 to 10 mph SW
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.