Portland Maine and Casco Bay Weather
Overnight
36°F
Clear
0 mph
Sunday
56°F
Sunny
0 to 5 mph SW
Sunday Night
41°F
Mostly Clear
5 mph SW
Monday
60°F
Sunny
0 to 5 mph W
Monday Night
41°F
Mostly Clear
5 to 10 mph NW
Tuesday
50°F
Sunny
5 to 10 mph N
Tuesday Night
34°F
Mostly Clear
5 to 10 mph N
Wednesday
49°F
Sunny
0 to 10 mph NE
Wednesday Night
41°F
Mostly Clear
5 to 10 mph SW
Thursday
61°F
Sunny
10 to 15 mph SW
Thursday Night
50°F
Mostly Clear
5 to 15 mph SW
Friday
62°F
Sunny
5 mph W
Friday Night
45°F
Mostly Clear
0 to 5 mph NW
Saturday
58°F
Mostly Sunny
0 to 10 mph NE
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.