Portland Maine and Casco Bay Weather
Overnight
45°F
Mostly Clear
5 to 10 mph W
Monday
65°F
Mostly Sunny
10 mph SW
Monday Night
50°F
Mostly Cloudy
0 to 10 mph W
Tuesday
60°F
Mostly Cloudy
0 to 5 mph NE
Tuesday Night
50°F
Mostly Cloudy
0 to 5 mph SE
Wednesday
63°F
Mostly Sunny
5 to 10 mph SW
Wednesday Night
52°F
Partly Cloudy
5 mph SW
Thursday
63°F
Partly Sunny
5 to 15 mph S
Thursday Night
55°F
Chance Light Rain
10 mph S
Friday
63°F
Light Rain Likely
5 to 10 mph S
Friday Night
51°F
Light Rain Likely
5 to 10 mph SE
Saturday
58°F
Light Rain Likely
10 mph E
Saturday Night
47°F
Light Rain Likely
5 to 10 mph N
Sunday
57°F
Chance Light Rain
5 to 10 mph NW
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.