Portland Maine and Casco Bay Weather
Overnight
44°F
Mostly Clear
5 mph SW
Thursday
62°F
Sunny
5 to 15 mph SW
Thursday Night
54°F
Partly Cloudy then Slight Chance Rain Showers
10 to 15 mph SW
Friday
62°F
Sunny
10 to 15 mph W
Friday Night
42°F
Mostly Clear
10 to 15 mph NW
Saturday
50°F
Sunny
5 to 10 mph NW
Saturday Night
35°F
Mostly Clear
0 to 5 mph NW
Sunday
55°F
Sunny
5 mph SW
Sunday Night
42°F
Mostly Clear
5 mph SW
Monday
61°F
Mostly Sunny
5 mph SW
Monday Night
44°F
Partly Cloudy
5 mph NW
Tuesday
55°F
Partly Sunny
5 to 10 mph E
Tuesday Night
44°F
Mostly Cloudy then Slight Chance Rain Showers
5 mph S
Wednesday
57°F
Chance Rain Showers
10 mph S
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.