Portland Maine and Casco Bay Weather
Overnight
40°F
Clear
15 mph NW
Saturday
50°F
Sunny
5 to 15 mph NW
Saturday Night
35°F
Mostly Clear
5 mph NW
Sunday
57°F
Sunny
5 mph SW
Sunday Night
46°F
Mostly Clear
5 to 10 mph SW
Monday
64°F
Sunny
5 to 10 mph SW
Monday Night
49°F
Partly Cloudy
0 to 5 mph W
Tuesday
59°F
Partly Sunny
0 to 5 mph NE
Tuesday Night
50°F
Mostly Cloudy then Slight Chance Rain Showers
5 mph SE
Wednesday
60°F
Slight Chance Rain Showers then Partly Sunny
5 to 10 mph S
Wednesday Night
51°F
Mostly Cloudy then Slight Chance Rain Showers
5 to 10 mph S
Thursday
62°F
Chance Rain Showers
5 to 10 mph S
Thursday Night
52°F
Chance Rain Showers
5 to 10 mph SW
Friday
60°F
Rain Showers Likely
5 to 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.