Portland Maine and Casco Bay Weather
Overnight
41°F
Mostly Clear
10 mph N
Tuesday
50°F
Sunny
5 to 10 mph NW
Tuesday Night
36°F
Mostly Clear
5 mph N
Wednesday
51°F
Mostly Sunny
0 to 10 mph S
Wednesday Night
44°F
Partly Cloudy
5 to 10 mph SW
Thursday
63°F
Sunny
5 to 10 mph SW
Thursday Night
53°F
Partly Cloudy
10 mph SW
Friday
65°F
Sunny
10 mph W
Friday Night
42°F
Mostly Clear
5 to 10 mph NW
Saturday
56°F
Sunny
5 mph NW
Saturday Night
41°F
Partly Cloudy
0 to 5 mph NW
Sunday
57°F
Mostly Sunny
5 to 10 mph SW
Sunday Night
48°F
Mostly Cloudy then Slight Chance Rain Showers
5 to 10 mph SW
Monday
59°F
Chance Rain Showers
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.