National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Portland, Portland International Jetport (KPWM)

Lat: 43.64°NLon: 70.3°WElev: 72ft.

Mostly Cloudy

44°F

7°C

Humidity 79%
Wind Speed Calm
Barometer 29.87 in (1011.3 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 11 Nov 7:51 am EST
Extended Forecast for

Great Diamond Island Landing ME

  • Veterans Day

    Veterans Day: Mostly sunny, with a high near 50. Northwest wind 5 to 10 mph.

    High: 50 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 39. North wind around 5 mph becoming calm.

    Low: 39 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 30 percent chance of rain, mainly after 4pm. Mostly cloudy, with a high near 48. Northeast wind 5 to 15 mph, with gusts as high as 20 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 48 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday Night

    Thursday Night: Rain likely, mainly after 7pm. Cloudy, with a low around 37. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    Low: 37 °F

    Rain Likely
    and Breezy

  • Friday

    Friday: Rain likely. Cloudy, with a high near 42. Breezy, with a north wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.

    High: 42 °F

    Rain Likely
    and Breezy

  • Friday Night

    Friday Night: Rain likely, mainly before 9pm. Cloudy, with a low around 37. Chance of precipitation is 60%.

    Low: 37 °F

    Rain Likely

  • Saturday

    Saturday: A 50 percent chance of rain before 4pm. Mostly cloudy, with a high near 45.

    High: 45 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 48.

    High: 48 °F

    Partly Sunny

Detailed Forecast

Veterans Day
Mostly sunny, with a high near 50. Northwest wind 5 to 10 mph.
Tonight
Mostly cloudy, with a low around 39. North wind around 5 mph becoming calm.
Thursday
A 30 percent chance of rain, mainly after 4pm. Mostly cloudy, with a high near 48. Northeast wind 5 to 15 mph, with gusts as high as 20 mph. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Rain likely, mainly after 7pm. Cloudy, with a low around 37. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Friday
Rain likely. Cloudy, with a high near 42. Breezy, with a north wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Friday Night
Rain likely, mainly before 9pm. Cloudy, with a low around 37. Chance of precipitation is 60%.
Saturday
A 50 percent chance of rain before 4pm. Mostly cloudy, with a high near 45.
Saturday Night
Mostly cloudy, with a low around 38.
Sunday
Partly sunny, with a high near 48.
Sunday Night
Partly cloudy, with a low around 36.
Monday
Sunny, with a high near 49.
Monday Night
Mostly clear, with a low around 34.
Tuesday
Sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Great Diamond Island Landing ME
 43.68°N 70.2°W (Elev. 16 ft)
Last Update:
6:21 am EST Nov 11, 2026
Forecast Valid:
7am EST Nov 11, 2026-6pm EST Nov 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation