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.

Fair

63°F

17°C

Humidity 70%
Wind Speed W 13 mph
Barometer 29.47 in (998.0 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 20 Jun 3:51 am EDT
Extended Forecast for

Little Diamond Island Landing ME

  • Today

    Today: Mostly sunny, with a high near 69. Northwest wind around 15 mph, with gusts as high as 20 mph.

    High: 69 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 58. West wind around 5 mph.

    Low: 58 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 68. Light and variable wind becoming south 5 to 10 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 68 °F

    Mostly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of showers before 7pm. Partly cloudy, with a low around 57. Southwest wind around 5 mph becoming calm.

    Low: 57 °F

    Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: A 40 percent chance of showers after 2pm. Partly sunny, with a high near 67. Light and variable wind becoming south 5 to 10 mph in the afternoon.

    High: 67 °F

    Partly Sunny
    then Chance
    Showers

  • Monday Night

    Monday Night: Showers. Low around 56. Chance of precipitation is 90%.

    Low: 56 °F

    Showers

  • Tuesday

    Tuesday: Showers likely, mainly before 8am. Partly sunny, with a high near 73. Chance of precipitation is 60%.

    High: 73 °F

    Showers
    Likely then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 69. Northwest wind around 15 mph, with gusts as high as 20 mph.
Tonight
Partly cloudy, with a low around 58. West wind around 5 mph.
Sunday
A chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 68. Light and variable wind becoming south 5 to 10 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A 30 percent chance of showers before 7pm. Partly cloudy, with a low around 57. Southwest wind around 5 mph becoming calm.
Monday
A 40 percent chance of showers after 2pm. Partly sunny, with a high near 67. Light and variable wind becoming south 5 to 10 mph in the afternoon.
Monday Night
Showers. Low around 56. Chance of precipitation is 90%.
Tuesday
Showers likely, mainly before 8am. Partly sunny, with a high near 73. Chance of precipitation is 60%.
Tuesday Night
Mostly clear, with a low around 59.
Wednesday
Sunny, with a high near 74.
Wednesday Night
Partly cloudy, with a low around 59.
Thursday
Mostly sunny, with a high near 69.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 58.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 68.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Little Diamond Island Landing ME
 43.66°N 70.21°W (Elev. 0 ft)
Last Update:
2:47 am EDT Jun 20, 2026
Forecast Valid:
4am EDT Jun 20, 2026-6pm EDT Jun 26, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation