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

74°F

23°C

Humidity 50%
Wind Speed W 13 G 23 mph
Barometer 29.50 in (998.9 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 19 Jun 6:51 pm EDT
Extended Forecast for

Trefethen ME

  • Tonight

    Tonight: Increasing clouds, with a low around 57. West wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 57 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 68. Northwest wind around 15 mph, with gusts as high as 25 mph.

    High: 68 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 57. West wind 5 to 10 mph.

    Low: 57 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 40 percent chance of showers after noon. Partly sunny, with a high near 68. Light and variable wind becoming south 5 to 10 mph in the afternoon.

    High: 68 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56. South wind around 5 mph becoming calm.

    Low: 56 °F

    Partly Cloudy

  • Monday

    Monday: Rain likely, mainly after 5pm. Partly sunny, with a high near 66. Chance of precipitation is 60%.

    High: 66 °F

    Mostly Sunny
    then Rain
    Likely

  • Monday Night

    Monday Night: Rain likely before 8pm, then showers, mainly after 8pm. 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 71. Chance of precipitation is 60%.

    High: 71 °F

    Showers
    Likely then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 57. West wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 68. Northwest wind around 15 mph, with gusts as high as 25 mph.
Saturday Night
Mostly cloudy, with a low around 57. West wind 5 to 10 mph.
Sunday
A 40 percent chance of showers after noon. Partly sunny, with a high near 68. Light and variable wind becoming south 5 to 10 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 56. South wind around 5 mph becoming calm.
Monday
Rain likely, mainly after 5pm. Partly sunny, with a high near 66. Chance of precipitation is 60%.
Monday Night
Rain likely before 8pm, then showers, mainly after 8pm. Low around 56. Chance of precipitation is 90%.
Tuesday
Showers likely, mainly before 8am. Partly sunny, with a high near 71. Chance of precipitation is 60%.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
Sunny, with a high near 73.
Wednesday Night
Partly cloudy, with a low around 58.
Thursday
Mostly sunny, with a high near 67.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 57.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 67.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Trefethen ME
 43.68°N 70.2°W (Elev. 16 ft)
Last Update:
7:03 pm EDT Jun 19, 2026
Forecast Valid:
7pm EDT Jun 19, 2026-6pm EDT Jun 26, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation