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.

Light Rain

56°F

13°C

Humidity 84%
Wind Speed SE 3 mph
Barometer 30.06 in (1017.7 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 20 Sep 6:51 pm EDT
Extended Forecast for

Long Island ME

  • Tonight

    Tonight: Showers, mainly before midnight. Areas of fog between 9pm and 2am. Low around 54. Southeast wind 5 to 10 mph becoming north after midnight. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 54 °F

    Rain and
    Areas Fog
    then Chance
    Showers and
    Areas Fog

  • Monday

    Monday: Mostly sunny, with a high near 62. North wind 10 to 15 mph.

    High: 62 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 51. North wind around 10 mph.

    Low: 51 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 58. Northeast wind around 10 mph.

    High: 58 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 50. Northeast wind 5 to 10 mph.

    Low: 50 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Showers, mainly before midnight. Areas of fog between 9pm and 2am. Low around 54. Southeast wind 5 to 10 mph becoming north after midnight. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Mostly sunny, with a high near 62. North wind 10 to 15 mph.
Monday Night
Mostly cloudy, with a low around 51. North wind around 10 mph.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 58. Northeast wind around 10 mph.
Tuesday Night
Partly cloudy, with a low around 50. Northeast wind 5 to 10 mph.
Wednesday
Mostly sunny, with a high near 58.
Wednesday Night
Partly cloudy, with a low around 49.
Thursday
Mostly sunny, with a high near 59.
Thursday Night
Mostly cloudy, with a low around 52.
Friday
Mostly cloudy, with a high near 60.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 54.
Saturday
A 40 percent chance of showers. Partly sunny, with a high near 61. Breezy.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 55.
Sunday
A 30 percent chance of showers. Partly sunny, with a high near 62. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Long Island ME
 43.69°N 70.17°W (Elev. 0 ft)
Last Update:
6:45 pm EDT Sep 20, 2026
Forecast Valid:
7pm EDT Sep 20, 2026-6pm EDT Sep 27, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation