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

55°F

13°C

Humidity NA
Wind Speed Calm
Barometer 30.16 in (1021.4 mb)
Dewpoint N/A
Visibility 10.00 mi
Last update 16 Aug 4:51 am EDT
Extended Forecast for

Cousins Island ME

  • Today

    Today: Mostly sunny, with a high near 72. Light and variable wind becoming southeast 5 to 10 mph in the afternoon.

    High: 72 °F

    Mostly Sunny

  • Tonight

    Tonight: A 20 percent chance of showers after 3am. Mostly cloudy, with a low around 63. South wind 10 to 15 mph.

    Low: 63 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Monday

    Monday: Showers likely before 11am, then showers likely and possibly a thunderstorm between 11am and 4pm, then a chance of showers and thunderstorms after 4pm. Cloudy, with a high near 69. South wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 69 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A 30 percent chance of showers between 9pm and 1am. Mostly cloudy, with a low around 62. Southeast wind around 5 mph becoming northeast after midnight.

    Low: 62 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 76. North wind around 5 mph becoming east in the afternoon.

    High: 76 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers. Partly sunny, with a high near 75.

    High: 75 °F

    Chance
    Showers

Detailed Forecast

Today
Mostly sunny, with a high near 72. Light and variable wind becoming southeast 5 to 10 mph in the afternoon.
Tonight
A 20 percent chance of showers after 3am. Mostly cloudy, with a low around 63. South wind 10 to 15 mph.
Monday
Showers likely before 11am, then showers likely and possibly a thunderstorm between 11am and 4pm, then a chance of showers and thunderstorms after 4pm. Cloudy, with a high near 69. South wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
A 30 percent chance of showers between 9pm and 1am. Mostly cloudy, with a low around 62. Southeast wind around 5 mph becoming northeast after midnight.
Tuesday
Partly sunny, with a high near 76. North wind around 5 mph becoming east in the afternoon.
Tuesday Night
Partly cloudy, with a low around 62.
Wednesday
Mostly sunny, with a high near 76.
Wednesday Night
Partly cloudy, with a low around 63.
Thursday
A 30 percent chance of showers. Partly sunny, with a high near 75.
Thursday Night
Partly cloudy, with a low around 59.
Friday
Sunny, with a high near 75.
Friday Night
Partly cloudy, with a low around 59.
Saturday
Mostly sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Cousins Island ME
 43.76°N 70.15°W (Elev. 3 ft)
Last Update:
2:19 am EDT Aug 16, 2026
Forecast Valid:
5am EDT Aug 16, 2026-6pm EDT Aug 22, 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