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

70°F

21°C

Humidity 53%
Wind Speed NW 13 mph
Barometer 29.66 in (1004.3 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 20 Jun 6:51 pm EDT
Extended Forecast for

Yarmouth ME

  • Tonight

    Tonight: Mostly cloudy, with a low around 57. Northwest wind around 5 mph becoming calm after midnight.

    Low: 57 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 74. West wind 5 to 10 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 56. Calm wind. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 56 °F

    Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers after 4pm. Mostly sunny through mid morning, then becoming cloudy, with a high near 76. Light and variable wind becoming south 5 to 10 mph in the afternoon.

    High: 76 °F

    Partly Sunny
    then Chance
    Showers

  • Monday Night

    Monday Night: Showers, mainly after 8pm. Low around 54. South wind around 5 mph. Chance of precipitation is 90%.

    Low: 54 °F

    Showers

  • Tuesday

    Tuesday: Showers likely, mainly before 9am. Mostly cloudy, with a high near 77. Chance of precipitation is 60%.

    High: 77 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 57. Northwest wind around 5 mph becoming calm after midnight.
Sunday
A slight chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 74. West wind 5 to 10 mph. Chance of precipitation is 40%. 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 and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 56. Calm wind. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
A 30 percent chance of showers after 4pm. Mostly sunny through mid morning, then becoming cloudy, with a high near 76. Light and variable wind becoming south 5 to 10 mph in the afternoon.
Monday Night
Showers, mainly after 8pm. Low around 54. South wind around 5 mph. Chance of precipitation is 90%.
Tuesday
Showers likely, mainly before 9am. Mostly cloudy, with a high near 77. Chance of precipitation is 60%.
Tuesday Night
Partly cloudy, with a low around 58.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Mostly clear, with a low around 57.
Thursday
Mostly sunny, with a high near 76.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 57.
Friday
A 50 percent chance of showers. Partly sunny, with a high near 75.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 57.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Yarmouth ME
 43.81°N 70.2°W (Elev. 52 ft)
Last Update:
6:15 pm EDT Jun 20, 2026
Forecast Valid:
7pm EDT Jun 20, 2026-6pm EDT Jun 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