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.

Overcast

67°F

19°C

Humidity 97%
Wind Speed Calm
Barometer 29.87 in (1011.4 mb)
Dewpoint 66°F (19°C)
Visibility NA
Last update 18 Aug 12:51 am EDT
Extended Forecast for

Yarmouth Junction ME

  • Overnight

    Overnight: Areas of fog. Otherwise, mostly cloudy, with a low around 61. Calm wind.

    Low: 61 °F

    Areas Fog

  • Tuesday

    Tuesday: A 20 percent chance of showers between 1pm and 2pm. Areas of fog before 10am. Otherwise, mostly cloudy, with a high near 78. Northeast wind around 5 mph.

    High: 78 °F

    Areas Fog
    then Slight
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Areas of fog after 1am. Otherwise, increasing clouds, with a low around 60. Calm wind.

    Low: 60 °F

    Mostly Cloudy
    then Areas
    Fog

  • Wednesday

    Wednesday: Mostly sunny, with a high near 80. Light and variable wind becoming south 5 to 10 mph in the afternoon.

    High: 80 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 61. South wind around 5 mph becoming calm in the evening.

    Low: 61 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

Detailed Forecast

Overnight
Areas of fog. Otherwise, mostly cloudy, with a low around 61. Calm wind.
Tuesday
A 20 percent chance of showers between 1pm and 2pm. Areas of fog before 10am. Otherwise, mostly cloudy, with a high near 78. Northeast wind around 5 mph.
Tuesday Night
Areas of fog after 1am. Otherwise, increasing clouds, with a low around 60. Calm wind.
Wednesday
Mostly sunny, with a high near 80. Light and variable wind becoming south 5 to 10 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 61. South wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 81.
Thursday Night
Partly cloudy, with a low around 56.
Friday
Mostly sunny, with a high near 80.
Friday Night
Partly cloudy, with a low around 57.
Saturday
Partly sunny, with a high near 77.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 58.
Sunday
A 40 percent chance of showers. Mostly cloudy, with a high near 77.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 58.
Monday
A 30 percent chance of showers. Partly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Yarmouth Junction ME
 43.81°N 70.2°W (Elev. 52 ft)
Last Update:
10:30 pm EDT Aug 17, 2026
Forecast Valid:
1am EDT Aug 18, 2026-6pm EDT Aug 24, 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