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

72°F

22°C

Humidity 73%
Wind Speed NW 3 mph
Barometer 29.99 in (1015.6 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 10 Aug 8:51 am EDT
Extended Forecast for

Yarmouth ME

  • Today

    Today: Mostly sunny, with a high near 84. Light and variable wind becoming south 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 84 °F

    Mostly Sunny

  • Tonight

    Tonight: A 40 percent chance of showers, mainly between 9pm and 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 65. South wind around 5 mph becoming calm in the evening.

    Low: 65 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Sunny, with a high near 86. West wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 86 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 61. West wind around 5 mph.

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 83. West wind 5 to 10 mph becoming south in the afternoon.

    High: 83 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers before 2pm, then a chance of showers and thunderstorms between 2pm and 3pm, then showers likely and possibly a thunderstorm after 3pm. Partly sunny, with a high near 81. Chance of precipitation is 60%.

    High: 81 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 11pm. Mostly cloudy, with a low around 58. Chance of precipitation is 40%.

    Low: 58 °F

    Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 84. Light and variable wind becoming south 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tonight
A 40 percent chance of showers, mainly between 9pm and 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 65. South wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 86. West wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 61. West wind around 5 mph.
Wednesday
Sunny, with a high near 83. West wind 5 to 10 mph becoming south in the afternoon.
Wednesday Night
Partly cloudy, with a low around 60.
Thursday
A chance of showers before 2pm, then a chance of showers and thunderstorms between 2pm and 3pm, then showers likely and possibly a thunderstorm after 3pm. Partly sunny, with a high near 81. Chance of precipitation is 60%.
Thursday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 11pm. Mostly cloudy, with a low around 58. Chance of precipitation is 40%.
Friday
Sunny, with a high near 80.
Friday Night
Mostly clear, with a low around 55.
Saturday
Sunny, with a high near 81.
Saturday Night
Mostly clear, with a low around 55.
Sunday
Mostly sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Yarmouth ME
 43.79°N 70.2°W (Elev. 161 ft)
Last Update:
6:35 am EDT Aug 10, 2026
Forecast Valid:
9am EDT Aug 10, 2026-6pm EDT Aug 16, 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