Current conditions at

Portland, Portland International Jetport (KPWM)

Lat: 43.64°NLon: 70.3°WElev: 72ft.

A Few Clouds

90°F

32°C

Humidity 44%
Wind Speed S 10 mph
Barometer 29.99 in (1015.4 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 12 Aug 1:51 pm EDT
Extended Forecast for

Harmon Beach ME

Heat Advisory August 12, 02:45pm until August 13, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 12, 02:45pm until August 13, 08:00pm

    NOW until 8:00pm Wed

    Heat Advisory

  • This Afternoon

    High: 94 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 64. South wind around 5 mph becoming calm  in the evening.

    Low: 64 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 90. Light and variable wind becoming south 5 to 10 mph in the afternoon.

    High: 90 °F

    Hot

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers after 8pm.  Mostly cloudy, with a low around 68. Southwest wind around 5 mph.

    Low: 68 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 11am, then showers likely and possibly a thunderstorm after 11am.  Mostly cloudy, with a high near 85. Calm wind becoming northwest around 5 mph.  Chance of precipitation is 60%.

    High: 85 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A 40 percent chance of showers before 10pm.  Partly cloudy, with a low around 59.

    Low: 59 °F

    Chance
    Showers then
    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 94. Southeast wind around 5 mph.
Tonight
Mostly clear, with a low around 64. South wind around 5 mph becoming calm in the evening.
Wednesday
Sunny and hot, with a high near 90. Light and variable wind becoming south 5 to 10 mph in the afternoon.
Wednesday Night
A 30 percent chance of showers after 8pm. Mostly cloudy, with a low around 68. Southwest wind around 5 mph.
Thursday
A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 11am, then showers likely and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 85. Calm wind becoming northwest around 5 mph. Chance of precipitation is 60%.
Thursday Night
A 40 percent chance of showers before 10pm. Partly cloudy, with a low around 59.
Friday
Sunny, with a high near 83.
Friday Night
Mostly clear, with a low around 55.
Saturday
Sunny, with a high near 85.
Saturday Night
Mostly clear, with a low around 61.
Sunday
Mostly sunny, with a high near 89.
Sunday Night
Partly cloudy, with a low around 60.
Monday
Mostly sunny, with a high near 79.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Harmon Beach ME
 43.81°N 70.56°W (Elev. 361 ft)
2:14 pm EDT Aug 12, 2025
2pm EDT Aug 12, 2025-6pm EDT Aug 18, 2025
 
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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