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.

A Few Clouds

64°F

18°C

Humidity 70%
Wind Speed NW 10 mph
Barometer 30.15 in (1020.8 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 15 Aug 7:51 am EDT
Extended Forecast for

Thornton Heights ME

  • Today

    Today: Sunny, with a high near 82. West wind around 5 mph.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 56. Southwest wind around 5 mph becoming calm.

    Low: 56 °F

    Mostly Clear

  • Sunday

    Sunday: 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

  • Sunday Night

    Sunday Night: Showers likely, mainly after 3am. Mostly cloudy, with a low around 61. South wind 5 to 10 mph. Chance of precipitation is 60%.

    Low: 61 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday

    Monday: Showers, mainly before 2pm. High near 77. Southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    High: 77 °F

    Showers

  • Monday Night

    Monday Night: A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 59.

    Low: 59 °F

    Chance
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 82. West wind around 5 mph.
Tonight
Mostly clear, with a low around 56. Southwest wind around 5 mph becoming calm.
Sunday
Mostly sunny, with a high near 80. Light and variable wind becoming south 5 to 10 mph in the afternoon.
Sunday Night
Showers likely, mainly after 3am. Mostly cloudy, with a low around 61. South wind 5 to 10 mph. Chance of precipitation is 60%.
Monday
Showers, mainly before 2pm. High near 77. Southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Monday Night
A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 59.
Tuesday
Sunny, with a high near 83.
Tuesday Night
Mostly clear, with a low around 59.
Wednesday
Sunny, with a high near 85.
Wednesday Night
A 30 percent chance of showers after 3am. Partly cloudy, with a low around 62.
Thursday
A 30 percent chance of showers. Partly sunny, with a high near 84.
Thursday Night
Partly cloudy, with a low around 57.
Friday
Mostly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Thornton Heights ME
 43.63°N 70.31°W (Elev. 59 ft)
Last Update:
6:24 am EDT Aug 15, 2026
Forecast Valid:
8am EDT Aug 15, 2026-6pm EDT Aug 21, 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