National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Portland, Portland International Jetport (KPWM)

Lat: 43.64°NLon: 70.3°WElev: 72ft.

Fair

66°F

19°C

Humidity 81%
Wind Speed SW 3 mph
Barometer 30.13 in (1020.1 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 29 Jun 10:51 pm EDT
Extended Forecast for

Portland ME

Extreme Heat Watch July 1, 12:00pm until July 3, 08:00pm
Click here for hazard details and duration
Extreme Heat Watch

  • Tonight

    Tonight: Partly cloudy, with a low around 60. Southwest wind around 5 mph.

    Low: 60 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 79. Light southwest wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 79 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Scattered showers and thunderstorms. Cloudy, then gradually becoming partly cloudy, with a low around 64. Southwest wind 5 to 10 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Scattered
    Showers

  • Wednesday

    Wednesday: Increasing clouds, with a high near 89. Heat index values as high as 97. Southwest wind 5 to 10 mph.

    High: 89 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 70. Southwest wind around 5 mph.

    Low: 70 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny and hot, with a high near 90.

    High: 90 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny and hot, with a high near 96.

    High: 96 °F

    Hot

  • Friday Night

    Friday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 60. Southwest wind around 5 mph.
Tuesday
Partly sunny, with a high near 79. Light southwest wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Tuesday Night
Scattered showers and thunderstorms. Cloudy, then gradually becoming partly cloudy, with a low around 64. Southwest wind 5 to 10 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
Increasing clouds, with a high near 89. Heat index values as high as 97. Southwest wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 70. Southwest wind around 5 mph.
Thursday
Sunny and hot, with a high near 90.
Thursday Night
Mostly clear, with a low around 73.
Friday
Mostly sunny and hot, with a high near 96.
Friday Night
Partly cloudy, with a low around 69.
Independence Day
A 40 percent chance of showers after 1pm. Partly sunny and hot, with a high near 90.
Saturday Night
Partly cloudy, with a low around 66.
Sunday
Mostly sunny, with a high near 85.
Sunday Night
Partly cloudy, with a low around 63.
Monday
Partly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portland ME
 43.66°N 70.27°W (Elev. 7 ft)
Last Update:
2:38 pm EDT Jun 29, 2026
Forecast Valid:
11pm EDT Jun 29, 2026-6pm EDT Jul 6, 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