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.

Partly Cloudy

89°F

32°C

Humidity 55%
Wind Speed W 10 mph
Barometer 29.85 in (1010.6 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 3 Jul 11:51 am EDT
Extended Forecast for

2 Miles ESE Union Falls ME

Extreme Heat Warning July 3, 12:51pm until July 3, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 3, 12:51pm until July 3, 08:00pm

    NOW until 8:00pm Fri

    Extreme Heat Warning

  • This Afternoon

    High: 98 °F

    Hot

  • Tonight

    Tonight: Scattered showers and thunderstorms between 11pm and 2am. Partly cloudy, with a low around 71. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 71 °F

    Scattered
    Showers

  • Independence Day

    Independence Day: Sunny and hot, with a high near 91. West wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 91 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 64. Northwest wind around 5 mph becoming calm.

    Low: 64 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 86. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 86 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 61.

    Low: 61 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 81.

    High: 81 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 30 percent chance of showers after 11pm. Mostly cloudy, with a low around 58.

    Low: 58 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 98. Heat index values as high as 103. West wind 10 to 15 mph.
Tonight
Scattered showers and thunderstorms between 11pm and 2am. Partly cloudy, with a low around 71. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Independence Day
Sunny and hot, with a high near 91. West wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 64. Northwest wind around 5 mph becoming calm.
Sunday
Mostly sunny, with a high near 86. Calm wind becoming northwest around 5 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 61.
Monday
Partly sunny, with a high near 81.
Monday Night
A 30 percent chance of showers after 11pm. Mostly cloudy, with a low around 58.
Tuesday
A 40 percent chance of showers before 4pm. Partly sunny, with a high near 77.
Tuesday Night
Mostly cloudy, with a low around 59.
Wednesday
Mostly sunny, with a high near 84.
Wednesday Night
Partly cloudy, with a low around 63.
Thursday
Mostly sunny and hot, with a high near 93.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Union Falls ME
 43.57°N 70.53°W (Elev. 118 ft)
Last Update:
6:14 am EDT Jul 3, 2026
Forecast Valid:
12pm EDT Jul 3, 2026-6pm EDT Jul 9, 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