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.

Mostly Cloudy

77°F

25°C

Humidity 43%
Wind Speed NW 14 G 21 mph
Barometer 29.98 in (1015.2 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 18 Sep 2:51 pm EDT
Extended Forecast for

Portland International Jetport ME

  • Tonight

    Tonight: Increasing clouds, with a low around 46. North wind 5 to 10 mph, with gusts as high as 25 mph.

    Low: 46 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 64. North wind 5 to 10 mph becoming southeast in the afternoon.

    High: 64 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 46. South wind around 5 mph becoming calm after midnight.

    Low: 46 °F

    Partly Cloudy

  • Sunday

    Sunday: A 40 percent chance of showers after noon. Mostly cloudy, with a high near 62. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 62 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Showers likely, mainly before midnight. Mostly cloudy, with a low around 46. South wind around 5 mph becoming north after midnight. Chance of precipitation is 60%.

    Low: 46 °F

    Showers
    Likely

  • Monday

    Monday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 65.

    High: 65 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 46. North wind 5 to 10 mph, with gusts as high as 25 mph.
Saturday
Sunny, with a high near 64. North wind 5 to 10 mph becoming southeast in the afternoon.
Saturday Night
Partly cloudy, with a low around 46. South wind around 5 mph becoming calm after midnight.
Sunday
A 40 percent chance of showers after noon. Mostly cloudy, with a high near 62. South wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Showers likely, mainly before midnight. Mostly cloudy, with a low around 46. South wind around 5 mph becoming north after midnight. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 65.
Monday Night
Partly cloudy, with a low around 46.
Tuesday
Partly sunny, with a high near 65.
Tuesday Night
Partly cloudy, with a low around 45.
Wednesday
Mostly sunny, with a high near 64.
Wednesday Night
Partly cloudy, with a low around 45.
Thursday
Partly sunny, with a high near 63.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 46.
Friday
A 30 percent chance of showers. Partly sunny, with a high near 66.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Portland International Jetport ME
 43.65°N 70.3°W (Elev. 52 ft)
Last Update:
2:20 pm EDT Sep 18, 2026
Forecast Valid:
3pm EDT Sep 18, 2026-6pm EDT Sep 25, 2026
 
Forecast Discussion
 
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Additional Resources

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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