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.

Fog/Mist

42°F

6°C

Humidity 100%
Wind Speed SE 5 mph
Barometer 29.88 in (1011.9 mb)
Dewpoint 42°F (6°C)
Visibility 2.50 mi
Wind Chill39°F (4°C)
Last update 19 Apr 3:51 am EDT
Extended Forecast for

Portland ME

  • Overnight

    Overnight: A 20 percent chance of rain after 5am. Areas of fog. Otherwise, cloudy, with a low around 42. Calm wind.

    Low: 42 °F

    Slight Chance
    Rain and
    Areas Fog

  • Sunday

    Sunday: Rain, mainly after 10am. Areas of fog before noon. High near 46. South wind around 5 mph becoming north in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 46 °F

    Rain and
    Areas Fog

  • Sunday Night

    Sunday Night: Rain likely, mainly before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 34. West wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 34 °F

    Rain Likely
    then Mostly
    Clear

  • Monday

    Monday: A 40 percent chance of showers after 1pm. Mostly sunny, with a high near 46. West wind 5 to 10 mph.

    High: 46 °F

    Mostly Sunny
    then Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 31. North wind around 5 mph.

    Low: 31 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 43.

    High: 43 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 47.

    High: 47 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of rain after 5am. Areas of fog. Otherwise, cloudy, with a low around 42. Calm wind.
Sunday
Rain, mainly after 10am. Areas of fog before noon. High near 46. South wind around 5 mph becoming north in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday Night
Rain likely, mainly before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 34. West wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday
A 40 percent chance of showers after 1pm. Mostly sunny, with a high near 46. West wind 5 to 10 mph.
Monday Night
Partly cloudy, with a low around 31. North wind around 5 mph.
Tuesday
Sunny, with a high near 43.
Tuesday Night
Partly cloudy, with a low around 35.
Wednesday
Mostly cloudy, with a high near 47.
Wednesday Night
Mostly cloudy, with a low around 38.
Thursday
Partly sunny, with a high near 52.
Thursday Night
Mostly cloudy, with a low around 38.
Friday
Mostly sunny, with a high near 51.
Friday Night
Mostly cloudy, with a low around 39.
Saturday
Partly sunny, with a high near 50.
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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:
2:31 am EDT Apr 19, 2026
Forecast Valid:
4am EDT Apr 19, 2026-6pm EDT Apr 25, 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