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.

A Few Clouds

71°F

22°C

Humidity 59%
Wind Speed Calm
Barometer 30.11 in (1019.5 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 19 Jul 8:51 am EDT
Extended Forecast for

Portland ME

  • Today

    Today: Mostly sunny, with a high near 74. Light south wind increasing to 5 to 10 mph in the afternoon.

    High: 74 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 65. Southwest wind around 10 mph.

    Low: 65 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Rain and possibly a thunderstorm before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then scattered showers and thunderstorms after 4pm. Some of the storms could be severe. High near 75. South wind around 10 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 75 °F

    Showers
    Likely then
    Severe
    Thunderstorms

  • Sunday Night

    Sunday Night: Scattered showers and thunderstorms before 7pm. Some of the storms could be severe. Mostly clear, with a low around 60. Northwest wind around 5 mph. Chance of precipitation is 30%.

    Low: 60 °F

    Severe
    Thunderstorms
    then Mostly
    Clear

  • Monday

    Monday: Sunny, with a high near 72. Northwest wind around 10 mph, with gusts as high as 20 mph.

    High: 72 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 74. Light south wind increasing to 5 to 10 mph in the afternoon.
Tonight
Increasing clouds, with a low around 65. Southwest wind around 10 mph.
Sunday
Rain and possibly a thunderstorm before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then scattered showers and thunderstorms after 4pm. Some of the storms could be severe. High near 75. South wind around 10 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday Night
Scattered showers and thunderstorms before 7pm. Some of the storms could be severe. Mostly clear, with a low around 60. Northwest wind around 5 mph. Chance of precipitation is 30%.
Monday
Sunny, with a high near 72. Northwest wind around 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 55.
Tuesday
Sunny, with a high near 71.
Tuesday Night
Partly cloudy, with a low around 57.
Wednesday
Sunny, with a high near 73.
Wednesday Night
Partly cloudy, with a low around 63.
Thursday
Partly sunny, with a high near 76.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 66.
Friday
Partly sunny, with a high near 79.
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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:
6:22 am EDT Jul 19, 2025
Forecast Valid:
9am EDT Jul 19, 2025-6pm EDT Jul 25, 2025
 
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