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

37°F

3°C

Humidity 79%
Wind Speed W 5 mph
Barometer 30.10 in (1019.2 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 13 May 3:51 am EDT
Extended Forecast for

Portland ME

Frost Advisory May 13, 04:00am until May 13, 09:00am
Click here for hazard details and duration
...
  •  
    Frost Advisory May 13, 04:00am until May 13, 09:00am

    NOW until 9:00am Wed

    Frost Advisory

  • Today

    High: 53 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers before midnight. Cloudy, with a low around 47. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 47 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: Rain likely, then rain and possibly a thunderstorm after 2pm. High near 54. Southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 54 °F

    Slight Chance
    Rain then
    Rain

  • Thursday Night

    Thursday Night: Rain. Low around 46. Northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.

    Low: 46 °F

    Rain

  • Friday

    Friday: Rain, mainly before 1pm. High near 53. Northeast wind 5 to 10 mph. Chance of precipitation is 80%.

    High: 53 °F

    Rain

  • Friday Night

    Friday Night: A 30 percent chance of rain before 7pm. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Chance Rain
    then Partly
    Cloudy

  • Saturday

    Saturday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

Detailed Forecast

Today
A 50 percent chance of showers, mainly after noon. Mostly cloudy, with a high near 53. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A 20 percent chance of showers before midnight. Cloudy, with a low around 47. South wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday
Rain likely, then rain and possibly a thunderstorm after 2pm. High near 54. Southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Rain. Low around 46. Northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
Friday
Rain, mainly before 1pm. High near 53. Northeast wind 5 to 10 mph. Chance of precipitation is 80%.
Friday Night
A 30 percent chance of rain before 7pm. Mostly cloudy, with a low around 46.
Saturday
Sunny, with a high near 66.
Saturday Night
Mostly clear, with a low around 54.
Sunday
Sunny, with a high near 73.
Sunday Night
Partly cloudy, with a low around 50.
Monday
Mostly sunny, with a high near 66.
Monday Night
Mostly cloudy, with a low around 50.
Tuesday
Mostly sunny, with a high near 73.
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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:
2:25 am EDT May 13, 2026
Forecast Valid:
4am EDT May 13, 2026-6pm EDT May 19, 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