National Weather Service Forecast for: Portland OR
Issued by: National Weather Service Portland, OR
Updated: 3:41 pm PDT Sep 12, 2026
 
This
Afternoon
This Afternoon: A 30 percent chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 69. Light south southwest wind.
Chance
Showers
 Tonight

Tonight: Rain and thunderstorms before 2am, then rain likely. Low around 55. Calm wind becoming south around 6 mph after midnight. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Rain
 Sunday

Sunday: Rain likely before 11am, then showers likely, mainly between 11am and 2pm. Cloudy, with a high near 66. South southwest wind 5 to 7 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Rain Likely
 Sunday
Night
Sunday Night: Increasing clouds, with a low around 54. Light south wind.
Increasing
Clouds
 Monday

Monday: Mostly cloudy, then gradually becoming sunny, with a high near 70. Calm wind.
Decreasing
Clouds
 Monday
Night
Monday Night: Partly cloudy, with a low around 54.
Partly Cloudy
 Tuesday

Tuesday: Mostly sunny, with a high near 73.
Mostly Sunny
 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 55.
Mostly Clear
 Wednesday

Wednesday: Sunny, with a high near 83.
Sunny
Hi 69 °F Lo 55 °F Hi 66 °F Lo 54 °F Hi 70 °F Lo 54 °F Hi 73 °F Lo 55 °F Hi 83 °F

 

This Afternoon
 
 A 30 percent chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 69. Light south southwest wind.
Tonight
 
 Rain and thunderstorms before 2am, then rain likely. Low around 55. Calm wind becoming south around 6 mph after midnight. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
 
 Rain likely before 11am, then showers likely, mainly between 11am and 2pm. Cloudy, with a high near 66. South southwest wind 5 to 7 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
 
 Increasing clouds, with a low around 54. Light south wind.
Monday
 
 Mostly cloudy, then gradually becoming sunny, with a high near 70. Calm wind.
Monday Night
 
 Partly cloudy, with a low around 54.
Tuesday
 
 Mostly sunny, with a high near 73.
Tuesday Night
 
 Mostly clear, with a low around 55.
Wednesday
 
 Sunny, with a high near 83.
Wednesday Night
 
 Mostly clear, with a low around 58.
Thursday
 
 Sunny, with a high near 87.
Thursday Night
 
 Mostly clear, with a low around 59.
Friday
 
 Sunny, with a high near 85.
Friday Night
 
 Mostly clear, with a low around 58.
Saturday
 
 Mostly sunny, with a high near 78.

 

Forecast from NOAA-NWS for Portland OR.