National Weather Service Forecast for: Portland OR
Issued by: National Weather Service Portland, OR
Updated: 11:41 am PST Dec 19, 2025
 
This
Afternoon
This Afternoon: Showers likely before 1pm, then showers likely and possibly a thunderstorm between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 47. Southwest wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Showers
Likely
 Tonight

Tonight: Showers likely and possibly a thunderstorm, then showers after 7pm. Low around 41. South southwest wind around 10 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers
 Saturday

Saturday: Showers. High near 48. South wind around 11 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Showers
 Saturday
Night
Saturday Night: Showers likely. Mostly cloudy, with a low around 40. South southeast wind around 7 mph. Chance of precipitation is 70%.
Showers
Likely
 Sunday

Sunday: Showers. High near 48. South wind around 8 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Showers
 Sunday
Night
Sunday Night: Showers. Low around 41. Chance of precipitation is 100%.
Showers
 Monday

Monday: Showers before 4pm, then rain after 4pm. High near 49. Chance of precipitation is 80%.
Showers
 Monday
Night
Monday Night: Rain. Mostly cloudy, with a low around 42.
Rain
 Tuesday

Tuesday: A chance of rain. Mostly cloudy, with a high near 48.
Chance Rain
Hi 47 °F Lo 41 °F Hi 48 °F Lo 40 °F Hi 48 °F Lo 41 °F Hi 49 °F Lo 42 °F Hi 48 °F

Flood Watch
 

This Afternoon
 
 Showers likely before 1pm, then showers likely and possibly a thunderstorm between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 47. Southwest wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
 
 Showers likely and possibly a thunderstorm, then showers after 7pm. Low around 41. South southwest wind around 10 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
 
 Showers. High near 48. South wind around 11 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
 
 Showers likely. Mostly cloudy, with a low around 40. South southeast wind around 7 mph. Chance of precipitation is 70%.
Sunday
 
 Showers. High near 48. South wind around 8 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
 
 Showers. Low around 41. Chance of precipitation is 100%.
Monday
 
 Showers before 4pm, then rain after 4pm. High near 49. Chance of precipitation is 80%.
Monday Night
 
 Rain. Mostly cloudy, with a low around 42.
Tuesday
 
 A chance of rain. Mostly cloudy, with a high near 48.
Tuesday Night
 
 A chance of rain. Mostly cloudy, with a low around 39.
Wednesday
 
 A chance of rain. Mostly cloudy, with a high near 48.
Wednesday Night
 
 A chance of rain. Mostly cloudy, with a low around 37.
Christmas Day
 
 A chance of rain. Mostly cloudy, with a high near 46.

 

Forecast from NOAA-NWS for Portland OR.