National Weather Service Forecast for: Happy Valley OR
Issued by: National Weather Service Portland, OR
Updated: 12:41 pm PDT Mar 19, 2026
 
This
Afternoon
This Afternoon: A 30 percent chance of rain, mainly after 3pm. Mostly cloudy, with a high near 66. South southwest wind around 9 mph.
Chance Rain

 Tonight

Tonight: A 50 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 53. South wind 7 to 9 mph.
Chance Rain
then Slight
Chance Rain
 Friday

Friday: Rain likely, mainly after 4pm. Mostly cloudy, with a high near 62. South wind around 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Chance Rain
then Rain
Likely
 Friday
Night
Friday Night: Rain likely, mainly before 11pm. Mostly cloudy, with a low around 41. West wind 8 to 10 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Rain Likely

 Saturday

Saturday: A 30 percent chance of rain before 11am. Snow level 2700 feet lowering to 1900 feet. Mostly sunny, with a high near 51. Northwest wind 8 to 10 mph.
Chance Rain
then Mostly
Sunny
 Saturday
Night
Saturday Night: Mostly clear, with a low around 33.
Mostly Clear

 Sunday

Sunday: Mostly sunny, with a high near 55.
Mostly Sunny

 Sunday
Night
Sunday Night: Mostly cloudy, with a low around 39.
Mostly Cloudy

 Monday

Monday: Mostly cloudy, with a high near 56.
Mostly Cloudy
Hi 66 °F Lo 53 °F Hi 62 °F Lo 41 °F Hi 51 °F Lo 33 °F Hi 55 °F Lo 39 °F Hi 56 °F

 

This Afternoon
 
 A 30 percent chance of rain, mainly after 3pm. Mostly cloudy, with a high near 66. South southwest wind around 9 mph.
Tonight
 
 A 50 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 53. South wind 7 to 9 mph.
Friday
 
 Rain likely, mainly after 4pm. Mostly cloudy, with a high near 62. South wind around 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
 
 Rain likely, mainly before 11pm. Mostly cloudy, with a low around 41. West wind 8 to 10 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
 
 A 30 percent chance of rain before 11am. Snow level 2700 feet lowering to 1900 feet. Mostly sunny, with a high near 51. Northwest wind 8 to 10 mph.
Saturday Night
 
 Mostly clear, with a low around 33.
Sunday
 
 Mostly sunny, with a high near 55.
Sunday Night
 
 Mostly cloudy, with a low around 39.
Monday
 
 Mostly cloudy, with a high near 56.
Monday Night
 
 A chance of rain, mainly after 11pm. Mostly cloudy, with a low around 44.
Tuesday
 
 Rain likely. Mostly cloudy, with a high near 56.
Tuesday Night
 
 Rain. Mostly cloudy, with a low around 40.
Wednesday
 
 Rain likely. Mostly cloudy, with a high near 51.

 

Forecast from NOAA-NWS for Happy Valley OR.