Happy Valley, OR has a moderate climate, with warm summers and cool winters. The average temperature in the summer months is around 75 degrees Fahrenheit, with occasional days reaching up to 90 degrees. In the winter, the average temperature is usually between 35-45 degrees Fahrenheit, although it can dip below freezing at night. It experiences moderate rainfall throughout the year, with snow in the higher elevations.
Happy Valley, Oregon gets 48 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Happy Valley averages 2 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 142 sunny days per year in Happy Valley. The US average is 205 sunny days.
Happy Valley gets some kind of precipitation, on average, 156 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 81 degrees
Winter Low: the January low is 37
Rain: averages 48 inches of rain a year
Snow: averages 2 inches of snow a year