Oso, WA has a moderate climate with cool summers and mild winters. Average temperatures in the summer range from the low 60s to the mid 70s, while winter temperatures typically range from the mid 30s to the lower 40s. Precipitation is abundant throughout the year, with an average of over 200 days of rain annually. Snowfall is rare but does occur occasionally in December and January. The area enjoys long sunny days during the summer and beautiful colors during fall foliage season.
Oso, Washington gets 42 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Oso averages 5 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 162 sunny days per year in Oso. The US average is 205 sunny days.
Oso gets some kind of precipitation, on average, 174 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 74 degrees
Winter Low: the January low is 35
Rain: averages 42 inches of rain a year
Snow: averages 5 inches of snow a year