average annual temperature oak island
CLIMATE OVERVIEW. Oak Harbor, Washington, gets 21 inches of rain per year. The US average is 39. Snowfall is 4 inches. The average US city gets 26 inches of snow per year. The number of days with any measurable precipitation is 64. On average, there are 159 sunny days per year in Oak Harbor, Washington. The July high is around 70 degrees. The January low is 36. Sperling's comfort index for Oak Harbor is a 74 out of 100, where a higher score indicates a more comfortable year-around climate. The US average for the comfort index is 54.