Anderson Island, WA has a warm, temperate climate with mild winters and cool summers. The average annual temperature is around 52 °F (11 °C). During the summer months, temperatures can reach into the mid-80s (29 °C) and during the winter months, temperatures drop to the upper 30s (3-4 °C). Rainfall is consistent throughout the year, averaging around 35 inches (902 mm), with most occurring in autumn and winter. Snowfall is rare on Anderson Island and occurs only a few times a year when temperatures dip below freezing.
Anderson Island, Washington gets 48 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Anderson Island averages 5 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 139 sunny days per year in Anderson Island. The US average is 205 sunny days.
Anderson Island gets some kind of precipitation, on average, 154 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 76 degrees
Winter Low: the January low is 36
Rain: averages 48 inches of rain a year
Snow: averages 5 inches of snow a year