Mason, WA County has a temperate climate with mild temperatures throughout the year. Average highs range from the mid 50s in January to 85 degrees Fahrenheit in July and August, while average lows range from around 40 degrees in winter to around 60 degrees during the summer months. Rainfall is spread out throughout the year with a total of about 38 inches per year. Most of the precipitation comes between November and April when storms bring more frequent rain and snow showers. The area gets an average of 128 sunny days per year, making it one of the sunniest parts of Washington state.
Mason County, Washington gets 70 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Mason County averages 4 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 136 sunny days per year in Mason County. The US average is 205 sunny days.
Mason County gets some kind of precipitation, on average, 164 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 35
Rain: averages 70 inches of rain a year
Snow: averages 4 inches of snow a year