Marietta-Alderwood, WA Weather
Marietta-Alderwood, WA climate is mild during summer when temperatures tend to be in the 60's and cold during winter when temperatures tend to be in the 40's.
The warmest month of the year is August with an average maximum temperature of 71.70 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 32.40 degrees Fahrenheit.
Temperature variations between night and day tend to be fairly limited during summer with a difference that can reach 17 degrees Fahrenheit, and fairly limited during winter with an average difference of 13 degrees Fahrenheit.
The annual average precipitation at Marietta-Alderwood is 36.25 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is November with an average rainfall of 5.44 Inches.