Custer, WA Weather
Custer, WA climate is mild during summer when temperatures tend to be in the 60's and very cold during winter when temperatures tend to be in the 30's.
The warmest month of the year is July with an average maximum temperature of 72.40 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 30.20 degrees Fahrenheit.
Temperature variations between night and day tend to be moderate during summer with a difference that can reach 21 degrees Fahrenheit, and fairly limited during winter with an average difference of 14 degrees Fahrenheit.
The annual average precipitation at Custer is 41.44 Inches. Winter months tend to be wetter than summer months. The wettest month of the year is November with an average rainfall of 6.29 Inches.