Willamina, OR Weather
Willamina, OR climate is cool during summer when temperatures tend to be in the 50's and very cold during winter when temperatures tend to be in the 30's.
The warmest month of the year is August with an average maximum temperature of 9.99 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 9.99 degrees Fahrenheit.
Temperature variations between night and day tend to be fairly limited during summer with a difference that can reach 16 degrees Fahrenheit, and fairly limited during winter with an average difference of 10 degrees Fahrenheit.
The annual average precipitation at Willamina is 9.99 Inches. Winter months tend to be wetter than summer months. The wettest month of the year is December with an average rainfall of 9.11 Inches.