Heppner, OR Weather
Heppner, OR 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 86.20 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 24.80 degrees Fahrenheit.
Temperature variations between night and day tend to be relatively big during summer with a difference that can reach 33 degrees Fahrenheit, and fairly limited during winter with an average difference of 18 degrees Fahrenheit.
The annual average precipitation at Heppner is 14.20 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is November with an average rainfall of 1.77 Inches.