Weather is probably a major factor when you plan your trip to Sutherlin, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually August and July, with an average temperature of 17°C, while the coldest months are December and February, with an average of 5°C. The rainiest months in Sutherlin are December, March, November and January, with each month seeing an average of 196 mm of rainfall.