Stacker compiled a ranking of the hottest Augusts in Oregon since 1895 using data from the National Centers for Environmental Information. August 2001 (tie)– Average temperature: 67.6°F– Monthly high temperature: 83.8°F– Monthly low temperature: 51.3°F– Total precipitation: 0.39″#10. August 1971– Average temperature: 68°F– Monthly high temperature: 83.9°F– Monthly low temperature: 52°F– Total precipitation: 0.54″#5. August 1986– Average temperature: 68.3°F– Monthly high temperature: 84.5°F– Monthly low temperature: 52.1°F– Total precipitation: 0.16″#3. August 1967– Average temperature: 69°F– Monthly high temperature: 86.7°F– Monthly low temperature: 51.3°F– Total precipitation: 0.08″#2.