Weather By Day

August Portland Weather 
August Portland Weather
Record High: 107°F
Normal High: 80°F
Normal Low: 57°F
Record Low: 44°F
Avg Monthly Rain: 0.93"
Rec 1 Day Rain: 1.46"

Portland Weather In August

In the last 70 years the highest measured August temperature in Portland was 107 degrees Fahrenheit, measured on August 10, 1981, and the standard high is 80. The lowest documented temperature in August for Portland for the past 70 years was 44 most recently registered on August 31, 1951, while the typical low recorded temperature is 57.

According to National Weather Service historical Portland August Weather data, on August 2, 1956, the high temperature did not exceed 58 degrees Fahrenheit, the lowest high measured in Portland in the past 70 years. The Weather Service additionally shows that on August 25, 1996, the low for the day did not drop below 68 degrees, the highest low temperature in Portland in the last 70 years.

National Weather Service records indicate that the high temperature in Portland on August First averages 44 degrees and the high on the last day of the month averages 39 degrees. The average recorded low temperature in Portland on August First is 32 degrees Fahrenheit and the average low on the last day of August is 27 degrees.

Portland usually receives an average of 0.93 inches of rain during August. The most precipitation recorded on a single day in August, according to August Portland Weather data, was 1.46 inches on August 25, 1977.