Weather By Day

August Seattle Weather 
August Seattle Weather
Record High: 97°F
Normal High: 76°F
Normal Low: 56°F
Record Low: 48°F
Avg Monthly Rain: 1.02"
Rec 1 Day Rain: 1.24"

Seattle Weather In August

The hottest August day in Seattle for the past 66 years was 97 degrees Fahrenheit, most recently encountered on August 9, 1960, while the normal high temperature is 76. The lowest reported temperature in August for Seattle for the past 66 years was 48 on August 14, 1960, and the regular low is 56.

National Weather Service historical Seattle August Weather data indicates that on August 1, 1956, the recorded high did not exceed 58 degrees Fahrenheit, the lowest high measured in Seattle in the past 66 years. NWS data also shows that on August 8, 1960, the lowest measured temperature on that day did not drop below 66 degrees, the highest low temperature measured in Seattle in the last 66 years.

National Weather Service records indicate that the high temperature in Seattle on August First averages 75 degrees and the high on the last day of the month averages 72 degrees. The average daily low temperature in Seattle on August First is 57 degrees Fahrenheit and the average low on the last day of August is 56 degrees.

Seattle usually receives an average of 1.02 inches of precipitation during August. August Seattle Weather records indicated that on August 27, 1968 Seattle received 1.24 inches of precipitation, the most rain recorded in a single day in August.