Weather By Day

August San Francisco Weather 
August San Francisco Weather
Record High: 100°F
Normal High: 72°F
Normal Low: 56°F
Record Low: 45°F
Avg Monthly Rain: 0.07"
Rec 1 Day Rain: 0.56"

San Francisco Weather In August

The highest recorded temperature in August for San Francisco California for the past 83 years was 100 degrees Fahrenheit, on August 1, 1993, and the mean high is 72. In the last 83 years the highest reported temperature in San Francisco for August was 45 most recently encountered on August 30, 1955, while the regular low temperature for a given day during the month is 56.

According to National Weather Service historical San Francisco August Weather data, on August 11, 1954, the high temperature did not exceed 59 degrees Fahrenheit, the lowest high measured in San Francisco in the past 83 years. NWS weather data additionally shows that on August 4, 2003, the lowest recorded temperature on that day did not drop below 65 degrees, the highest low measured in San Francisco in the last 83 years.

According to the National Weather Service, the high temperature in San Francisco in August on the first day of the month averages 67 degrees and the high on the last day of the month averages 64 degrees. The low measured temperature in San Francisco on August First averages 50 degrees and the low on the last day of the month averages 48 degrees.

San Francisco receives an average of 0.07 inches of precipitation during August. The most precipitation measured in a single day, as indicated by August San Francisco Weather data, was 0.56 inches on August 19, 1997.