San Diego Weather In September

The highest recorded temperature in September for San Diego for the past 65 years was 31 degrees Celsius, measured on September 29, 1963, and the typical high is 25. The lowest documented temperature for San Diego for the past 65 years in September was 1 most recently measured on September 15, 1987, while the typical low recorded temperature is 19.

According to National Weather Service historical San Diego September Weather data, on September 31, 1915, the high temperature did not exceed 9 degrees Celsius, the lowest high measured in San Diego in the past 65 years. NWS weather data additionally shows that on September 26, 1977, the lowest recorded temperature on that day did not drop below 18 degrees, the highest low measured in San Diego in the last 65 years.

Historical weather data accumulated by the National Weather Service shows that the average daily high temperature in San Diego on September First is 19 degrees Celsius and the average high on the last day of September is 18 degrees. The average daily low temperature in San Diego on September First is 10 degrees Celsius and the average low on the last day of September is 9 degrees.

San Diego usually receives an average of .53 centimeters of precipitation during the month. The most precipitation recorded on a single day in September, according to September San Diego Weather data, was 6.60 centimeters on September 22, 1945.