The average high temperature in San Francisco in October is 70 degrees Fahrenheit. October is typically the second-warmest month of the year, following September.
The average low temperature in San Francisco in October is 55 degrees. Because of the mild temperatures, the fall months are considered the best time to visit the Golden Gate City.
Rain and snow are rare in San Francisco, and October is one of the driest months of the year. Average rainfall in October in San Francisco is slightly more than 1 inch.
