San Francisco, California has a mild climate all-year round with temperatures rarely rising above 70°F and rarely dropping below 50°F. The city experiences near-constant fog from June to August which brings cooler temperatures and strong coastal breezes. San Francisco averages 22 inches of rain annually, most of it falling during the winter months. There are usually 300 sunny days a year although the presence of persistent fog can reduce the amount of sunshine experienced in some areas.
San Francisco, California gets 25 inches of rain, on average, per year. The US average is 38 inches of rain per year.
San Francisco averages 0 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 259 sunny days per year in San Francisco. The US average is 205 sunny days.
San Francisco gets some kind of precipitation, on average, 72 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Summer High: the July high is around 67 degrees
Winter Low: the January low is 46
Rain: averages 25 inches of rain a year
Snow: averages 0 inches of snow a year