94121 San Francisco, CA has a mild climate year-round. The summers are warm and sunny, while the winters tend to be cool and damp. Rain is common throughout the year, but it is usually light and doesn't last too long. Temperatures rarely drop below freezing or rise above 85 degrees Fahrenheit. The area typically experiences temperatures ranging from 40-60 degrees Fahrenheit in the winter and 70-80 degrees Fahrenheit in the summer. Humidity levels tend to stay low throughout the year, with average humidity at 60%.
San Francisco (zip 94121), California gets 28 inches of rain, on average, per year. The US average is 38 inches of rain per year.
San Francisco (zip 94121) averages 0 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 260 sunny days per year in San Francisco (zip 94121). The US average is 205 sunny days.
San Francisco (zip 94121) gets some kind of precipitation, on average, 78 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.
Weather Highlights
Summer High: the July high is around 67 degrees
Winter Low: the January low is 44
Rain: averages 28 inches of rain a year
Snow: averages 0 inches of snow a year