Climate in San Francisco (zip 94131), California

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Climate	San Francisco, CA	United States
Rainfall (in.)	20.1	36.5
Snowfall (in.)	0	25
Precipitation Days	64	100
Sunny Days	260	205
Avg. July High	71	86.5
Avg. Jan. Low	42.4	20.5
Comfort Index (higher=better)	76	44
UV Index	5.4	4.3
Elevation ft.	489	1,443

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San Francisco (zip 94131), CA, gets 20 inches of rain per year. The US average is 37. Snowfall is 0 inches. The average US city gets 25 inches of snow per year. The number of days with any measurable precipitation is 64.

On average, there are 260 sunny days per year in San Francisco (zip 94131), CA. The July high is around 71 degrees. The January low is 42. Our comfort index, which is based on humidity during the hot months, is a 76 out of 100, where higher is more comfortable. The US average on the comfort index is 44.

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