CLIMATE OF SAN FRANCISCO RAINFALL RETURN PERIODS

CLIMATE OF SAN FRANCISCO
Relative Humidity (%)

1871-1972

	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC	ANN
04 PST	81	83	81	82	89	89	92	93	87	81	82	80	85
10 PST	72	70	61	59	65	70	73	73	64	62	69	71	67
16 PST	63	63	61	61	68	72	74	73	66	60	63	63	66
22 PST	76	76	76	80	86	88	90	90	82	74	76	74	81

* Unfortunately, the above parameter is no longer measured in San Francisco. It is presented here as a matter of interest and because it is of considerable statistical use.