A series of storms this week in the Bay Area, including a weak ‘atmospheric river’ system Friday expected to bring widespread rain to the region, should allow San Francisco and San Jose to reach their annual rainfall totals. Since the start of the water year Oct. 1, San Francisco has received 23.27 inches of rain, just shy of its annual average of 23.65 inches. San Jose has received 14.82 inches (annual average is 14.90) and Oakland 18.57 inches (20.81 average).