By Rich McKay and Julia Harte (Reuters) – San Diego, renowned for its mild, sunny weather, was mopping up on Tuesday after the heaviest rainfall ever recorded in the city in the month of January, a deluge that washed away parked cars, flooded homes and closed a stretch of highway. Rain pounded San Diego at half an inch (1.3 cm) per hour on Monday as firefighters and lifeguards worked to rescue dozens of people from flash floods in a city often touted as having the most pleasant weather in the United States. Daniel Campos, the supervisor of Spill the Beans Coffee and Bagels in San Diego, said o…