Ha, I spent a whole summer there once and it rained exactly one time. I was walking along and the raindrops evaporated as soon as they hit the sidewalk.
When I worked for McDonnell Douglas at JSC, the folks at Rockwell in Downey would request me to come for a work trip because every time I showed up it rained.
One time Queen Elizabeth was visiting Reagan at his ranch and it had torrential rains.
Once the roof at the visitors center of Rockwell collapsed from all of the rain.
Once I was eating breakfast at the Empire motel across the street from Rockwell and lightning hit the telephone pole in the parking lot. A minute or two later the light fixture in the ceiling started filling up with water.
Once we were eating dinner down at the Queen Mary and it rained so hard that the freeway flooded and we had troubles getting back. The martinis we had did not have anything to do with it but it may have contributed to us ending up in Compton instead of Downey.
Fun times.
I only experienced two earthquakes though.