You have noticed in many tropical or semi tropical areas of the world some spots are famous for rains that fall at night and stop at dawn for "delightful tourist shopping days". This year in the bay area I haven't seen but maybe one day where it poured all day...otherwise it starts at midnight...ends before dawn. Only our days are 60f not 80f like those tourist destinations.
I haven't heard one weatherperson comment on this phenomena. Sure,some sprinkles in the day..but the heavy hour after hours rains are mostly after hours.