I've been here in SoCal for almost two years now and I've learned this - don't even bother checking more than a few days in advance lol. Last week it was 58 degrees when I got to work. This week it is supposed to be 95. Heck, in the span of the day there can be a 40 degree change. I'm not sure about the rain though. I think the rain comes later. I remember it being really rainy during December, January, and for sure February, but not so much November.