when we were there..mid March -Mid April..it was sunny and warm..some days actually HOT..got sunburned at Sea World and Six Flags..didn't have any rain..nights were comfortable..pretty much perfect vacationing weather!
<font color=navy>That's the end of our "rainy season" so you can get cool, rainy weather (unlikely), to cool, sunny weather (more likely), to hot Santa Ana conditions (90º type weather). We have no way of predicting what kind of weather to expect this far in advance.
DW & I were there in March of '03 & the weather was perfect!! There for five days & never saw one cloud! 50's at night & 70's in the day. We wore jackets at night & in the morning until about 10 or 11 AM, the we'd tie them around our waists. Great trip.
I'll echo Mary Jo's reply. I am always surprised in March in one way or another. One year--more rain then than all winter and one year receently Santa Ana's.
Well thanks everyone. I think it's going to be March no matter what. It just works for our schedules. I'm very excited to go no matter what the weather anyway. I have never been further west than Ohio!