"We have weather today"

After a couple of weeks of sunshine, this week has been quite clouded and today is also fresh and it my rain a little. In southern California, they say "we have weather", as opposed to the 'normal" condition of sunny clear sky, so weather is only "bad weather". Certainly the weather over here is mild and sunny, a cloak-room is nowhere to be found, and this is a very good way to represent the difference between East Coast and West Coast. However, it seems to me that this is also a cultural expression, derived by the fact that but also by the fact that somehow good weather is essential part of the identity of southern California. I think that over one year the days of "weather" may account to a good number.