California seasons exist and are quite distinct. There is the summer season, and the winter season. They aren't what most people think of summer or winter, they just happen to occur at the same time. Spring and fall are just the blending of one into the other.

(Livermore)
There is the season of the golden hillsides. There is the season of green grass.

(San Francisco)
There is the season of sun, there is the season of fog. And between these two is the time when glorious sunsets over the mountains with clouds rolling in from the ocean over the hills like a slow motion waterfall.

(Santa Cruz)
There is the season of dry creeks, and the season of babbling brooks when waterfalls once again fall over ancient rocks.

(Napa)
There is the season of harvest of grapes after months of slow growth. There is the season of aging, as these grapes are placed in great oak barrels and left until maturity.

(Tahoe)
There is the season of snow in the mountains and skiing down the slopes, watching the crackling fire with some fondue and fruit wine. There is the season of slot machines, blackjack tables, roulette, and watered down drinks.