There is a forecast for El Nino this winter, so there could be a bit more rain than average. I've said for many years that the meaning of "average" weather in California is quite different from many other places. Average is really a numerical average and the standard deviation is much higher than other places. That is, there are years when there can be almost no rain at all, some where the rain is average and evenly spread out throughout the winter, average numerically but where it all comes within a month or so, or very wet when it rains twice or more the numerical average.
The weather is very dependent on the temperature of the ocean, and even small variations in that can cause big variations in the amount and timing of the rain.