California is an absolutely humongous state and it most certainly experiences all of the seasons. San Francisco and the surrounding areas are a moderate climate

California is an absolutely humongous state and it most certainly experiences all of the seasons. San Francisco and the surrounding areas are a moderate climate, southern CA is certainly warm most of the year. Northern CA and Eastern CA experience all four seasons and the central valley is a bit of a mix depending on how far north you are. Lake Tahoe for example is a just a three hour drive (roughly) from the Bay area and will go from 80-90 degree days in the summer to 0 degree days with six feet of snow on the ground in the winter with typical spring and fall weather also.