The low clouds and fog Thursday morning will eventually clear out, but daytime highs will top out a little cooler than Wednesday.
Morning low cloud burning off for hazy sunshine. Mild in the basin and the coastal valleys, but the high desert will be quite warm, even into the triple digits. A little warmer for Saturday for everyone, then cooler from Sunday into next week.
With Wednesday comes the first day of fall. But Californians have been feeling autumnal all summer.