Cold air has settled over northern California, and we have said goodbye to the unseasonable warmth. We've had spotty rain and snow showers along with isolated thunderstorms, and more mountain snow is coming. An area of low pressure will continue to move over our region tonight through Saturday, and that will maintain the unstable weather for our area. Tonight will be a partly cloudy and colder night with scattered snow showers over the mountains. Lows will range from the teens and 20s in the mountains to the 30s and lower 40s in the valley and foothills. Saturday will be a partly to mostly cloudy day with a few more mountain snow showers. Highs will range from the 40s in the mountains to the 50s and lower 60s in the valley.
Another disturbance will move over California late Saturday and Sunday, and that will bring another chance for mainly mountain snow through Sunday afternoon. A Winter Storm Warning is in effect from Saturday afternoon through Sunday afternoon. We'll have a break from the unsettled weather Monday and early Tuesday before a third weak storm brings moderate wind and isolated showers late Tuesday and Wednesday. A fourth and stronger storm will arrive next Thursday and Friday, bringing a better chance for more valley rain and mountain snow. Highs and lows will stay below average through next week. Highs will range from the 40s in the mountains to the 50s and lower 60s in the foothills and the valley next week.