Quieter weather is ahead for northern California as the weekend approaches. A weak ridge of high pressure will push over the West Coast, which will begin to clear our sky, and bring cooler lows and warmer highs to our area. Tonight will be a mostly clear to clear night for our region as our latest storm passes east of California. Lows will range from the teens and 20s in the mountains to the 30s and lower 40s in the valley and foothills. Friday will be a mostly sunny to sunny day for all areas with light to moderate breezes and seasonable temperatures. Highs will range from the upper 40s and lower 50s in the mountains. The foothills and valley can expect highs ranging from the mid 50s to the mid 60s.
The weak ridge which begins to build over California on Friday will stay overhead on Saturday and early Sunday, and that will continue our bright sky and quiet weather. The first of two small troughs of low pressure will move over the Pacific Northwest and northern California late Sunday and Monday, with a second weak trough moving overhead late next Tuesday and Wednesday. Although showers are possible mainly over the mountains, very little rain or snow will fall. Quieter weather will return by next Thursday. Lows will remain seasonably cool with teens and 20s in the mountains, and 30s and 40s in the foothills and valley. Highs will continue to range from the 40s in the mountains to the 60s in the valley.