Cool and dry through Saturday with widespread freezing low temperatures in the early morning hours. Temperatures trend warmer this weekend. Systems moving into the Pacific northwest may bring some light precipitation to the northern coastal range and western Shasta county Sunday through Wednesday with a greater threat for widespread precipitation Wednesday night and Thursday.
Discussion
Temperatures are generally trending warmer this morning from around Sacramento south and slightly colder to the north. Dewpoints have come up this morning by 2 to 7 degrees which should help to bring up this mornings lows slightly from yesterday. Greater daytime warming today with temperatures around 3 to 6 degrees warmer than yesterday. Continued warming is also expected for Saturday by a couple of degrees for most locations.
A little bit more moisture is expected to be around tonight with dewpoints coming up slightly to help warm overnight lows a little bit for Saturday morning.
Still very cold start with many lows in the 30 to 32 degree range for the central valley. Sunday and Monday a couple of systems moving into the Pacific northwest will bring the chance for some light precipitation to the northern coastal range and western Shasta County otherwise dry with warmer temperatures.
Extended Discussion (Tuesday through Friday)
Tuesday through Friday the models are starting to come into better agreement during this time frame. In general models are indicating precipitation focused on the Pacific Northwest through Wednesday. Any precipitation would most likely be confined to the northern coastal range and maybe western Shasta County.
Wednesday night and Thursday a trough moves through the region. Timing is in good agreement but the strength of the system is still uncertain. Cluster analysis does keep activity moving into the Pacific Northwest early next week with a shortwave moving through our region late next week in support of current models.