Some showers are lingering in the Northern end of the valley, the Southern Cascades and the Northern Mountians tonight. Mid valley areas and the Sierra are expected to stay mostly dry tonight and tomorrow. Cloudy skies will keep temperatures warmer as we head into your Friday morning. Valley areas will dip into the low to mid 40's overnight, and mountain areas will end up in the high 20's to mid 30's. There is still a chance for some light showers in Shasta County and the Northern Mountains early in the day tomorrow, but that should taper off by early in the afternoon. Conditions will be cloudy but mostly dry for your Friday. High temperatures will climb into the mid to high 50's in the valley and into the mid to high 40's in most mountain locations.
Dry weather is expected for the early portion of your day on Saturday, but heavy rain and snow will be returning during the afternoon and evening. Showers will arrive along the coast late in the afternoon, and will slowly track into the Sierra by the latter part of your evening on Saturday. A Winter Weather Advisory is set to go into effect for the Shasta County mountains above 3500' at 10pm Saturday night and is currently set to last through 10pm Sunday night. A Winter Weather Advisory will go into effect for portions of the Western Slopes of the Sierra above 4500' at 7am Sunday morning and last through 10pm Sunday night. Snow levels will be down to 3500' in the Northern Mountains, and at around 4500' in the Sierra. 5 to 10 inches of snow are expected down to those elevations, and we'll have the potential for up to 18 inches of snow along higher peaks. Mountain travel impacts will be very likely from Saturday night through the day on Sunday. Roads will be slippery, visibility will be poor and travel delays can be expected. Up to around an inch of rain can be expected in the valley from Saturday evening through Sunday night.
Most of the active weather is expected to taper off by Monday morning. Temperatures will become brisk overnight and a bit cooler for your afternoons. We'll see the break from the rain more than likely continue on Tuesday. The chance for wet weather will then pick up for Christmas Day on Wednesday.