I hope everyone was able to enjoy the spring-like weather while it lasted! Big changes are moving into Northern California today, and we'll be staying active and cooler through your weekend. Showers are still off the coast as we start your Friday, but will be returning to all of Northern California today. Temperatures are starting out very warm this morning. Valley areas are in the 50's for the start of your Friday and mountain areas are in the 30's to 40's. Winds are already pickup up into the 15 to 20mph range out of the South early today, and gusts up to around 45mph will be possible out of the South tonight. Looks like showers will be holding off until this afternoon for most areas, but areas closer to the coast will get wet weather earlier. Snow levels will range from around 4500' to 5000' today. Temperatures will top out in the mid to high 50's in the valley, and in the mid to high 40's in the mountains. Rain and snow will become heavier tonight, and stay heavy through Saturday morning. There is some concern for debris flows, and mudslides in recent burn scars during that time.
Showers will still be widespread on Saturday afternoon, but will not be as heavy as the morning hours. Snow levels will dip into the 3500' to 4000' range late Saturday into early Sunday. High temperatures will top out in the mid 50's in the valley this weekend. There will be a chance for valley thunderstorms on Saturday afternoon. Isolated areas of heavy rain will be possible, which could result in some localized flooding. Another colder wet system will be arriving in our area on Sunday. Snow levels will dip into the 3000' range on Sunday, so snow will be possible in the upper foothills. There is a chance for snow levels dropping to below 1000' on Monday as the coldest airmass will be in place, and showers continue. Thunderstorms will also be possible in the valley on Monday. A dusting of snow down to around 500' could be possible in Shasta County for the start of next week. Up to a foot of snow will be possible down to 2500' on Monday. Dry but cold weather will be on tap for Tuesday through the middle of next week.