The Northstate will once again see a chilly start followed by a warm afternoon. A cold front will move in by Saturday, bringing cooler weather and a slight chance of rain
A ridge of high pressure will begin to get flattened and weakened by an approaching trough of low pressure from the Gulf of Alaska. The ridge will still be strong enough to warm the majority of the valley into the mid 70s this afternoon.
The trough will continue to drop in from out of the north and northwest late tonight. The leading cold front will bring precipitation into the Northstate just after midnight tonight.
The big winners, when it comes to precipitation totals, will be Trinity, Siskiyou and the higher elevations of Shasta county and of course the NorthCoast. There is even a chance of some showers down to the valley floor by the late morning hours Saturday.
Behind the cold front cooler air will move in and we'll see high fall into the mid 60s by Sunday for the valley floor.
As high pressure continues to build in from the northwest Sunday and Monday winds will also begin to pick up. You can expect gusty north winds by Monday.