Low pressure tracking through to our North has bround cloudy skies, scattered showers and cooler temperatures to Northern California today. Showers have mostly been limited to higher elevations closest to the Oregon border but areas of Shasta, Tehama, and Lassen Counties have also had some very light showers hit the ground this afternoon. Temperatures have topped out in the 70's to low 80's in the valley, low to mid 70's in the foothills, and 60's to around 70 degrees in higher elevations. Winds have been out of the Southwest to around 10mph.
The low pressure will start to track to the East on Tuesday, and high pressure will begin to build into the West Coast. Skies will be clearing through the day and we'll be sunny to mostly sunny by the afternoon. Winds will shift from the South to the North, and become stronger as we head towards your Tuesday evening. Sustained winds will reach up to 15mph, and gusts will be up to 25mph. Temperatures will start out in the 50's in the valley and will end up in the low 80's in the afternoon. Foothill areas will start out in the 50's and end up in the 60's to low 70's, while mountain areas start out in the 30's to 40's and end up in the 60's to low 70's. Gusty winds, low humidity, and dry fuels are prompting the National Weather Service out of Sacramento to issue a Fire Weather Watch for the valley from Tuesday evening through Thursday morning. Humidity will be down into the teens on Tuesday and will dip even further on Wednesday.
Warmer, windy, and very dry conditions are ahead for your Wednesday. Sustained winds will be up to around 25mph out of the North, and we'll have potential for gusts up to around 35mph. Humidity will dip into the single digits to teens on Wednesday afternoon, and temperatures will be much warmer than Tuesday. Valley areas will top out in the low 90's, foothills areas will be in the mid 80's, and mountain areas will be in the mid 70's to low 80's. Winds will not be as strong on Thursday, but temperatures will become much hotter.
The lighter winds will allow the Fire Weather Watch to expire on Thursday morning. Temperatures will climb into the mid to high 90's in the valley on Thursday, and then in the high 90's to triple digits from Friday through this weekend. Mountain and foothill areas will top out in the 80's to low 90's on Thursday and then in the low to mid 90's from Friday through this weekend. Dry weather is expected to persist through your entire extended forecast.