Throw on a jacket over light layers and grab your sunglasses as you get ready to head out the door on this final day of the Summer season Friday. The area of low pressure to our northeast that brought our gusty winds, Sierra showers and thunderstorms and elevated fire danger over the last few days is tracking east today, and high pressure is building into northern California from the Pacific today. This will leave us with sunshine, lighter winds, a cooler morning, and mild high temperatures on tap for your final day of the Summer season today. Skies have been clear overnight, and the lack of clouds to trap in the heat paired with lighter winds are both contributing to a much cooler start to the day today. We have a Freeze Warning in effect in Modoc County through 8am Friday due to the potential for temperatures dipping into the 20's there early Friday. Temperatures are trending 3 to 9 degrees cooler for the start of your Friday morning compared to early Thursday. Valley areas have dipped into the 50's, foothill areas have dipped into the 40's to 50's, and our mountain zones are starting out in the 20's to 30's early Friday morning. Winds will mostly stay light today, and we'll have then out of variable directions depending on where you are. No matter what direction the wind is coming from in your backyard it's not going to be an issue for you today. High temperatures are projected to top out in the upper 70's to mid 80's in the valley, and mid 60's to mid 70's in our foothill and mountain zones Friday afternoon. Clear skies and modest winds will allow for temperatures to cool down quickly tonight, and you may want to pack a jacket or blanket if you're heading out to watch high school football tonight.
High pressure off the coast will continue to be the main influence in our weather pattern as we head into your first day of Fall on Saturday, and our temperatures are projected to end up in the same range as what we have on tap for your final day of Summer on Friday. We'll have sunny skies through the day, and the one big difference arriving Saturday is breezy south winds to 15mph. Low temperatures will start out in the 50's in the valley, 40's to 50's in our foothill areas, and 20's to 30's in our mountain zones early in the day on Saturday. High temperatures are projected to climb into the upper 70's to mid 80's in the valley, and mid 60's to mid 70's in our foothill and mountain areas Saturday afternoon. Low pressure approaching the Pacific Northwest coast from the Gulf of Alaska will drive our stronger south breeze on Saturday, and will then leave us with a cooling trend, more cloud cover, and the potential for showers from Sunday through early next week. The latest models are keeping the vast majority of our region dry on Sunday, but we'll have mostly cloudy skies. Some light showers will be possible in the Northern Mountains Sunday afternoon. Temperatures will start out in a similar to modestly warmer range early Sunday as we'll have more clouds overhead to trap in a little bit more heat from Saturday. Mostly cloudy skies with some patchy breaks of sunshine are expected through the day on Sunday. High temperatures will end up a little cooler on Sunday. Valley areas will top out in the mid to upper 70's, and we'll range from the 60's to lower 70's in most foothill and mountain areas Sunday afternoon.
Low pressure will track into the Pacific Northwest on Monday, and that will bring cooler temperatures, cloudy skies, and increasing shower chances to northern California through the day. Models are mostly showing showers in the Northern Mountains early in the day, in the Redding area by mid-day, and then widespread showers across our region by Monday evening. Temperatures will start out in the 50's in the valley, 40's to 50's in the foothills, and 30's to 50's in our mountain zones Monday morning. Gusty south winds are also looking likely through the day on Monday. High temperatures are projected to range from the mid 60's to mid 70's in the valley, and 50's to 60's in our foothill and mountain areas Monday afternoon. Shower chances will linger through early to mid day on Tuesday, but most models show our region drying out by Tuesday afternoon. We'll still be cloudy on Tuesday, will have modestly warmer high temperatures due to the cloud cover overhead, and similar to warmer high temperatures on tap for your afternoon. Valley areas will climb back into the mid 70's in the valley, and foothill and mountain zones will mostly range from the lower 60's to lower 70's Tuesday afternoon. We'll then have the return of sunny skies, and mild temperatures on tap for the middle of next week. Valley areas will mostly start out in the 50's and top out in the lower 80's from the middle to latter part of next week. Foothill and mountain zones will have high temperatures in the 60's to mid 70's from the middle to latter half of next week.