Low pressure off the coast of California and Oregon has brought wet and cooler weather back to Northern California today and that trend will persist over the next couple of days. Light to moderate showers moved into our Northern zones earlier on in the day and have spread across the remainder of the valley and foothills this afternoon. Showers will move into the Sierra this evening. Up to around a quarter of an inch of rain is expected in most areas today, but some portions of our region may see slightly more than that. A cold front that moved in before noon kept temperatures well below average for this time of year, with the majority of the valley peaking in the mid 60's early in the day and then cooling back into the mid to high 50's this afternoon. Oroville was the one area of the valley that did manage to make it into the 70's on Monday afternoon. Foothill areas topped out in the 50's to low 60's and mountain areas mostly ended up in the 50's. Sustained winds reached up to around 20mph out of the South, and we did have gusts up to around 30mph.
Rain, modest high elevation snow, and the potential for thunderstorms are on the way for your Tuesday. Snow levels are projected to hover in the 6500' to 7500' range, and up to around 4 inches of snow will be possible. Most valley areas will have the potential for up to around a half an inch of rain, but the Northern end of the valley could get up to around an inch through this event. Localized totals could be higher in areas where thunderstorms develop, and we could also be dealing with hail from thunderstorms mid day Tuesday through the evening. The best chance for thunderstorms is expected to be in Shasta and Tehama Counties, but Butte County and the Sierra could also have some active weather on Tuesday afternoon and evening. Temperatures will dip into the 40's to 50's in the valley and foothills tonight, and in the 30's to 40's in the mountains. High temperatures will will end up in the mid 60's to around 70 in the valley on Tuesday afternoon, while foothill and mountain areas end up in the 50's. Winds will be sustained up to around 20mph out of the South, and we could be seeing gusts up to around 35mph in the valley, with gusts up to around 45mph in the Sierra.
The potential for showers will be continuing in our region through Wednesday, and we'll still have a decent chance for at least some showers on Thursday. The best chance for lingering showers on Thursday will be in higher elevations and the Northern end of the valley. Temperatures will be slightly cooler on Wednesday, but will start warm again on Thursday. Valley areas will mostly end up back in the low to mid 70's on Thursday afternoon. We'll be dry and warmer over our region on Friday. The current projected has valley areas climbing back into the low 80's on Friday afternoon under partly cloudy to sunny skies.
Another wet system is expected to move into the West Coast on Saturday and that will be bringing more rain on the way for your weekend. Saturday will start out dry but the potential for showers will return through the day. Temperatures will be up to around average on Saturday afternoon. Cooler temperatures and widespread shwowers are expected on Sunday and Monday of your extended forecast. High temperatures will mostly be back in the low 70's in the valley for the latter part of your weekend and the start of next work week.