Grab that umbrella, throw on a jacket and give yourself plenty of extra time to get to where you're going today. Low pressure off the coast of California will swing through our region today, and will provide rain, mountain snow, and the potential for thunderstorms to northern California through your Monday. A Flash Flood Watch is set to expire at 5am in the foothills and valley areas from Butte and Glenn Counties to the south. A Winter Storm Warning is set to stay in effect for the northern Sierra down to 6000' through 11pm Monday night. Snow levels will mostly dip down to around 5000', but snow falling to 4000' isn't out of the question. Up to 2 feet of snow will be possible above 6000' today. I'm continuing to track rain and snow across northern California for the start of your Monday, and there has been some thunderstorm activity just outside of our area overnight. Thunderstorms will be possible in the valley and foothills Monday. Temepratures are starting out in the 50's in the valley, 40's to 50's in the foothills, and 30's to 40's in our mountain zones Monday morning. Winds will mostly be out of the south to 15mph, with gusts up to around 25mph today. Those winds will not be anywhere near as strong as Sunday, but will still have the potential to cause issues. Watch out for down trees or branches on your drive today, be aware of your surroundings when you park, and be prepared for the potential for power outages as the gusty winds diminish through the day. High temperatures are projected to top out in the 50's to lower 60's in the valley, and lower 40's to lower 50's in the foothills and mountains this afternoon.
Showers will become more limited late Monday night, but lighter showers are expected to persist through Tuesday. Temperatures will be a little cooler on Tuesday afternoon, and mountain snow will continue to bring travel impacts to the early portion of the day. The latest models show the low pressure that's bringing this wet weather to our region exiting off to our east on Wednesday, and high pressure building back into northern California. This will result in our region drying out and our temperatures warming up by around 10 degrees compared to Tuesday. Valley areas will mostly end up back in the mid to upper 60's on Wednesday afternoon, while foothill and mountain areas top out in the 50's to 60's. We'll then be sunny to mostly sunny with valley temperatures climbing back into the 70's on Thursday. Models are showing the potential for a weaker wet system tracking through the Pacific Northwest on Friday into Saturday, and that could bring additional light showers to the far northern portions of our region late this week and early this weekend. Tempratures will stay fairly warm on Friday, but will drop back into the mid to upper 60's in the valley on Saturday. Foothill and mountain areas will end up in the 60's late this week and then drop back into the 50's to lower 60's on Saturday. The latest models suggest dry but partly cloudy conditions ahead for Halloween on Sunday, with temperatures mostly ending up in the mid 60's in the valley Sunday afternoon. Foothill and mountain ares can expect high temperatures to top out in teh 50's on Sunday.