The weekend looks great with plenty of sun and highs in the 60s and 70s, this mild weather lasts into Monday. The only advisory for the weekend is a high surf advisory for W and NW facing beaches for 8-12 foot max surf and potentially dangerous rip.
The real attention in the forecast is in the late Tuesday-Saturday time-frame. The weather looks to become cool, wet and windy.
A series of impulses will push trough a deep trough in the jet stream introducing rain and thunderstorms into the forecast later Tuesday into Saturday. Snow levels will also drop significantly to as lo as 3000-4000ft Wednesday night into Thursday. This could make travel over the Grapevine difficult.
Rainfall could be heavy, models do disagree but there does appear to be 1-3" potential locally with higher totals possible in the mountains of SB county. This much rain with the potential for thunderstorms could mean mud/debris flow for recent fires but also some flooding in non-burn areas due to the total potential and rain rate potential around thunderstorms. This outlook cover the Central Coast and southern CA but northern CA also has similar potential. You'll want to follow forecast updates daily should you plan travel. Numerous graphics can be found on my social media (www.facebook.com/TVDaveHovde/)