An elongated area of low pressure will produce coastal clouds for the next several days. Afternoon clearing will in the interior and coastal valleys but some beaches could stay gray all day.
Temps will be a microclimate blend of the 50s at the coolest beaches to the 70s in the coastal valleys and 70s and lower 80s in the interior valleys.
An upper-level low-pressure system off the coast will gradually move closer to California by Friday cranking up the winds: NW 15-25mpg and could peak with 30-35mph wind gusts over the weekend near the coast. The increasing winds will help clear out marine layer clouds.
A weak mid-level low will keep things cool to start next week, it could deepen marine layer enough for mist or drizzle but not significant rain.