A weak cold front is approaching from the north and this will further increase onshore flow and cause the marine layer to rapidly deepen later tonight into Saturday. In fact, there`s a good chance we`ll see some scattered drizzle or even light showers as the front passes through, but totals would be very light in the hundredths of an inch variety where it rain, not everyone will experience showers.
It will be a breezy as well with a wind advisory already in place for the SB county mountains/passes and canyons. The front will usher in cooler air, most notable in the interior valleys where highs fall back into the 50s and lower 60s.
By Monday offshore winds develop and skies clear out, but since the air will be cool to begin with any warming should be slight.
Tuesday still looks offshore but Wednesday a trough digs in and could bring a chance of rain Wednesday into Thursday. Rainfall amounts probably under a half inch either way, and possibly much less.
Dry and slightly warmer weather the last part of Thursday and Friday with an upper ridge returning.