The onshore flow increases today. That means cooler highs and a return of the morning clouds and fog. Expect a good 5 to 10 degrees of cooling, but highs will remain above average. The increasing onshore flow will bring gusty afternoon winds to the Central Coast beginning today, with breezy conditions also expected across the South Coast.
The marine layer will deepen up by mid-week as a trough of low pressure dives down the west coast. This will push the low clouds and fog into the valleys during the overnight and morning hours, with sunshine for the afternoon hours. The South Coast will continue to see gusty sundowner winds during the evening hours, mostly staying confined to the foothill areas. Temperatures will only warm into the 60s and 70s late this week, and it doesn't look like any big changes are ahead in our holiday weekend forecast.