An upper level low will move toward San Diego Monday. As a result, the Central Coast will have warmer daytime highs and dry conditions.
Daytime highs for the interior valleys will range from the mid-80s to low 90s. The inland valleys will feel the heat through mid-week as temperatures will warm by two to four degrees each day until Wednesday. After that, a low-pressure trough is expected to swing back over California, which will result in a cooling trend.
The coastal valleys will remain fairly mild with temperatures expected to stay close to the low to mid-70s. For the beaches, daytime highs will be right around the upper 60s.
The marine layer will continue to hug the coastline Monday morning but afternoon clearing is in the forecast. Foggy conditions will fill in over the coastal and interior valleys through the morning commute before burning off by early afternoon.