The fog and marine layer filled in over the Central Coast regions of San Luis Obispo and Santa Barbara Counties overnight. Commuters are waking up to a dense fog advisory that will remain in effect through 9:00 a.m. Drivers could experience patches of dense fog throughout the morning commute, so it's important to have headlights on and to increase following distance if needed.
Gentle onshore winds will also develop Wednesday, which could keep much of the coastal communities overcast through the afternoon, otherwise, expect patchy clouds throughout the coastal interior valleys by the afternoon. Temperatures will continue to trend down, bringing maximum daytime highs for the beaches right around the low to mid-60s. The coastal valleys will also cool down and stay close to the upper 60s, while the inland valley communities will be close to the upper 70s.
A warmer weekend is still on tap as an upper ridge will slide into the area by the end of the week. Offshore flow will develop overnight and daytime highs will warm-up by three to six degrees by Sunday.