Dense Fog Returns as Coastal California Shifts From Heat to Weekend Cooldown

Forecasts point to a brief December warm-up by midweek after the marine push.

Overview

A Dense Fog Advisory is in effect this morning for Los Angeles, Ventura and Santa Barbara counties, with Central Coast beaches also under dense fog through 10 a.m. Saturday.
Early commuters may face significantly reduced visibility, and forecasters advise using low-beam headlights in fog.
Friday marks the last above-average day of the current warm spell, with many locations reaching the 70s to 80s under mostly clear skies.
Onshore flow and increasing cloud cover are set to drop most areas into the 60s by Sunday, with slower morning clearing under a deeper marine layer.
Outlooks indicate a short December mini heatwave building Monday through Wednesday, likely pushing temperatures back above average into next weekend.