Central Coast Warming Trend Begins; Spotty Election Day Drizzle Possible

Rebuilding upper-level high pressure will suppress marine fog, possibly driving compressional heating that lifts highs into the upper 70s to low 80s.

Overview

Election Day will start cloudy with a slight chance of early-morning drizzle or isolated sprinkles mainly in extreme northern San Luis Obispo County near Cambria and San Simeon.
An upper-level ridge is rebuilding over California and is the main driver of a multi-day warming trend across San Luis Obispo and Santa Barbara counties.
Inland valleys are forecast to warm fastest and may reach the low 80s as the week progresses while coastal valleys climb from the 60s toward the 70s.
Forecasters say late-week offshore northeast pressure gradients could produce downslope winds that cause rapid compressional heating, but the exact timing and ridge-top gust strength remain uncertain because local pressure gradients are still evolving.
Mountain elevations will still produce sharp overnight radiational cooling, so residents should expect warm afternoons but cooler nights and should watch local forecasts if they have outdoor plans or live near exposed ridgelines.