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Marine Layer Keeps Central Coast Cool Into Early July

Forecasters say weakening onshore flow will let a weak high‑pressure ridge bring more sun with a modest warmup for the Fourth of July.

Overview

  • Morning low clouds and a thick marine layer are holding coastal towns in the low‑to‑mid‑60s with inland valleys generally in the 70s.
  • Temperatures across the region are running roughly 8–12°F below normal and many places have not topped the high 60s in recent days.
  • Light drizzle and mist are common at the coast in the mornings but skies are expected to clear by midday in many microclimates, producing afternoon sun.
  • Forecasts call for a modest warming trend beginning Thursday that should increase sunshine for Fourth of July plans while gusty afternoon winds, including possible Sundowner gusts over Santa Barbara County, will be monitored.
  • Small, contained fires such as the one near San Luis Reservoir are being watched by meteorologists but are not a major concern now and residents are advised to plan cool, layered outdoor clothing for beach visits and fireworks.