California Weather Alert: Patchy Fog Then Sun Returns by Thursday Morning — Summer Weather Alert for San Diego Drivers on I-5

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Fog
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San Diego, CA – Morning fog could cause delays along I-5 and coastal roads Thursday, but sunshine is set to return before noon across San Diego.

According to the National Weather Service, low clouds and patchy fog will linger through 11 a.m. Thursday, July 10, before giving way to mostly sunny skies. Highs will reach near 79°F, with calm winds shifting west around 5 mph by midday. Commuters should expect reduced visibility before sunrise and plan for extra travel time, especially along marine-influenced corridors like I-805 and Highway 1.

Thursday night brings increasing clouds and a low near 65°F, but conditions remain dry. By Friday, skies will gradually clear again, with a high near 75°F—ideal for outdoor plans. Cloud cover builds back in Friday night, and the weekend kicks off with more morning gray before midday sun returns Saturday.

Here’s the extended five-day summer weather preview for San Diego, starting Thursday, July 10:

  • Thursday: Patchy fog then sunny. High 79°F.
  • Friday: Decreasing clouds, mostly sunny. High 75°F.
  • Saturday: Cloudy through mid-morning, then gradual clearing. High 74°F.
  • Sunday: Similar pattern—clouds early, clearing by afternoon. High 75°F.
  • Monday: Morning clouds, afternoon sun. High 74°F.