San Diego woke up under a low, cloudy blanket today with patchy fog at dawn and temperatures hovering near 66°F at San Diego International Airport. The marine layer is expected to thin by midmorning, giving way to mostly sunny skies and a coastal high near 76°F, even as inland valleys and the desert heat up sharply.
Morning Fog, Sunny Afternoons
Patchy fog is likely before 11 AM today, especially along the immediate coast and far western valleys, so drivers should expect reduced visibility during the early commute. By late morning, conditions should clear to sunshine, with southwest winds of 0–10 mph and afternoon highs around 76°F near the shoreline.
Inland Heat and Coastal Tides
Heat Advisories remain in effect for many inland valleys and mountains through 8 PM tomorrow, while an Extreme Heat Warning covers the lower deserts through the same time. Daytime highs are expected to reach the mid‑90s in inland areas and top 110°F in some desert spots.
Forecasters also expect a southeasterly flow beginning next Sunday, bringing monsoonal moisture and a chance of afternoon and evening showers and thunderstorms over the mountains into midweek. That pattern will also mean warmer nights and a higher heat risk by next Wednesday.
According to the National Weather Service San Diego, astronomical high tides of about 7.0–7.2 ft are forecast for July 12–14. A modest south swell could push 4–6 ft surf into evening high tides, increasing the chance of minor coastal flooding on low‑lying boardwalks and beach streets.
Where To Cool Off
If inland heat is a concern, San Diego and the county operate Cool Zones, air‑conditioned libraries and recreation centers that open during hot weather and offer a place to escape the worst of the afternoon. See San Diego County Cool Zones or call 2‑1‑1 for locations and hours.
