SAN DIEGO, Calif. – Gray fog drifts inland this morning, clinging low over Mission Bay and the harbor lights. The air feels damp and still — the kind of quiet start that signals Southern California’s marine layer is here to stay, at least for a few more mornings. But a subtle shift is coming midweek, as the coast warms and a small chance of rain edges in from the northwest.
According to the National Weather Service in San Diego, patchy fog will blanket the coastal and valley zones early Tuesday, reducing visibility for commuters along I-5 and I-805. Conditions will clear by late morning, with sunshine pushing highs near 74°F across the city. Inland communities will warm a bit more, but light winds and cool sea air will keep coastal temperatures steady.
By Wednesday, cloud cover thickens again as a weak Pacific disturbance moves through the region. There’s a 20% chance of light showers late Wednesday into early Thursday — mostly north of downtown and over the inland foothills. Winds may gust near 20 mph during the transition, but the system will move quickly, leaving skies clearer and conditions calmer by Thursday afternoon.
Friday and Saturday return to classic fall warmth, with highs near 75°F and cool, breezy evenings. Patchy fog could redevelop along the beaches late at night, but the weekend looks mild and dry overall — perfect for outdoor plans or late-season beach walks under crisp coastal skies.
Five-Day Forecast for San Diego, CA:
Tue: 74/59 – Morning fog; sunny afternoon.
Wed: 70/59 – Mostly cloudy; slight rain chance late.
Thu: 71/59 – Clearing; mild breeze.
Fri: 75/60 – Sunny; calm and warm.
Sat: 72/60 – Partly sunny; patchy fog early.
