I assume this consistent fog is an function of higher latitudes with dry hot inlands and cool oceans. Especially in the desert, fog will form near the coast. A

I assume this consistent fog is an function of higher latitudes with dry hot inlands and cool oceans. Especially in the desert, fog will form near the coast. As SF Bay adds a lot of coast line, meaning more cool ocean closer to more hot land than most coastal cities, I'd imagine that has a large effect on why fog forms. If ocean temps rise faster than average land temps, the average difference between them will shrink, perhaps bringing on average less fog? Interesting reading: https://ggweather.com/sf/narrative.html https://ggweather.com/sf/narrative.html