In Pacifica, the weather can shift as the day goes on.
Closer to the ocean, it’s often cooler, with more fog and wind. Just a few minutes inland in Park Pacifica, it can be quite a bit warmer and brighter.
A gray morning might clear by the afternoon. It could stay foggy all day. Or the day could start warm and fog can roll back in later.
Because of that, locals plan for change. Having a supply of layers in the car is helpful. And knowing your specific neighborhood weather pattern helps too.