Sunny days are great but I do love foggy days. The world is less expansive, less vast. It is closer, more intimate. And perhaps more mysterious. (Without there being an intentional pun on 'mist'.)
One Saturday, a year or so ago, I awoke to find that outside there was a thick fog, so I dressed quickly and went out for a walk. I even took photographs of the fog - or rather of familar sights now rendered unfamiliar by being wrapped in a blanket of mist.
Here is one of my photographs: