Today is the longest day of the year. A beautiful sunny long day, and 14 hrs and 47 minutes of day, to be exact.
No specific event to mention today, other than that you should do what I always like to do on the longest day of the year - go watch the sun set. If you live in SF, there's bound to be a hill nearby. Go up it and look west around 8:30 tonight. But don't stare a the sun, silly!
I found this weather site that is quite helpful for those of us microclimate inhabitants. Weather Bonk. It's a great way to totally dork out about the local weather - basically you can see what the temperature is in your neighborhood and how different it is across town. And you can ever do a fog overlay that will show real-time what the fog is doing. It's sunny out by the beach now!
And even better they show a bunch of local webcams, so you can actually see that there's no fog over the Gate - Marin looks quite nice from my desk. No more "oops I guess it's foggy at the beach" picnic plans anymore!