We camped here on our way to summiting San G (as we lovingly call it).  Although it was May and the weather was beautiful at sea level, it was cold up here!  There was snow on the ground but the air was the coldest I've ever felt.  

We got to the camping area and it's tucked in the woods so there's lots of nooks and crannies even though it's a primitive open group camping area.  It's right next to a dry lake - go figure - and there are lots of areas to go explore beyond the trail that leads to the top.  

The ranger was there to spend a few nights and said that the night before hit negative digits!  We thought we were prepared with our "all weather" bags and backpacking tent, but I promise you I have never been so cold in my life.  I laid there awake the entire night, and couldn't move a muscle or freezing air would seep in.  The ranger said it only got down to 7 degrees.  When light finally hit we heated some water and went to sit on the frosty ground in the open field/lake and when the sun finally hit us it was like life-changing.  

FYI it's leave no trace and don't attract bears