We stayed recently when it was 116 during the day, but since the sites had electric, we gave it a shot.  The first two sites we tried had bad electrical setups. The breakers wouldn't lock in place, and kept flipping back to the tripped/open state.  No problem, since we were the only people there - we just notified management and moved sites.  They have water/sewer too, but you'll want to filter the water because of the taste.  The pool across the street was actually cold at night, even though the air temp was 90, so that was great.  

The "saloon" was being renovated and had a limited menu... I'll just say that we wished we had just grabbed some pre-packaged sandwiches from the general store instead.

Not a bad stop for staying in the park, with easy access to supplies, if neeeded.