Too late for OP, but if anyone else is looking at this - I went yesterday Sunday 10-20 and it was gorgeous. Got there before daylight, was greeted by a curious coyote as I was assembling my gear in the semidark, and my hasty shot with the 70-200 f/2.8 came off well enough to be a personal memento. Gotta love 2.8 in the dark.
Elk were in abundance of course, close enough for P&S in some places, but for the big antlers I was glad I had rented a 500 f/4.5 for the day - too long in many cases, I came away with nice headshots of elk... Elk bulls were calm, observed no rutting.
As often happens, by mid-morning some clouds appeared, so the light kept changing. It was warm for this time and that altitude, mid-30s at 6AM then must have been 60 by noon, although a strong wind made it feel chillier.
Trailridge road was open, bitterly cold of course, shops and visitor center closed but lavatories open. Hardly any snow on the high peaks. Still - great views with clear air, just not as stunning as when there is new snow.
Fall colors aplenty down below, but more so on the drive up from Lyons.
Now we are keeping our fingers crossed that next weekend stays as good as it is forecast for one more trip up there.
A great place, no matter when and how and where you go. One day I'll have to learn how to post pix here so I can show what I mean. Promise...