It will be wonderful then. Lows could go down to freezing but just until the sun comes up then up to the 60's. You don't need to worry about freezing your coach up as it would have to go down to 25 for many hours to hurt anything. With the heat running and the inside warm you will be fine. Have camped there many times some clear into late Oct. with no problems at all..
Be sure to go into Rocky Mountain Nat Park and go all the way up Trail Ridge Road. Unbelievably beautiful and road goes up to 12,180 ft. elevation. It is one of the highest continues paved roads in the world.
2004 Monaco Signature Château 43'
Detroit 60 Series, Vorad Collision Avoidance
2011 Honda CR-V EXL, M&G Brakes