In August 2009, went to Yellowstone and it was around 25 to 35 each night. No hookups but did bring 0 degree sleeping bags, was warm and toasty. Used Mr. Buddy Heater when awake. Do not like to use furnace or other propane devices when sleeping, just a thing I have about gas appliances. With elec. hookup, use ceramic heater, quite and works real nice.
2016 Forest River Surveyor 201RBS
2014 Chevy Silverado 1500 4.3L