in the wild bredli see temps over 100F and as low as in the 50s. The temps over those 2 days will not phase the snake nearly as much as the bagging and moving stress will. I would just put the bagged snake in a closet or somewhere dark and quiet while you unpack the truck. Setup the cage as soon as you can and the snake will be fine. They're significantly hardier than people give them credit for and won't remember the 2 days of stress a few weeks after they settle in.