How much should outside temps effect temps in my fridge and freezer? This weekend temps were mild. 74 during the day and 45 at night. We were parked so the fridge side of our motorhome got some afternoon sun. Temps varied from 12 degrees in freezer during the day and 6 at night. Fridge varied from 43 during the day to 33 at night. Is this normal for 10 degree swings in 24 hours? We put a new board in this unit and a new thermistor. Temps still vary a lot. Still new to using this kind of