Yes, they do but this is only because refrigerators are subject to the same laws of physics as everything in the known universe. If the ambient temperature outside the fridge is warm, then the fridge will run more often as it absorbs heat from the surroundings. It tends to be warmer out in the summertime. For instance, even in our homes with AC. It depends heavily on what temperature you maintain in your home during the different seasons. If it was winter and the fridge was outside and the outdoor temp was 10 below zero, then the fridge would never run. If the fridge was in your home and you kept the temperature constant at say 74 degrees Fahrenheit all year long, then the fridge would run exactly the same and would not consume more power in the summer.