You might think that the fridge makes everything last longer, but when it comes to bread, the opposite is true. Putting bread in the fridge can make it go stale a lot faster.
Bread goes stale when the water in its starch molecules migrates to the exterior of the loaf, a process that happens much faster in fridge-cold temperatures.
Starches undergo retrogradation between 23 degrees and 140 degrees Fahrenheit. This is why the freezer significantly slows staling, but the fridge doesn't.