Refrigerator Overheating?

I have a 3-year-old Kenmore Elite refrigerator, double door with bottom freezer. This morning my daughter woke me up to tell me that the refrigerator temperature was registering 124 degrees! I checked it and indeed it was, however, the inside of the fridge did not feel that hot, but was warmer than the normal 38 degrees we keep it at.

I took the light bulb out and the temperature slowly went back to normal over about 4 hours or so. What could have caused it to register at 124 degrees? Could it have been the light bulb? The light bulb was tested and it still works.

By mamakatalina from Prescott, AZ