[JRTJH]

In moderate temperatures, mine runs about 15-20 and 33-36. When we were in Las Vegas earlier this summer, it ran 20-30 and 38-40, depending on where the sun was hitting the trailer. When the refrigerator vents were in the sunshine, temps rose slightly, when in the shade, they fell, but with 100+ air temps, the refrigerator worked harder and had trouble "keeping up" with the temps we see when the air temp is in the 60's or 70's.

So, depending on the circumstances that you're in, what you have can be normal. There are some things you can do to improve the cooling. Shade the trailer sidewall where the refrigerator sits, make sure the fans are clean and properly adjusted (and running when it's hot) and refrain from "grazing" with the refrigerator door open. Many people will open the door, search for what they want, stand and contemplate their decisions and "dilly/dally" with the door open. Doing that allows much of the "hard to obtain cold air" to escape to the floor (if you stand there barefoot, you know what I'm talking about).

Ideally, open the refrigerator only when necessary, know what you're getting and do it quickly with the intention of closing the refrigerator door as quickly as you can. Once the cold air is lost, it takes significant work for the refrigerator to recover. Conserving the cold will help keep the temps at their lowest possible point.