How hot is Hot?

I was wondering, Is the temp reading on the sm accurate? How hot is to hot for the unit? Any idea’s or thoughts? Could to high of temp interfere with connection?

Just fyi, Ive seen temps of up to 130 degrees. Today was one of our cooler days. It was 71 degrees out. Not the normal 95 degrees. The RF links seemed to be much more stable than when its HOT out. Thermal fade?