Get an IR temperature gun and give us numbers.

Is there a 20+ degree temperature drop between the upper hose and lower hose?
Are there hot spots on the radiator?

The basic symptoms lean towards an inadequate lockup of the fan clutch but it's all speculation until you get facts to work with.

Get numbers and get back with us.

We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon