How I look at this, is the bar is set rather low and that is a good thing.
Obama had an extraordinary high-60s rating at this point, setting the bar very high. Remember "this was the moment when the rise of the oceans began to slow and our planet began to heal". And people though it so. That is how high the bar was set, and it didn't happen. From that high, there is no up.
Starting with low expectations, Trump can prove us skeptics wrong. At least he has the opportunity. A greater one than Obama had.