In the summer, highs generally reach the 60's and 70's, lows in the 40's and 50's, for most of the state. They don't come around until fall. But, since the tourist season is so short, hotels and restaurants in touristy areas are quite pricey.
Clouds often surround the mountain, so clear views are rare.
It's not hard to go a week without seeing the summit. During my stay at Denali Park I saw the bottom part of the mountain but never the summit. It is a very impressive mountain, but Denali Park is much more than the mountain. In fact, the original purpose for establishing the park was to protect the abundant wildlife there. I had no desire to come face to face with one on my bicycle.