Try Grass hoppers, as fun to catch as fish, in the a.m. they are slower because of the cold temps. Just use a casting bubble and fish them close to the bank in deep runs and holes. Also look for springs dumping cold water into the main river, trout likecold water. Spinners also work well.

My only problem with worms is that they kill alot of fish that you may not want to keep. Fish tend to take the hook vary deep with worms. Also in summer trout are under alot of stress,low warmwater, so if youplan on lettinga fish go, land it fast and dont keep it out of the water for vary long.

I would have to say that most rivers in the GR area would be 60deg and up, and if you have one that stays colder then that this time of year dont tell anyone about it.

Good luck