I don't know about the rest of the country, but where I live (northern Arizona), temperatures are starting to cool down ... which means the Fall trout fishing is just around the corner.
Trout become a lot more active when warm summer temps starting cooling down. They like cooler water (which is typically more oxygenated) and so will start feeding near the water's surface. This is good news for anglers!
This time of year, the best trout fishing still tends to be early morning and early evening ... but as mid-day temps drop further, trout will be easier to catch all day long.