Michigan

The apples won't be harvested until October. But when fourth-generation fruit grower Phil Schwallier walks through his orchard in Sparta, Mich., he already knows which ones he won't be able to sell.

"This one's got a little sunburn on it," he says in early July. "A red yellowish color developing here on the part that's facing the sun. That's just from Friday, Saturday, Sunday, when it was so hot."