Why do peaches grow in the summer?

Peaches grow in the summer because that's when they receive the most sunlight and heat, which are necessary for the fruit to ripen. Peaches are a warm-season crop, meaning they grow best in hot climates. The ideal temperature for peach trees is between 60 and 85 degrees Fahrenheit. Additionally, peaches need a certain amount of chill hours in order to produce fruit, which is why they are not able to grow in extremely hot climates. The number of chill hours required varies depending on the variety of peach, but most need between 500 and 1,000 hours of chill time.