The time of the year when the temperature calls for a hoodie. Hoodie weather is subjective to location do to different temperatures. However, most areas will experience the emergence of hoodie weather sometime in late summer or early fall.
GA Guy: Finally! The weather is dipping to a cool 85, time to whip out the hoodies.
PA Guy: What?! That's not hoodie weather! That's shorts and a t-shirt weather here! You so silly!