Like farmers' market produce (2,6)
(Other definitions for in season that I've seen before include "when crops are ready?" , "(Of female mammal) ready to mate" , "Available during Yuletide?" , "Ripe; ready for use" , "ready to eat" .)
(Other definitions for local that I've seen before include "The familiar neighbourhood pub" , "Of the particular neighbourhood" , "Parish pump" , "In the vicinity" , "Pub, maybe" .)