Just about every temperate zone fruit and vegetable is available to you. Ideal middle of the road climate. For a fall garden I would suggest brassicas ( broccoli, cabbage, cauliflower as soon as plants become available) radishes, turnips, kale, rutabaga, mustard, pak choi direct sown in August. Carrots direct sown in August. There are other vegetables which may suit your fancy. Just choose frost resistance, look at the DTM and back up the appropriate numbers of days to plant them. For fruits strawberries do well in fall plantings. Apples peaches, cherries, pears,plums do best planted when dormant in late fall.