 Memphis has a humid subtropical climate (Köppen "Cfa"), with four distinct seasons, and is located in USDA Plant Hardiness Zone 8, as compared to most of the state, which is located in Zone 7.Historically, April is the month with the highest frequency of tornadoes, though tornadoes have occurred every month of the year.Memphis is sunny approximately 65% of the time, with monthly percent possible sunshine ranging from 50% in December to 74% in June thru August.