with 61% to 81% approval. Climate Key West has a tropical savanna climate (Köppen Aw, similar to the Caribbean islands). Summers are hot but can feel very hot considering high humidity, spring and fall are warm to hot, and winter is warm. Like most tropical climates, Key West has only a small difference in monthly mean temperatures between the coolest month (January) and the warmest month (July)with the annual range of monthly mean temperatures around . The lowest recorded temperature in Key West is on January 12, 1886, and January 13, 1981. Key West is located in USDA plant hardiness zone 12a, with an annual mean minimum temperature of . Prevailing easterly tradewinds and sea breezes suppress the usual summertime heating, with temperatures rarely reaching . There are 56 days per year with or greater highs, with the average window for such readings June 8 through September 24, shorter than almost the entire southeastern U.S. Low temperatures often remain above , however. The all-time record high temperature is on July 19, 1880, and August 29, 1956. Wet and dry seasons Like most tropical climates, Key West has a two-season wet and dry climate. The period from November through April is normally sunny and quite dry, with only 25 percent of the annual rainfall occurring. May through October is normally the wet season. During the wet season some rain falls on most days, often as brief, but heavy tropical downpours, followed by intense sun. Early morning is the favored time for these showers, which is different from mainland Florida, where showers and thunderstorms usually occur in the afternoon. Easterly (tropical) waves during this season occasionally bring excessive rainfall, while infrequent hurricanes may be accompanied by unusually heavy amounts. On average, rainfall markedly peaks between August and October; the single wettest month in Key West is September, when the threat from tropical weather systems (hurricanes, tropical storms and tropical depressions) is greatest. Key West is the driest city in Florida, averaging just over of rain per year. This is driven primarily by Key West's relative dryness in May, June and July. In mainland Florida peninsular areas like Orlando, Tampa/St. Petersburg and Fort Myers, June and July average monthly rainfalls typically reach , while Key West has only half such amounts over the same period. Hurricanes Key West, like the rest of the Florida Keys, is vulnerable to hurricanes. In recent history, the