Climate thumb|right|Climate chart for Key West Key West has a tropical savanna climate (Köppen Aw, similar to many of the Caribbean islands). Like most localities near the edge of the tropics, Key West has a relatively large range in monthly mean temperatures between the coldest month (January) and the hottest 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 .
climate thumb|right|climate chart for key west key west has a tropical savanna climate (köppen aw similar to many of the caribbean islands) like most localities near the edge of the tropics key west has a relatively large range in monthly mean temperatures between the coldest month (january) and the hottest 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 