The Expansion of Water Upon Freezing The fact that water expands upon freezing causes icebergs to float. The fact that water reaches a maximum density at about 4Â°C causes bodies of water to freeze on the top first.
Fort Myers: Annual Weather Averages. July is the hottest month in Fort Myers with an average temperature of 28Â°C (83Â°F) and the coldest is January at 17Â°C (62Â°F) with the most daily sunshine hours at 11 in June. The wettest month is September with an average of 134.9mm of rain.
Zone 9a: 20Â°F to 15Â°F: Fort Lauderdale: Zone 10b: 35Â°F to 30Â°F: Fort McCoy: Zone 9a: 20Â°F to 15Â°F: Fort Meade: Zone 9a: 20Â°F to 15Â°F: Fort Myers: Zone 9b: 25Â°F to 20Â°F: Fort Myers Beach: Zone 10a: 30Â°F to 25Â°F: Fort Myers Shores: Zone 9b: 25Â°F to 20Â°F: Fort Myers/Southwest Florida Intl Arpt: Zone 9b: 25Â°F to 20Â°F: Fort Ogden: Zone 9b: 25Â°F to 20Â°F