This is the exact same way you would normally find the darkest parts of the image when you're removing any color casts from the shadow areas, but now, thanks to the Difference blend mode, these darkest areas represent the areas closest to midtone gray.
The warmest sea in Key Largo in March is 26Â°C/79Â°F, and the coldest sea temperature in March is 22Â°C/72Â°F. Average water temperature in Key Largo in March is 24Â°C/75Â°F. You can choose any other years:
Key Largo enjoys pleasantly hot temperatures throughout most the year. Usually daily highs are in the 80s Fahrenheit. Thermometers typically reach into the 90s just 22 days annually, scattered from June to September. It normally doesn't get any hotter than 100 Â°F (38 Â°C) at this Florida Keys island.