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:
1 The lowest monthly average temperature in Siesta Key for February is 62 degrees. 2  The most monthly precipitation in Siesta Key occurs in July with 7.7 inches.  The air quality index in Siesta Key is 23% better than the national average.