On cloudy days, even very hot ones, the metal won’t get hot enough to cook an egg. Eggs will be more likely to firm up in dry weather than humid weather. [1] X Trustworthy Source Library of Congress Official library of the U. S. and main research institution for Congress and the American public Go to source
Try to keep the yolk intact, so you can better observe whether or not it begins to cook. If you use an egg straight from the refrigerator, it’ll cool the surface down more than if you use a room temperature egg.
Most people who try this experiment have found that the sidewalk egg doesn’t cook at all, while the egg on the metal surface cooks slightly.
Be careful when you touch the hot pan! It might not be hot enough to cook an egg, but it can still burn your finger.