Will eggs hatch at 102 degrees?
Also asked, what temperature will kill chicken eggs?
The acceptable range is 97° to 102°F. Mortality is seen if the temperature drops below 96°F or rises above 103°F for a number of hours. If the temperature stays at either extreme for several days, the eggs may not hatch. Overheating is more critical than underheating.
Similarly one may ask, how hot can an egg get and still hatch?
Many people assume that since the ideal temperature is 99.5 degrees F that the temperature must stay at that exact point the entire time. The reality is that there is an acceptable range in which the eggs will hatch just fine.
For hatching to occur, the eggs must be fertile. Fertile eggs can be hatched from hens who are housed with a rooster. Prior to incubation, a fertilized egg can be stored for a maximum of 7 days in a cool room kept at a steady 55-60 degrees Fahrenheit (not in the refrigerator – it's too cold!).