I have no way to keep eggs at 55-60 degrees until ready for incubation so today I put a couple of eggs in the fridge until I built my incubator. Will this make them unhatchable?
A whole lot of things given on here are guidelines, not absolute laws of nature. Things like how to store eggs, how much space is needed in a coop and run or on roosts, even how to feed them. Following the guidelines exactly does not guarantee total absolute success. Violating the guidelines does not guarantee total absolute failure. Following the guidelines as best you can improves your odds of success. Nothing more. No guarantees, just better odds in your favor.
With practically everything to do with chickens, it’s not a real clear hard line. It’s not that if you turn them 3 times a day 100% will hatch but if you turn them two times a day, absolutely zero will hatch. More are likely to hatch healthy if you turn them a little more. It’s not if you store the eggs ate 55 degrees you’ll get a perfect hatch but if you store them cooler or warmer absolutely none will hatch. The further you are from the ideal conditions and the longer you are away from them, the less likely you are to get a great hatch, but being off is not an absolute guarantee of failure.
The experts, the ones that maybe hatch 1,000,000 chicks a week in incubators that might hold 60,000 or even 120,000 eggs, have determined that they get a better hatch rate if the eggs are stored a certain way. They have determined optimums for what temperatures, humidity levels, how long they are stored, what positions they are stored in, things like that. With them, a 1% difference is 10,000 chicks each week. That’s noticeable. I wouldn’t notice a 1% difference. I just don’t hatch that many.
I don’t have any place that is perfect to store eggs for hatching. I just plug in my turner in a spare bedroom and whatever the room temperature and humidity happens to be is how they are stored. I assure you, we don’t set the thermostat for the house at 55 degrees. I usually get pretty good hatch rates. It’s not “ideal” but it’s the conditions “I deal” with. That’s the best I can reasonably do. The best some people in hot climates can do is to store them in the refrigerator. And don’t forget that not all refrigerators are exactly the same temperatures everywhere inside that refrigerator. Refrigerators have warm or cool spots and they have thermostats. Conditions in one might be closer to the ideal than in another.
A lot of people seem to think that just because they have violated a guideline and had a good hatch that the guidelines are bogus. It doesn’t work that way. Those eggs can be pretty darn tough. There are a lot of conditions where they can hatch. The closer you are to the ideal the better your odds, but the sweet spot for hatching is pretty wide. Just do the best you can and you will probably do OK.