My white leghorns have been laying just about an egg a day for over a month now. Lowest temp the past 30 days was 40 degrees. Highest temp last 30 days 95 degrees. They seem to not be bothered by the temperature change as much as I thought they would. Of course every bird is different but they’ve been great and while mine are a little skittish I couldn’t be happier that I got this particular breed.