I am terrible about converting to degrees, but temp in degrees should be between 99.5 anf 100.5. My sometimes drops to 98 without hurting anyrhing but a temp over 101 for long periods od time can kill the chicks. My humidity runslow during incubation 25% to 35% I increase to 45 to 50% last three days before hatch. I have marans and they seem to do better with lower humidity.