incubation?

[Kenchap]

ok so i dont know why im so parinoid this year i have been breeding for a while, i geuss cause this will be my biggest year and its been so different then past years! so heres my question my incubator in running at 89.7 degrees and it keeps jumping every once in a while to 90.1, it never goes lower than 89.7 and never higher than 90.1, should i be conserned or is that little of a jump not that big of a deal?
thanks

My incubator goes from 85-92 degress every day. I've never had a problem. Humidity is a bigger deal then temps.