Temperature question

I started my grow in the winter. The days were cool at the time, so i decided to have that as the time when i have my plants in darkness. Due to spring it is starting to warm up a bit. Average temp. in room during dark cycle is about 72 f. Will there be any ill effects for having this temp. during dark cycle?

if your asking if you can keep a steady temp. when lights are on or off, yes you can