Oh, don't get confused Cheryl..what I am finding out..if it is still a cutting, with no roots yet, still trying to form one, in my area, it likes to be in part sun/part shade and ambient temps at stable 80's and higher during daytime and lows at 57F to 65F.
Plumerias do like full sun, I think, eventually as it gets its bearings right, when its roots are fully formed, with good leaves, ably drinking away.