I’m starting to notice that as time progresses this month I keep being more and more awake into the night. I can’t relax. I just become so awake.

Go to bed at your usual time and close your eyes. Think of anything you like or nothing at all. Even if your awake most of the night you'll still be rested enough to get thru the day.

it's the weather

Yes you should be concerned.. Lack of sleep will catch up with you and a screwed up biological clock is hard to adjust back to a healthy time schedule..