Join Date: Jun 2017
Location: Florida Panhandle
Temperature goes down, the pressure will go down. Temperature goes up, the pressure will go up. I see you're in FL like me (a bit further south). In the Spring, the temps were all over the place. If you filled the tires on a warmer day, then a few weeks later when you checked, the temp had gone down, expect the pressure to have gone down.
After I cupped the tires on my first heavy bike (Ultra Limited), they told me to check the pressure every week or two. I do this now because tires are expensive. Prior I had been checking like I would do on my truck. It was pointed out to me that the volume of air in the truck tire is much, much greater than a motorcycle tire. Loose the same volume from the truck tire, you won't see much of a change compared to loosing the same volume from the motorcycle tire.