Papa_Tanswered grow question 3 years ago LEDs tend to be cooler so I don’t know what you’re on about LEDs making higher temps.
Higher temps doesn’t mean higher humity.
A look at your hygrometer in the picture though shows to me that you’re in the proper window. So you’re doing well. Your understanding of LEDs temps and VPD not so much.
Higher temps without supplementing extra CO2 to the environment is no good.
Your plants do look good.