First make sure its set to surface temp... then get lighting figured out and then give it a few hours to stabilize. If leaf temos are still a bit high first ask yourself does it look like i have adequate airflow if not then adjust and give a few hrs. Then if still check humidity and make sure vpd is good if RH is to high the wont transpire as much which also cools the leaf from evaporative cooling. So dial in the VPD. Then if atill high consider lowering temps or increasing exhaust...I had a laser heat gun few days back if tried lead temps 75-80f, now today if Been testing leadf emps 80-85
My veg temp t5 cfl lead temps are 77-79 the grow well but also todsy if upped to 80-85 room temps 83-85f
lol if it sounds Ike a massive balancing act It is and many ways to make adjustments. Let me try and make it simple. If you can't get it in line after doing this then let me know and we can work alternatives.
First set light intensity.
Clones 5k lux
Seedlings 10k lux
Veg 15-45k (start at 15 and increase by 3-5k every few days to a week to a max of 45k)
Flower (start at 45k and increase as above)
Next look the VPD thread I have it suggests KPA (kilopascals) for different stages of growth. Use the calculator or download an app for it that takes leaf temps into account (lots out there)
Then make sure leaf temos are 75-80f
If not check airflow
If still and issue hit me up.