When should I change temperature and humidity for flowering stage

[Scissor-Hanz]

This thread has a VPD chart.
At 40% humidity, your actually in the “green” at 60F !

Factors that influence growth and development ( Temp and VPD)

Temperature Plant growth and development is primarily influenced by temperatures at the growing points of plants (i.e., roots and shoot tips). When we are discussing temperature, it is important to understand that plant temperature (not air temperature) drives physiological responses in plants. Air temperature can differ by as much as 10° F from plant temperature, depending on your light source (HPS, MH, or LED), light intensity, humidity, and air speed. For example, HPS lights emit a…