temperature range for growing cannabis
If your grow room feels warm or cold, humid or dry, that is a sign that you may want to look into changing the temperature and/or humidity of your grow area. Generally, cannabis plants prefer temperatures in the 70-85 Â°F (20-30 Â°C) range during the day when lights are on.When lights are off (or at night), cannabis plants are happy with slightly cooler temps.ptimal Temps For Growing Cannabis. Vegetative Stage: Young growing cannabis plants in the vegetative stage prefer temps a bit warmer than in the flowering stage, in the 70-85Â°F (20-30Â°C) range. More about temps in the vegetative stage.