The actual best vaporizer temperature for weed (cannabis a.k.a. marijuana), can depend on a number of factors. Generally, the best vaporizer temperature range for marijuana/thc vaporization between 355°-365°F (180°-185°C). As you increase or decrease the temperature through this range, different terpenes are released, causing the a difference in taste and effect.
From Wikipedia – “The aromatic terpenoids begin to vaporize at 126.0 °C (258.8 °F), but the more bio-active tetrahydrocannabinol (THC), cannabidiol (CBD) and cannabinol (CBN) do not vaporize until near their respective boiling points: THC 157 °C (315 °F), CBD 160–180°C (320°F-356°F), and CBN 185 °C (365 °F)”
THC is the molecule in weed that will get you high. CBD and CBN are more related to the medicinal benefits of cannabis. For example, strains high in CBD have been found to be very helpful in lowering the amount of seizures in certain patients. It’s amazing that this medicine has been illegal in the United States for this long, but that’s a different story.