ThaGreenBandit
Student of Herbal Alchemy
RH is the measure of humidity relative to the max the air is capable of holding at a given pressure and temperature. As temperature increases the air is capable of taking on more water so the percentage humidity relative to max goes down. When you turn your lights off and it gets cooler the percent of water vapor the air is capable of holding goes up. An easier way of looking at it is if you're a big burly strong guy 50 pounds may represent 20% of the total weight you can carry(high temp) and if you're a little lady it may represent 100% of the weight you can carry(lower temp).
Ahhhhhhh, I get it now! Thanks for breaking it down into layman's terms for me, bro. Guess I shoulda paid a bit more attention in science class! LOL!