Cannabis temp

[JOINTER65]

A friend showed me their grow. It was cold in the room. A temp of 65 degrees humidity 60%. The leaves on the plants seemed to be half the size they should be for the size of the plant. Is this normal growth for cold temp. Would the harvest be half the size?

 

[THC Onlyfans]

65f is fine for lights off but lights on temperature should be at LEAST above 73f. Growth will definitely slow if at 65 all the time, so yes most likely will yield less