Humidity
It seems that there is no correlation between humidity and latitude, same latitude can have different range of humidity. Northern Hemisphere (latitude>= 0 degree)has a wide range of humidity levels, between 0% and 100%.However we can observe the humidity of all cities with latitude close to 50 is greater than %60 .Southern Hemisphere has high humidity levels, 80% - 100%, right next to the equator, but going farther south, away from the equator, humidity levels very widely, 0% - 100%. .
