Latitude vs Humidity
The majority of the cities were experiencing humidity levels greater than 50%. The higher the humidity the greater the amount of moisture is in the air. If you refer to the Temperature Graph, you will see higher temperatures closer to the equator, or zero latitude, yet the Humidity Graph is showing high levels of humidity spread somewhat evenly across the entire latitude range.
It seems high levels of humidity can be in places of high and low temperatures. Based upon this observation, it does not appear that Latitude has a direct impact on humidity. At higher temperatures, the higher humidity levels are felt because persperation does not evaporate off the body thus causing a cooling effect.
Visualizations
