Humidity
In the Northern hemisphere there is a weak positive correlation between latitude and max temp (model accounts for 31% of variation). This means that humidity increases as you move away from the equator in the Northern hemisphere. You would expect humidity to increase as you move away from the equator as colder air requires less moisture to become saturated and thus relative humidity tends to be higher in lower temperatures. However, the relationship is very weak. There is no correlation between latitude and max temp in the Southern hemisphere (model accounts for only 29% of variation).
A possible reason for the weak relationship in the North and lack of relationship in the South could be that the data was collected in January, which is mid-summer in the Southern hemisphere and mid-winter in the Northern hemisphere. Humidity is closely linked with temperatures, and temperatures in summer and winter tend to be consistently warm (summer) or cold (winter). There may not be as much variation in humidity across latitudes in summer and winter as there may be in spring or fall when temperatures fluctuate more frequently.
Visualizations
