What effect does cloudiness have on relative humidity and temperature?

Cloudiness affects relative humidity and temperature in specific ways. When there's significant cloud cover, it can moderate temperature fluctuations. During the day, clouds reflect sunlight, which can keep temperatures from rising as high as they would under clear skies. Conversely, at night, clouds can trap heat, preventing temperatures from dropping as low as they might in clear conditions.

Regarding relative humidity, clouds can contribute to increased moisture in the atmosphere, but they do not directly correlate with a drastic increase in relative humidity at ground level. The moisture that forms clouds comes from various sources, including evaporation from bodies of water, which can lead to localized increases in humidity but doesn’t imply an overall significant effect on relative humidity across broader areas.

Therefore, while cloudiness does have an influence on temperature and can play a role in local humidity levels, it does not result in a significant change overall; thus, it can be reasonably stated that cloudiness has little effect on both temperature and relative humidity in a general context.