An important distinction to make, and something that should help with your understanding, is that it is relative humidity that increases at night. read more
An important distinction to make, and something that should help with your understanding, is that it is relative humidity that increases at night. When we talk about (relative) humidity we aren't referring to an absolute scale, as with temperature. read more
Why does radiation fog start to form early in the morning, but advection fog can "roll in" just about anytime The radiation leaves the earth during the night and the chilling point is cold enough to form dew. read more
Low humidity occurs when it is hot, dry, clear, sunny, windy and when evaporation is high. Therefore, it is common on a cool night to have a relative humidity between 90 and 100 percent and to experience the lowest relative humidity at the same time as the maximum temperature occurs. read more