From my observation I saw that the temperature goes up immediately after rainfall. Then it gradually cools down. I don't really know why it happens, but I think it happens because the ground releases heat (upward) in the form of moisture as water touches the ground. It is the heat trapped in the moisture that raises the temperature for some time, after which it cools down. Do you agree with me? Why do you think this happens? Why doesn't the ground release as much heat when it is not raining?