Why are hills cooler during summer?

The hills are cooler during summer as air density decreses up the hills so does the temperature. Air becomes cooler with altitude because the heat is lost by radiation from the earth and as the air expands, it cools. read more

due to the curvature of the earth,the amount of solar energy received varies according to latitude.As a result temperature generally decreases from the equator towards The Poles.As one goes from the surface of the earth to higher altitudes atmosphere becomes less dense and temperature decreases.The hills are therefore cooler during summer. read more

During summer, hot wind form the sufrace of the land move towards the higher toward the hill areas and as a result the cold wind form the hill blow downwards to occupy those empty areas which bring cold wind, thus making it cooler during summer.w. read more