Final answer:
Evening rainfall in the summertime is often the result of the Earth's surface heating throughout the day, which then causes the warm, moisture-laden air to rise, cool, and condense into clouds that precipitate as rain. Additionally, this pattern can be influenced by weather phenomena such as the summer monsoon and local geographical conditions.
Step-by-step explanation:
It tends to rain at 7:00 PM in the summertime due to the day’s accumulated heat causing convectional rainfall patterns and the potential influence of local microclimates, geographical features, or weather systems like the summer monsoon.
During the day, the Earth's surface gets heated up by the sun, especially during the summer months when the days are longer and the sun's rays are more direct. This heating effect is more pronounced on land, where temperatures can rise substantially, leading to convectional lifting as the warm air rises due to its lower density. As the day progresses and reaches the evening, the air that has risen throughout the day starts to cool down and can no longer hold as much moisture, resulting in condensation and the formation of clouds which can lead to precipitation, commonly known as convectional rainfall.
In some regions, such as in South Asia, the summer monsoon significantly contributes to this pattern. The terrestrial heat causes a vacuum that pulls warm, moist air from the oceans, leading to heavy rainfall when this humid air meets the cooler landmasses. Local geographical features and atmospheric conditions can also exert influence, making rainfall at specific times, like 7:00 PM, more likely in certain locales during the summer.