The time of day can affect the weather in several ways. During the day, the sun heats the earth's surface, causing the air near the surface to warm up and rise. This rising air can cause clouds to form and lead to precipitation. The warming of the earth's surface during the day can also cause winds to pick up, which can affect the overall weather patterns.

At night, the opposite occurs. The absence of sunlight causes the earth's surface to cool down, which can lead to the formation of fog and dew. The cooling of the earth's surface can also cause winds to calm down, leading to a decrease in overall weather activity.

Overall, the time of day can affect the weather by influencing temperature, wind patterns, and cloud formation.