The difference between cloudy to sunny and sunny to cloudy.

The difference between cloudy to sunny and sunny to cloudy: the weather is different.

Cloudy to sunny means that the forecast period first appears cloudy, and then gradually turns sunny, with emphasis on the process of weather change, that is, the weather will change.

The change from sunny to cloudy means that it will appear sunny first and then turn cloudy gradually during the forecast period, with emphasis on the process of weather change, that is to say, the weather will change.

Extended data

Why it rains: Rain is water drops falling from the clouds. Water on land and sea surface evaporates into water vapor. When water vapor rises to a certain height, it becomes small water droplets when it is cold. These small water droplets form clouds. They collide with each other in the cloud and merge into large water droplets. When it is too big for the air, it will fall from the clouds and form rain.

The cause of snow: there are two conditions for snow to form snowfall: one condition is water vapor saturation. The maximum amount of water vapor that air can hold at a certain temperature is called saturated water vapor. The temperature at which air reaches saturation is called dew point. When saturated air is cooled to a temperature below the dew point, the excess water vapor in the air becomes water droplets or ice crystals. Another condition is that there must be condensation nuclei in the air.

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