What's the weather for a while, and what's it for a while

Sometimes sunny, sometimes cloudy, sometimes rainy, sometimes foggy.

When the weather system changes, such as high-pressure and low-pressure systems, the intersection of warm current and cold current will lead to weather changes. In addition, the terrain will also affect the weather changes, such as mountains, rivers, lakes and so on. Therefore, it is normal for the weather to clear up for a while.

When the water vapor content in the atmosphere is high, clouds and raindrops will form. If the temperature is low, water vapor will condense into water droplets. These water droplets float in the air, and when the sun shines, they will spread out, making the sky look gray. So the weather is rainy and foggy, which is also caused by the changing meteorological conditions.