What's the difference between cloudy days and cloudy days?

There are four differences between cloudy days and cloudy days:

1. Concept: Cloudy is a meteorological term. In the weather forecast, it refers to a kind of weather that can be called "between sunny and cloudy". Cloudy day refers to the weather state with a lot of clouds and no blue sky, which is between cloudy and rainy and snowy weather.

2. Cloudiness: Meteorologically, the coverage of clouds in cloudy sky accounts for 4/10 to 8% of the sky, while the total cloudiness of low clouds in cloudy sky is 8/ 10 and above.

3. Sunshine intensity: There is not enough sunshine on cloudy days, but sunny days can still be seen through the cracks in the clouds. On cloudy days, little or no sunlight passes through the clouds.

4. Rainfall: Cloudy weather can't form rainfall, but cloudy days can form precipitation.