There are ways of knowing about the weather. One important way is to study the clouds.
We can see different kinds of clouds and watch them for signs of changing weather. To forecast the weather, we should look for three things about clouds: movement, colour and change.
As a rule, the higher the clouds, the better the weather. And the lower the clouds, the worse the weather is going to be. When the thick clouds get bigger early in the day, it will rain. When a dark cloud appears, a storm is coming.
Colours in the sky tell us about the weather too. For example, a golden ring around the Moon also tells us that a storm is on the way.
The rainbow also has a message (信息). When the Sun is in the east and a rainbow is in the west, the rain may be coming its way. When the Sun is in the west and the rainbow is in the east, the rain will be moving away from us.