? What are the simple ways to understand the weather forecast?

Any webpage on the computer has a weather forecast, and so does the QQ chat window.

Customized weather forecast by mobile phone can also be two yuan a month.

The simplest and most convenient thing is:

Look at the clouds and know the weather. I learned it in the junior high school text.

Observe the stars and the moon.

If there are no stars and the moon tonight, it will be cloudy or rainy tomorrow.