China can now predict the weather within a few days

I am a meteorologist. Regarding the reference time limit of weather forecast, it generally depends on the weather situation. Generally speaking, the current 3-day forecast can be used as a reference.

Forecasts of more than 3 days, when the atmospheric situation is relatively stable in autumn and winter, the difference between the forecasts within a week or even 10 days and the actual situation will not be big, so you can refer to it. In spring and summer, when the intersection of warm and cold air flows is more frequent and the influencing factors are more complex, the forecast for the next day is sometimes not accurate enough.