Why can the weather forecast know the weather a few days or even ten days in advance?

Because the weather forecast system is actually very complicated, and it is not simply based on observing the sky. It is calculated by ground observation station+meteorological satellite and logic system. For example, if you see the changes of clouds and humidity in this place through ground observation stations and satellites, you can predict what will happen through the logical system, and then there will be a forecast ~

Generally speaking, the accuracy of the weather forecast is quite high, just because people can't find the correct time, and they always remember that the wrong time 10 is 8 times right and 2 times wrong, which will also make people feel that the weather forecast is inaccurate.

To tell the truth, I have used almost all the weather software on the market. In fact, all the data come from the National Weather Service. Comparatively speaking, it depends on whose information is more comprehensive and updated more timely. Now I use the App Store to directly search for "weather forecast", and one of the top five is Minesage. Advertising is less than ink. If a city is set, it will be updated on time every day. If the city has an early warning or the weather changes suddenly, it will be notified as soon as possible.

And the interface is simple and leisurely, which looks more comfortable.

I hope to adopt it. I did it myself. It's not easy to get back to work.