What should I do if the iPhone 8 does not have only weather?

You are asking what to do if the iPhone 8 does not come with built-in weather, right?

If the iPhone 8 does not come with weather, you can download a weather software.

Open the APPstore on your Apple phone and search for "Weather". The first developer is Apple. Click on the weather forecast software on the desktop of your mobile phone, and it will automatically update after entering it. If the software is added to the notification bar of the mobile phone, it will be updated automatically without clicking. As long as there is a network, it will be updated in real time. Generally, it is automatically updated once an hour by default.