OPPO mobile phone has no weather option by pressing the plug-in.

ColorOS 12 and above systems: press and hold the blank space on the desktop (or close it with two fingers), click the "+"in the upper left corner to find weather plug-in (a three-party weather software plug-in or clock plug-in with weather) and add it to the desktop.

ColorOS version 3- 1 1.3 system: long press the blank of the desktop (or pull two fingers in the blank), click the plug-in/card, and you can find weather plug-in (a three-party weather software plug-in or a clock plug-in with weather) and add it to the desktop.