How do I change the language in my Google Weather app I'm in Hong Kong. All my phone is successfully showing English with the exception of my Google Weather app, which has decided I need to see my weather in Chinese.

My old phone, a Nexus 5x was able to show me in English, but my new phone, a Pixel XL isn't obliging. What can I do to change it.
Just go to the app info of your Google app and in manage space clear your data and cache. It will not causeharm to your personal data .