If you don’t want to build your own frame and want to minimise the effort in stripping your monitor back maybe my project can help provide some inspiration?
https://www.nonosesmiley.com/2018/06/magic-mirror-ikea-frame-hack.html has the details.

Here are a few photos

and what it looks like today

I’m going to assume you have an actual API key and that the one you posted here is just a dummy one… if not… then you need to get an API key from openweathermap.org