The weatherpart is documented - if you are using the openbox version - there is a subfolder of .config/conky named accu_weather which contains a README.md describing the logic behind.
Or you could look at the linked Openbox topic which contains more details on the weather script.
Erm, no, not really! In fact, I tried to get Conky up-and-running on my KDE system (sorry, I forgot to tell you this) without success for the moment!
Yes, I see the good Openbox Topic and I understand: I must placed the original code by a other code for obtain a new conky, that is?!
On KDE, I created a file called .config and inside, I placed a text file with the script written by Meowclown but I’m not a conky user for the moment (maybe is impossible to placed a Conky in KDE, I not know).