Hi
I don't understand exactly what you want, but let's see if i can help.
If you want to display the Weather GK1 module in one article, you need to add {loadposition moduleposition}. Notice, that not the module name, but the module position were is published.
It's recommended that you add more positions on templateDetails.xml file on your template directory.
Here's an example:
Open templateDetails.xml file, add <position>weatherposition</position> and save.
Them, go to Modules Manager and set GK Weather GK1 module on weatherposition, published and set menu assignment it to all.
Them go to your article and add {loadposition weatherposition}
If you need to add more module, do the same process with a different name module position and also, giving a different module unique ID.
If some how, you are trying to load the same module position with same weather module twice, it will gives you error.
Cheers