How to translate Weather conditions?

Is there any way to translate weather conditions to spanish, like cloudy=Nublado

Yes.
Use conditions with #WCCI# tag.

sorry kinda noob can you be more specific or paste an example?

Read “conditions” section of Facer Documentation: http://docs.facer.io/

This topic gone help too: [Tutorial] How To Use #WCCI# and #WCCT#