Is there a way to set how the date format shows?

Hey,

As a European, it is very annoying to see the dates in the following US format:

Is there a way to adjust the default date format as it appears to me? For example I’d like to have 

2016-05-07

instead of

7/5/2016.

I have tried to change the languages and things, but that doesn’t help much because I don’t want my IFS in another language, just the date format to change.