The city sees on average roughly 900 mm ( 35.4 in ) of precipitation annually .
It 's one of the sunniest Slovene cities , with an average of 266 sunny days throughout the course of the year .
The city sees on average roughly 900 mm ( 35.4 in ) of precipitation annually and it 's one of the sunniest Slovene cities , with an average of 266 sunny days throughout the course of the year .