Sky in English is basically the same. It originally meant something that obscures, upwards into the heavens. Presumably people were quite used to clouds. Looki

Sky in English is basically the same. It originally meant something that obscures, upwards into the heavens. Presumably people were quite used to clouds. Looking at the etymology of the word, one finds sky in Old Norse, skiwja in Proto-Germanic, similar in Old English and Old Saxon all the way to Proto-Indo-European skewH (to "cover, bedeck"). Look at wiktionary.org - hours of fun.