"Wasn't it cloudy?"
It is a shortened version of ~지요
~지요 = ㅈ + ㅣ + 요
~지요 = ~죠
숀은 미혼이지요? = 숀은 미혼이죠? = Is Sean single?
미혼 = single (adjective)
기혼 = married (adjective)
Shorted versions are often used in songs for example:
그댈 사랑해요 = 그대를 사랑해요 = I love you.
그댈 is a shortened version of 그대를
그대를 = 그댈 = 너를 = 당신을
그대 = 너 (polite, romantic & poetic version of you)
Short answer would be the equivalent of
"..., isn't it?"
sentences in English. And yes, contraction of 지요.