what is "cold is the night"??

is"the night is cold" a right sentence correct?? Yes, this is how you would say and write it.

I heard a song that says "cold is the night" This is a poetic way of saying it, something you would only hear in a poem or song, but you would not typically hear or read this. Sometimes the word order gets a little creative in songs to create the right rythm. 

Hope that helps! :) 

What is "cold is the night"??

Is "the night is cold" a correct sentence?
I heard a song that said, "cold is the night."

Songs and poems are very different from conversational speech, especially when the music is very deep and has a lot of meaning.

With that being said, "cold is the night" is proper and has the same meaning as "the night is cold". The subject of the sentence is indicated to be the night due to the presence of "the" in front of it.

Another example is "One is the loneliest number." This is exactly the same as "The loneliest number is one." By the way, that is also a song. :)