Mir ist kalt.
Polish and German looks similar to me. You can use „jest” in Polish sentence, like „Zimno mi jest”.
Je mi zima. Мне холодно. :)
I'm guessing "Je mi zima" is Czech? I've never studied it but I looked into it a tiny tiny bit and they look like very similar languages.
Yes, it's Czech :)
However "I'm not cold" = nie jest mi zimno :) i think
Man salst - a very different construction in Latvian, literally - "to me freezes"