It absolutely does not get cold in Dallas.
Cold is cold is cold. It is cold there now. 26 degrees is cold.
I went to middle school in Romeoville, Illinois. I went to high school in Lubbock, TX. They were both cold during the winter.
Might not be as cold as other places but you aren't walking around Dallas right now without being bundled up.
Edit: Oh you're from NY. One of those "it only gets cold in the north" guys. Right. You walk in Lubbock when it's 20 degrees but feels like 0 because of 40 mile per hour northern winds.
It's like me saying it never gets hot in NY.