Not at all. Given the forecasted temps, I'd be amazed if it's called off. I think it's a precaution, which is why it's as late as it is.
Well according to Steve Evans pre match, they haven't trained on it since Tuesday... https://barnsleyfc.org.uk/threads/steve-evans-actually.327575/
A big problem is if a part of the pitch is in shade. What little sun they get may defrost most parts. But not if in the shade the entire day from a particular stand. As has happened b4.
You'd think they'd cut all those trees down and whittle them into cutlery now steel works is shutting. Problem solved.