Grayson admitted training had been disrupted this week due to the snow but paid tribute to his groundstaff at Elland Road and Thorp Arch.
He said: "At Elland Road we have the bonus of having undersoil heating and we have great staff and we know that unless there's a problem with the areas surrounding the stadium we will play, so the mindset is very much on Saturday and Crystal Palace.
"You have to play training a little bit by ear, in terms of how many you have to work with, but the groundstaff have been terrific, the pitches are covered and we will train as normal.
"We're lucky with the facilities we have here because there will be some clubs this week where the players don't actually see grass until they play on the Saturday.
"It's a credit to the staff at Elland Road and Thorp Arch that, by and large, we can work as normal and play games as normal."
Source: PA