Wednesday's jumps meetings at Newcastle and Market Rasen have been abandoned due to snow.
The track is reported to be covered by two inches of snow with further snow possible today and a harsh frost expected tonight.
Elsewhere, officials at Market Rasen have been left with no option but to abandon Thursday's National Hunt fixture due to snow on the track.
Although the scheduled meeting is still 48 hours away, the course is completely covered by snow and there is no hope of sufficient improvement with temperatures set to remain well below freezing for the next two nights.
Michael Prosser, regional head of racing for the east for Jockey Club Racecourses, is overseeing matters and has called off the card following a noon inspection.
Prosser said: "We've got two inches of snow on the ground and the forecast tells us temperatures could get down to minus 4C or minus 5C tonight.
"It is due to be even colder tomorrow night, so I'm afraid there is no possibility of racing and we've had to abandon the meeting."
Meanwhile, this afternoon's meeting at Lingfield goes ahead after the track passed an 8.15am inspection.
Clerk of the course Neil Mackenzie Ross was concerned by the threat of waterlogging but after just four millimetres of rain overnight, the track is fit to race.
He said: "We are just lifting the frost covers now and we're happy enough.
"We're due a dry, bright day and the ground will be heavy. We will probably omit the second hurdle in the back straight and possibly the second to last chase fence, but otherwise everything is fine."