Officials at Navan will hold a precautionary inspection at 8am ahead of their Sunday fixture due to the threat of overnight frost.
The course is currently raceable, with the ground described as soft to heavy, heavy in places.
The high-class card is due to feature two Grade Two events, the Tara Hurdle and the Irish Form Book 'Future Champions' INH Flat Race, as well as the Navan Novice Hurdle at Grade One level.
Officials at Carlisle will also stage an 8am inspection ahead of their scheduled Sunday fixture.
The Cumbrian track has been hit by freezing temperatures this week and with more of the same forecast for Saturday night, clerk of the course Andrew Tulloch has decided to call an official check.
Tulloch said: "It got down to minus 2C overnight and a bit of frost got into the ground, but it's not too bad at the moment. It could go either way really. The forecast is very similar for tonight, so we'll just have to see which way it goes.
"We've got fleece down on some areas of the track, so we'll keep our fingers crossed."