Thursday's meeting at Huntingdon is subject to a precautionary inspection at 8am on raceday morning.
Clerk of the course Emma Marley said: "Temperatures have risen to 6C this afternoon and the course is currently raceable. "We're going to have another look in the morning as we are forecast further sub-zero temperatures tonight. We could get anything between minus 1C and minus 3C. "It's due to be a cold day tomorrow, with temperatures rising to 4C, but as the course is raceable now, I'm optimistic."Thursday's meetings at Ayr and Huntingdon are subject to precautionary inspections.