Warwick will hold a precautionary inspection at 7am on Thursday for their meeting in the afternoon.
The track were able to race as planned on Wednesday after passing a similar check but with the forecast suggesting temperatures could reach -3C overnight, they will look again.
Southwell are also monitoring conditions ahead of their all-weather fixture. Heavy snow forced them to abandon Tuesday's meeting and they warned on Wednesday morning that were some ice particles present in the surface.
A precautionary inspection is possible with another sharp overnight frost forecast.
Wednesday's card at Hexham was the latest victim of the current cold snap.
More from Sporting Life
Safer gambling
We are committed in our support of safer gambling. Recommended bets are advised to over-18s and we strongly encourage readers to wager only what they can afford to lose.
If you are concerned about your gambling, please call the National Gambling Helpline / GamCare on 0808 8020 133.
Further support and information can be found at begambleaware.org and gamblingtherapy.org.
