Thursday's jumps meeting at Market Rasen is subject to a precautionary inspection at 8am, joining Wincanton and Leicester in needing checks before racing.
Officials have called an early check in light of a forecast for light frost at the Lincolnshire venue, with the going good to soft, soft in places.
Raceday clerk of the course Robert Bellamy said: "The forecast is for a minus 2C frost, but a possible wind chill of minus 7C, the east side of the country is particularly cold.
"We are perfectly raceable, it's not like we've had frost after frost, but we wanted to be prudent and warn people in case the forecast is wrong when one isn't so bad and another is horrendous."
Thursday's meeting at Wincanton must also pass an 8am precautionary inspection, with overnight temperatures set to drop to minus 2C or possibly even lower.
Clerk of the course Barry Johnson said: "I'm very confident we'll be fine - we'll be OK with minus 2C - but some forecasts are predicting minus 4C. There's no frost in the ground now, but the ground is quite wet. It's very much a precautionary inspection."
Leicester also have an issue with frost, as temperatures set to drop to as low as minus 5C.
A maximum daytime temperature of 2C on Thursday has also been forecast.
Clerk of the course Jimmy Stevenson said on Wednesday morning: "There's no frost whatsoever this morning - we are perfectly raceable - but there is quite a severe frost forecast tonight.
"If we think we have a chance at 8am, we'll probably call another inspection later in the morning and then, possibly, look again. We've got to be patient."
13 May 2013
Fabre confirms Ocovango for EpsomAspect on route to big things
Room at the top for Cityscape
Freedom steps into chasing ranks
Lucky thirteen in line for Lockinge
Galway beckons for Swinton hero
Sajjhaa set for late return
Cadeaux thriving in Singapore
Pink primed for Duke Of York
Liber takes aim at Musidora
Battle won for O'Brien
Pretending the real deal
Duntle back to winning ways
Classic glory for Flotilla
Style wins the day in Paris
Highclere double-handed for Dante
Cornerstone plans up in the air
Beckett planning Gesture workout
12 May 2013
No hurry for Jammy plansGuest in hunt for more Ascot glory
Vow set for Goodwood return
Gold-en boy Anodin in Classic hunt
Buick aiming for French strike
Angel flies home to land Chartwell
Barizan bounces back in style
Queally lights up Ascot meeting
Ektihaam storms to Buckhounds win
Nevis takes depleted Trial contest
Hard-fought battle won at Haydock
Secret impresses in Oaks Trial
Ascot drama for Fanning
11 May 2013
Felix foot-perfect on fencing debutCavalryman leads Cup charge
Ramsa ready to stand Trial
Duntle out to dazzle in Amethyst
Swift return doesn't bother Moran
Garman gives Bolger hope
Henderson: Ground vital for Voice
McMahon sweet on Tart Ascot claims
Murphy to move to France
Athos flies to Ormonde glory
Dee day for impressive Magician
Kingdom confirmed for Queen Anne
Secret's out for Lingfield glory
Lambe expects good run from Hall
Marengo ready to do battle
Greatwood on trial at Lingfield
Barizan sneaks into Swinton
Jamesie gunning for Vic-tory
10 May 2013
Telescope focus is on DanteBlinkers considered for Guarantee#
Bonfire camp bemoan Huxley flop
Moohaajim has six appeal
Ascot welcomes a couple of Guests


