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."
23 September 2014Ginge primed for Perth bow
Grandeur seeks Goodwood glory
Gosden retains belief in Taghrooda
Gosden duo given Cambridgeshire nod
Gosden enjoying 'ding-dong' battle
Rizeena considered for QEII
Kingman retirement a tough call
Limato takes aim at Redcar prize
McEvoy parts company with Godolphin
Murtagh duo confirmed for Melbourne
Long live the King
Doyle praise for 'special' Kingman
Hot Appleby dictates Kempton card
Scott ponders Melodic gameplan
Tiggy tops Cheveley contenders
Basateen blow for Hannon
Educate tops Cambridgeshire weights
Main Man in Royal Lodge frame
Mirza aiming for Abbaye joy
Muthmir run hinges on ground
22 September 2014Time called on Kingman career
Magical Kingman retired to stud
McCoy footage to be sent to police
Cee Bee sets sail for Tipperary
Hannon waits on Kingman news
Fad sights set on Rockfel
Minalisa team mull autumn options
Classic hopes for Halford pair
Marnane pair take a break
Eagle the highlight for Smullen
X-Factor makes it Peckham first
Cooper edging closer to return
River 'possible' for Royal Lodge
Nash eyeing Aintree bid for Busy
Ajjaadd team seek autumn aim
Fitz fine following comeback run
Dark team to mull options
Glory in Abbaye frame
Ascot on Silk radar
21 September 2014Brooch adorns Smullen century
Together takes Gowran spoils
Chrome beaten in Parx return
Fab Fitz back in business
Ayr raid heaven sent for Doyle
Improving Angel lifts Trophy
Hunter hits the target at Ayr
Pilot flies to Newbury glory
Close gets Silver call
Toocool too good in Mill Reef
Dark lights up in Clyde
Hill stars at Newbury
20 September 2014King Louis strikes Ayr gold
Yeenaan takes control
Wannabe Yours heads Joel list
Providence supplemented for Rockfel
That could tackle fences this year
Bell saddened by Wigmore article
Limato out of Mill Reef
Horse welfare 'priority' - BHA
Four-timer for magical McCoy
Accipiter comes good for Wall
Hawk leads treble swoop for Hughes
Bamford wants a Gold Watch
Ainippe samples joy of six at Ayr
Goldie pair on Gold run
Angel of the north heads to Newbury
Candy issues Limato Reef advisory
Glorious bids to protect Legacy