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."
17 January 2017Second Thought continues on the up at Kempton
Classy Starchitect up and running over fences at Ayr
Politologue stars in novice entry at Haydock
Contrasting views on Kempton closure from prominent Newmarket figures
Sir Anthony McCoy weighing in heavier since retirement due to chocolate cravings
Cyrus Darius primed for eagerly-awaited weekend return at Haydock
Heartbreak City on course for big handicap date at Leopardstown
Decorated Knight delights Roger Charlton in Kempton spin
Australian jockey Josh Cartwright set to learn fate after riding drama
Richard Fahey anticipating northern support for returning Paul Hanagan
Sire De Grugy skips Clarence House outing at Ascot
Michael Buckley enthused by Brain Power's Ascot performance
Yanworth to tackle Contenders heat with Cheltenham in his sights
Charlemar set to step up in trip following Tolworth disappointment
Petit Mouchoir to face Champion test at Leopardstown
Un De Sceaux team pinpoint Ascot nous as key strength in Clarence House Chase
Bastien blazes a trail to pocket Plumpton prize for Alan King
Fit-again Noel Fehily back in action at Exeter
Godolphin dominate fast-track qualifier as Antiquarium roars at Wolverhampton
Harry Fry guarded against Cleeve complacency for Unowhatimeanharry
Colin Tizzard set to unleash Cheltenham Gold Cup hope Alary at Haydock
Harry Fry plans to chart direct Cheltenham Festival route with American
Gordon Elliott looking to Irish Gold Cup with Empire Of Dirt
Willie Mullins hoping Faugheen will make Irish Champion return
16 January 2017Jan Faltejsek ends British drought as Fairlee Grey strikes at Ayr
Tributes paid after death of Fakenham maestro Cool Roxy
No plans for Dougie Gittens to appeal against Kelso ban
Un De Sceaux spearheads Clarence House octet at Ascot
Vezelay on course for Cheltenham Trial
Dunphy and Logan banned for two years following Like A Diamond case
Connections mulling Arkle outing for Identity Thief at Leopardstown
Gary Moore lining up Banks raid with Benatar
Amateur rider Dougie Gittins hit with 10-day ban at Kelso
Ballyoisin makes amends for recent fall
Champion trainer Paul Nicholls has his say on Kempton closure plans
Jack Kennedy shines as Ball D'Arc keeps up title momentum for Gordon Elliott
Barra banks maiden win at Fairyhouse
Grand National contender One For Arthur excites Peter Scudamore
Jonjo O'Neill on Leopardstown Gold trail with Minella Rocco
Neil Mulholland considers Cleeve Hurdle for Grand National hope The Young Master
Seamus Mullins could go Flat out with Fergall
15 January 2017My Manekineko set to take Leopardstown plunge
Ball D'Arc proves too good in Dan Moore Memorial at Fairyhouse
John Francome criticises Jockey Club proposals to close Kempton
'Sore' Noel Fehily ruled out of Fairyhouse action
Kelso receives go-ahead
Noel Fehily 'sore' but clear of injury after Warwick spill
One For Arthur powers to Classic Chase glory at Warwick
Willoughby Court impresses for Grade Two honours at Warwick
Tobefair continues winning spree at Warwick
Modus makes no mistake in Lanzarote Hurdle at Kempton
American stars in Hampton Novices' Chase at Warwick
Any Second Now floors hotpot Crack Mome at Punchestown
Frost and snow puts paid to Fakenham Sunday card
Fine Rightly looking to show his class at Kelso
Murphy sets sights on Moore glory with Pairofbrowneyes
14 January 2017Willoughby Court impresses for Grade Two honours at Warwick
Magic show delights Richard Phillips at Warwick
BHA chief Nick Rust hails news of Levy reform
Kelso call Sunday morning check
Pobbles Bay looking to take next step up the ladder at Warwick
Wetherby gets the go-ahead
Government announces Levy reform boost for racing
Nicky Henderson reveals setback for Supreme Novices' contender Jenkins
Alan King 'very happy' with Uxizandre as racecourse return nears
Divin Bere shines in Nicky Henderson hat-trick at Huntingdon
Peregrine Run all set for Warwick raid with Cheltenham in mind
Crack performer Mome puts Supreme credentials on the line at Punchestown
Valseur Lido set to miss rest of the season after meeting with injury setback
Jaleo team hoping he can shine in Lanzarote heat
Shotgun Paddy aiming to hit Classic target at Warwick