The Berkshire track is due to host to a high-class two-day fixture, with two Grade Two prizes up for grabs on Friday in the Porsche Kennel Gate Novices' Hurdle and the Howden Noel Novices' Chase.
However, with temperatures still well below freezing on Wednesday morning and little prospect of significant improvement, Stickels is not optimistic.
He said: "At the moment we're minus 2.5C. It often dips lower at this time of day and this is as cold as it has got overnight. It's a fraction colder than we were forecast and we're still frozen in places.
"I don't think the temperatures we're forecast are sufficient really. We're going to require higher temperatures than are forecast for racing to go ahead.
"We've got frozen areas under the covers and frozen areas in other places and we've still got a dusting of snow on the track.
"I think Friday is highly unlikely."
Saturday's feature event is the Grade One Howden Long Walk Hurdle, but Stickels is not looking beyond Friday's card at this stage.
He added: "We'll consider what we're going to do about Saturday in due course.
"Friday night has never been forecast to be as cold, however I don't know whether that is now changing.
"I'm concentrating on Friday at the minute and not Saturday."
Officials at Haydock have already called an inspection for 8am ahead of their Saturday fixture, with prospects appearing bleak, while the meeting at Naas on Thursday is subject to a precautionary inspection at midday on Wednesday.
Even Lingfield's all-weather meeting on Wednesday was subject to a 7.30am precautionary inspection, but has been given the go ahead.