CFL Commissioner Mark Cohon says the time has come to look at the league schedule with an eye to an earlier start so as to avoid playing games in sub-zero weather.

This year's Grey Cup, the championship game, is being played in Regina where the temperature Wednesday hovered around -20 C throughout the day. There was also a windchill that made it feel even colder, around -30.

The forecast for the Sunday game, which will start at 5 p.m. CST - right around sunset in Regina - calls for warmer temperatures with a daytime high of -1 .

Cohon said Wednesday he hopes to get feedback from fans about the CFL schedule during an event Thursday.

"That's one of the questions we're going to be asking fans: can we move it up earlier in June?" Cohon told CBC News. "And it's something we're going to consider 'cause from a business perspective, we want our stadiums to be full and if it's -20, it's more difficult. So it's something we're going to contemplate."

The Hamilton Tiger-Cats held a practice Wednesday on Taylor Field at Mosaic Stadium, which was dusted with a light coat of snow. When not moving for their drills, the players were often huddled around portable heating machines.

The Saskatchewan Roughriders practised indoors Wednesday, but will return to the elements on Thursday.

The team purposefully avoided being outside, so that the chill in the weather would not dominate their practice.

Nevertheless, linebacker Craig Butler said the team is bracing for a cold Grey Cup game.

"You can't do anything about the weather," Butler said Wednesday. "You have to play in whatever you're playing in and that's that. The Hamilton Tiger-Cats are still going to be there if it's snowing and -15."