Catley: Edmonton heat may suit Matildas
A top of 32C is forecast for Edmonton on Saturday (Sunday AEST), when the Matildas take on the reigning world champions.
That may well suit Alen Stajcic's squad, which at an average age of 23.8 is four years younger than Japan.
Catley said the expected conditions had been spoken about, and could suit the Matildas.
"We have been talking about the heat a little bit," she said.
"We haven't really played in heat while we've been here but obviously at home in the W-League season we play pretty much in the middle of summer so we're used to the heat and the heat here is pretty similar to home rather than the heat in Asia.
"We do sort of see it as a bit of an advantage.
"But really when it comes down to it, it's just both teams running on adrenalin and whoever turns up on the day will probably win."
The Matildas know the challenge ahead of them, having lost last year's Asian Cup final to Japan 1-0.
Catley said Australia would have to make slight changes to their approach.
"They're definitely different from the teams that we've played against here, but we played against Japan a whole lot in the Asian Cup and even before that," she said.
"We know how they play and we know how to match up against them, we just have to sort of adjust our game plan a little bit and be really switched on.
"They're such smart players, really technical on the ball so we'll definitely be looking at them carefully but we know how they play so we'll be ready for that."
As for the support – and expectations – from Australia, Catley said it was being welcomed.
"I don't think it's daunting at all," she said.
"We thrive on the support from home and there's nothing better than knowing that your country is behind you.
"We've always known we've had a lot of support at home but to know there's even more now is just a bigger motivation for us to do well."