The 37-year-old quarterback was supposed to have surgery on his left ankle the day after the season, but skipped it and had yet to reschedule.
"Yes, we're looking to have it done ... in the next couple of weeks," McCarthy said.
McCarthy, wearing a No. 17 Matt Kenseth hat, spoke from the garage area of the Daytona 500, where he was attending the NASCAR race with his daughter.
McCarthy led the Packers to an 8-8 finish in his first season as a head coach last year. Now, as next season awaits, he's "absolutely" certain Favre will be in place for minicamps.
"(Team doctor Pat) McKenzie and Brett, they've been through this whole process," he said. "We're going to be fine."
McCarthy, daughter Alexandra and two members of the team's administrative staff toured the garage and met with Kenseth, a Wisconsin native and rabid Packers fan. McCarthy said he appreciated the time with his daughter, who lives with her mother in Austin, Texas.
"This has been a really nice trip to get away for three days," the coach said.
This was the first NASCAR race for McCarthy, who saw a few similarities to football.
"There's so much strategic design in everything they do, and trying to push the envelope at every turn," McCarthy said. "That's the part that I'm fascinated with."
Still, McCarthy admits he's a racing rookie.
"I know the basics of it," McCarthy said. "I have a couple of nephews that are really into it. I've also learned a lot just being here this weekend."