METAIRIE, La. — The New Orleans Saints prepared rookie quarterback Spencer Rattler in an unusual way for Monday night’s game against the Green Bay Packers in Wisconsin, where temperatures of 30 degrees or lower and possible snow are expected at Lambeau Field.

Quarterbacks coach Andrew Janocko took Rattler and the rest of the Saints’ quarterbacks to the walk-in freezer in the team’s cafeteria on Saturday to go over the plays.

“This morning Janocko took us into the freezer in the cafeteria where it was about 10 degrees and we just worked through the entire script there and that helped us a lot,” Rattler said. “Hopefully it’s not 10 degrees, but we’re ready.”

Janocko joked that the idea came to him after watching “Cool Runnings.” In the film, a character sits in an ice cream truck to prepare for the conditions he will face as an Olympic bobsledder.

But Janocko also said he has plenty of ideas to prepare for the cold weather after coaching in the NFC North from 2015 to 2023.

“I think we said something about just preparing for (the cold) so you’re not shocked and it’s not a surprise,” he said. “It’s something you have to deal with when preparing for the opponent and the venue. So I just thought it would be good to do something different. This time of year it’s fun to do other things. This is it.” A long season and sometimes different than sitting in a meeting day after day, just doing something different and changing the scene. People in the cafeteria think I’m crazy.

Rattler will start his first game at Lambeau in place of the injured Derek Carr (hand), who sat out Saturday. Alvin Kamara (groin) was also ruled out. Both players missed training all week.

Rattler started the second half of last weekend’s 20-19 loss to the Washington Commanders after the Saints benched Jake Haener after one half.

This will be Rattler’s fourth start of the season. The rookie started three games earlier in the year when Carr was sidelined with an oblique strain.

Carr didn’t make enough progress in his rehab this week to return to practice, interim coach Darren Rizzi said. Earlier in the week, Rizzi also suggested it would be doubtful for Kamara to play after tests showed his groin injury was worse than initially expected.

“The last few days have definitely been encouraging,” Rizzi said. “(Carr) is starting to get some of the grip strength back and stuff like that. I just felt like when we talked to him and the medical staff that we were definitely getting closer, but where he’s at right now, I’ve just done it.” “I don’t feel like that he had enough time to get where he wanted to be. As it is now, I just feel better, but he’s improved.”

Receiver Chris Olave practiced on a limited basis this week after returning from a long stint on injured reserve following two concussions, but is not yet ready to play a game.

“He’s just been smiling the last few days and it’s just a great story,” Rizzi said. “… A guy who six or seven weeks ago didn’t really know where he was going to be, what was going to happen to him, his career. I just walked forward to see him come back, smiled, saw him running around, laughing with the guys in the locker room because there was a certain question… He moves like the Chris Olave that I know know, so that’s positive. “