Subzero wind chills have schools across southeastern Wisconsin taking extra precautions to make sure kids stay safe.
It's especially important when you can get frostbite in as little as 30 minutes.
Most students who go to Atwater Elementary in Shorewood usually walk to school, but on days like Monday, principal Kayla Russick said parents drive their children.
Crossing guards are on heightened alert because of the increased traffic and say moving around keeps them warm.
“I've got numerous layers on," said crossing guard Tim Kelly. "I'm from Wisconsin, so you learn to bundle up and put as many layers on as possible."
Russick said they check the forecast every day and if the temperature or wind chill falls below zero, they move recess inside and open the school early.
"When it's really, really cold like this, we have indoor recess, so we have arrangements for that already where the kids will go for that time," she said.