It just got a lot colder outside.

The National Weather Service issued a wind chill advisory from midnight to noon today as another round of cold weather hits the region. What’s more, cold temperatures are likely here to stay until the end of the month.

“Every five to seven days we get a little warm but then it comes right back,” said Tom Stangeland, NWS hydrometeorological technician.

Stangeland said the arctic air system that has cooled temperatures throughout the winter will be here to stay throughout the week.

Tuesday will bring a high of 1 below zero and wind chill values as low as 34 below, while Tuesday night temperatures could get as low as 3 below with a wind chill of minus 15.

Temperatures are expected to stay at single digits or below zero until Friday. The Mower County area could see temperatures as high as 20 on Saturday before the weather cools once again. By Monday, temperatures are expected back in the single digits.

“Once it passes, the cold air comes right back, right now, out through 10 days,” Stangeland said.

Though several areas in Minnesota have broken all-time cold records this winter, Stangeland said, the winter weather thus far is only a little colder than average and more reminiscent of winters in the 1970s.

“You get the cycles that occur every 10 to 20 years,” he said. “We’re reverting back to some of the colder temperatures.”

Area school districts delayed classes by two hours Tuesday as wind chill values were expected to hit 30 below zero. Austin, Grand Meadow, Lyle, LeRoy-Ostrander, and Southland Public Schools, as well as Hayfield Community Schools and Pacelli Catholic Schools, were all delayed two hours Tuesday.