It's going to be a cold one out there today—a don't-even-THINK-about-wearing-shorts-today-Bro kinda day—and Mayor de Blasio wants to make sure New Yorkers approach this freezing weather with the appropriate amount of terror.

“These temperatures can be life threatening—especially for seniors, infants and people with medical conditions," de Blasio said in a statement this morning. "We are urging residents to stay inside as much as possible, take care of yourselves and your neighbors, and wear multiple layers of warm clothing when outside. Most importantly, do not let your children play outside unsupervised and for long periods of time."

A National Weather Service (NWS) Wind Chill Advisory goes into effect as of 1 p.m. today through noon on Sunday. According to the NWS, wind chills will drop throughout the day and approach 25 degrees below zero during the overnight hours. Temperatures on Sunday will continue to be in the low-to-mid teens with similar wind chills values. Temperatures are not forecast to reach above freezing until late afternoon on Monday. There is also potential for a few isolated snow showers today, but no accumulations are expected.

“If you are going out for church or synagogue services, Valentine’s Day, or for other reasons this weekend, make sure to bundle up," added NYC Emergency Management Commissioner Joseph Esposito. "And if it’s too cold for you, it’s probably too cold for your pet too, so keep your animals inside this weekend." De Blasio, a Red Sox fan, also inadvertently poured some salt on the wound:

So be careful out there today, and most of all, watch out for any wolves.