The National Weather Service Milwaukee/Sullivan Weather Forecast Office indicates that the current Cold Weather Advisory will escalate to an Extreme Cold Warning from Midnight tonight until Noon on Tuesday. Wind chills of 30 below to 35 below zero F (-34 to -37 C) are expected tonight. Per below, frostbite can occur in 15-25 minutes with this level of wind chill.

“Wind chill temperatures will slightly moderate Tuesday afternoon into Wednesday morning and may or may not require a Cold Weather Advisory for that time. However, wind chills will still range from 10 below to 20 below zero,” NWS stated.