National Weather Service United States Department of Commerce

{Jan 18 3:24 AM} Lingering light snow showers will end this morning, but the next round of light snow will arrive this afternoon and continue into tonight. Most locations will see up to 1.5 inches of snow, although higher amounts are expected across the far north due to lake effect snow showers. The powdery snow will make roads "greasy" and slick as the afternoon progresses.
[1/18/26] 335AM After a widespread light powdery snow falls on Sunday into Sunday evening, expect the hazard to abruptly switch from snow to reduced visibilities and bitter cold wind chills as northwest winds increase with the arrival of arctic air. Winds will gust 30-45 mph late Sunday night into Monday. The strong winds along with fresh powdery snow will lead to blowing and drifting snow with sharply reduced visibilities, including the potential for near whiteout conditions on the Bay of Green Bay and Lake Winnebago. A Winter Weather Advisory is in effect for Door and Vilas counties due to the snow or blowing snow and poor visibilities. The strong winds and bitter cold air will result in wind chills dropping to dangerous levels of 20 to 30 below zero Monday morning, and again on Tuesday morning.
Bitter cold wind chill arrive later tonight and continue through Tuesday. A Cold Weather Advisory is in effect from 3 AM to Noon for all of northeast WI, except Door County. Additional cold weather headlines will likely be needed Monday night into Tuesday morning.