Green Bay, Wisconsin – Temperatures will drop fast across Wisconsin overnight, with readings falling to 15°F by early Monday morning, creating a risk of icy patches on untreated roads and bridges before sunrise.
According to the National Weather Service in Green Bay, skies will clear across most of the state by late evening, allowing heat to escape quickly. Only far north-central Wisconsin will hold onto clouds through the overnight hours, but no precipitation is expected before Tuesday night.
The immediate concern centers on early Monday travel. In Brown, Outagamie, and Door counties, road surfaces that thawed Sunday afternoon may refreeze by 5 a.m., especially on elevated roadways like I-43 bridges and rural highways. The Wisconsin Department of Transportation has not issued closures, but drivers should expect isolated slick spots during the morning commute.
Conditions improve quickly Monday, with sunshine pushing highs into the upper 30s to mid-40s statewide. By Tuesday night, a weak system introduces a 20% chance of a rain-snow mix, mainly north of Highway 29, including Rhinelander and Iron Mountain areas.
Dry weather dominates the broader pattern, and precipitation coverage remains limited. Still, another update is expected by Tuesday afternoon as that system approaches, with any changes likely to affect northern Wisconsin first.
