Wisconsin wakes up locked in deep winter, with breath freezing instantly in the air and wind scraping across frozen pavement. Streetlights glow against a hard, dry cold in Green Bay, where temperatures hover near 6°F before sunrise.
This morning’s Winter Weather setup brings dangerous cold for anyone heading out early. Wind chills dip well below zero at times, especially in open areas and along highways like I-43 and Route 41. Dress in layers and limit exposure if possible. Vehicles may struggle to start, and frost forms quickly on untreated surfaces.
Conditions remain mostly quiet through Wednesday. Sunshine helps slightly, but temperatures stay locked in the 30s at best. Snow is not expected during the day, though clouds increase late Wednesday night. Roads remain dry, but shaded areas stay icy.
Attention shifts to Thursday, when a developing system approaches northeastern Wisconsin. Rain becomes likely during the day as temperatures briefly climb toward the upper 30s. Wet pavement spreads quickly during the afternoon commute. As colder air moves back in, meteorologists are tracking a possible rain-to-snow changeover late Thursday into Thursday night.
Accumulations look light for now, but timing matters. Even a brief burst of snow combined with falling temperatures could trigger flash freezing, creating slick conditions on bridges, ramps, and parking lots. Winds increase behind the system, adding a bitter edge as temperatures fall into the single digits Thursday night.
Friday stays cold with partial sunshine and highs near 20°F. Any leftover moisture may refreeze before sunrise, increasing black ice risk. The weekend remains seasonably cold, with occasional snow chances returning Friday night into Saturday.
This pattern signals a firm winter grip as December travel ramps up across Wisconsin. Plan ahead and stay weather-aware.
5-Day Outlook for Green Bay
- Wednesday: Mostly sunny, high near 34
- Thursday: Rain, then rain/snow possible, high near 39
- Friday: Partly sunny, high near 20
- Saturday: Mostly cloudy, snow chance, high near 30
- Sunday: Mostly sunny, high near 21
