Green Bay, WI – Drivers across northeast Wisconsin should be cautious tonight, as patchy fog is expected to develop in rural areas and along Lake Michigan. The fog may reduce visibility for late-night and early-morning travel but will clear by sunrise Monday, giving way to a stretch of quiet and warm weather to start the week, according to the National Weather Service (NWS) in Green Bay.
Warm, Sunny Start to the Week
Monday and Tuesday will feature mostly sunny skies with seasonably warm temperatures. Highs across inland areas are expected to climb into the lower 80s, while lakeshore communities will remain a few degrees cooler, holding in the 70s thanks to breezes off Lake Michigan. Overnight lows will stay comfortable in the upper 50s to lower 60s.
These early-week conditions will offer a favorable window for outdoor activities, agriculture work, and travel, with no significant hazards expected once the morning fog dissipates.
Midweek Weather Shift
By Wednesday afternoon, a change arrives as a system moves into the Upper Midwest. Forecasters place rain chances at 20 to 40 percent, with showers and thunderstorms spreading across northeast Wisconsin. Storms may persist into Wednesday night, and scattered activity could linger into Thursday.
While widespread severe weather is not anticipated, any thunderstorms that develop could produce brief downpours, lightning, and gusty winds. These hazards may cause minor disruptions for evening commuters, outdoor workers, or events scheduled midweek.
Preparing for the Transition
Residents are encouraged to enjoy the early-week sunshine while staying aware of the potential for unsettled weather later in the week. The NWS advises checking updated forecasts as Wednesday approaches and planning for possible delays, particularly during evening travel periods.
Outlook Beyond Thursday
Following the midweek system, conditions are expected to stabilize, with drier and seasonable weather likely returning by Friday. Highs should moderate in the mid to upper 70s, offering a more comfortable end to the workweek.
Overall, the forecast paints a picture of early fall transition: quiet warmth to start, followed by scattered storms midweek, and a return to calmer conditions to close out the week.
