Green Bay drivers and residents can expect an unseasonably warm stretch of fall weather as September winds down, with highs reaching near 80 by Saturday before cooler air takes hold Sunday evening. Those planning weekend travel on U.S. Highway 41 should prepare for dry, sunny conditions but anticipate a noticeable drop in temperatures by early next week.
According to the National Weather Service in Green Bay, mostly sunny skies will dominate Friday with highs in the mid-70s. Saturday looks even warmer, climbing near 80 under full sunshine. Winds will stay light, creating ideal conditions for outdoor activities across northeast Wisconsin. By Sunday, however, a shift toward cooler air will bring highs in the upper 70s before nighttime lows dip back into the 50s.
This stretch of dry weather offers good news for construction and harvest operations across Brown, Outagamie, and Shawano counties. Still, residents should take advantage of the warmth while it lasts, as early October often signals the first frost potential across northern Wisconsin. For now, temperatures remain well above any frost threshold, but gardeners and farmers should prepare for changing conditions heading into next week.
The warm, sunny pattern is expected to hold steady through the weekend, giving way to more seasonable mid-70s by early next week. Meteorologists note the cooler trend could deepen further into the first week of October, hinting at Wisconsin’s first real taste of fall chill.
Warnings remain minimal, but officials advise checking back for updates if cooler Canadian air accelerates southward.
Five-Day Forecast for Green Bay, Wisconsin
- Friday: Mostly sunny, high near 74, calm winds.
- Saturday: Sunny, high near 80.
- Sunday: Sunny, high near 77, evening cooling trend.
- Monday: Mostly sunny, high near 77, low 57.
- Tuesday: Sunny, high near 77, seasonable fall warmth.
