Weather
Green Bay Weather: Lows in 30s Could Bring Frost
Green Bay, WI – Patchy frost could develop across parts of northern Wisconsin overnight as skies clear and temperatures fall into the middle 30s.
By Wesley Grant · 2026-10-01T21:50:01.596Z
Green Bay, WI – Patchy frost could develop across parts of northern Wisconsin overnight as skies clear and temperatures fall into the middle 30s.
According to the National Weather Service in Green Bay, clouds will decrease Thursday evening, Oct. 1, with mostly clear skies expected overnight. Forecast lows across its area range from about 35 to 44 degrees.
The coldest conditions are expected across northern Wisconsin. Temperatures reaching the middle 30s could allow patchy frost to form in low lying and protected locations across the Northwoods.
The weather service did not indicate widespread freezing temperatures in its Thursday afternoon update. The frost potential is described as patchy and dependent on temperatures and local conditions.
Friday is forecast to remain dry and cooler, with afternoon highs ranging from 57 to 64 degrees.
Temperatures could dip even lower in some locations early Saturday, with forecast lows ranging from 33 to 40 degrees. Conditions then begin to change as the next chance for precipitation approaches.
The NWS gives northern Wisconsin a 30% to 50% chance of showers Saturday evening. Saturday afternoon highs are forecast from 60 to 66 degrees.
Dry and seasonable weather returns Sunday, with morning lows of 43 to 48 degrees and afternoon temperatures reaching 59 to 67.
For Thursday night, residents in colder parts of northern Wisconsin should expect temperatures to fall through the 30s, with patchy frost possible before a dry and cool Friday.