3 Things To Know:
- Thunderstorm chances will increase late tonight into Saturday morning, mainly in north-central Wisconsin.
- Heavy rain and storms are possible Monday into Tuesday, though severe weather threats remain low.
- Gusty south-southwest winds will create hazardous conditions at Lake Michigan, leading to high waves and dangerous swimming.
Tonight’s Weather Outlook
Dry conditions will persist into the early evening across Northeast Wisconsin, with a slight possibility of a stray shower near Vilas County. However, late tonight, expect the chances for showers and storms to rise—estimated between 40 to 70 percent for central and northern regions.
As a shortwave and cold front approach, any storms that develop may only produce brief gusty winds, as stronger instability is forecast to wane after midnight. Rainfall amounts are expected to be minimal, with most areas likely receiving less than a quarter inch. By the time any precipitation reaches eastern Wisconsin, it may be reduced to mere sprinkles.
Weekend Conditions
Once the front moves through, a weak high-pressure system will take hold, bringing mainly dry conditions throughout the weekend. A few clouds or very light showers might skim over the southern counties on Sunday, but overall, it will be a quieter period.
Thunderstorm Risk Next Week
The weather impacts will ramp up again as we head into Monday and Tuesday. Current models indicate a strong low-pressure system moving through the northern Plains, which will push significant moisture—potentially up to 2 inches—into our region. While the likelihood of severe weather seems low due to limited instability, the potential for heavy rain is notable.
The chance of receiving more than 2 inches of rain is around 30 to 45 percent, particularly across central Wisconsin. This period will need close monitoring for any signs of excessive rainfall and possible flooding. As stated in the NWS discussion, “Severe weather threat is low due to limited instability.”
Future Outlook
Beyond these immediate rain chances, uncertainty remains regarding the position of weather fronts for the rest of the week. Current forecasts suggest a mix of low-end precipitation probabilities, especially across the southern counties. Cooler air is expected to filter in behind the system by Tuesday, potentially leading to a crisp and refreshing mid-week.
Safety Advisory
Additionally, gusty winds at Lake Michigan are creating high waves, increasing the risk for swimmers. A Beach Hazards Statement is in effect through Saturday, reminding everyone to exercise caution near the water. Be particularly aware if you’re involved in small craft activities.
For updated forecasts where you live check out our Forecasts Page.
Source: NWS GRB Area Forecast Discussion, issued 2026-09-11T19:28:00+00:00.
