3 Things To Know:
- A line of showers with a chance of a thunderstorm is late tonight, but overall impacts should be minimal.
- Heavy rain and severe weather are possible from late Monday into Tuesday, though the specifics are still being evaluated.
- Cooler temperatures and more storm chances may follow as we head into late next week.
Tonight’s Weather: Showers Rolling In
Western Wisconsin can expect a narrow line of showers and possibly a few thunderstorms late tonight. The window for these storms will be brief, typically lasting only 1-2 hours as they move towards central Wisconsin. According to the National Weather Service,
“MUCAPE values of 500-1000 J/kg would certainly support general thunderstorms.”
However, any organization of these storms could be limited. Most forecasts indicate that the convection should dissipate by sunrise.
Upcoming Days: Thunderstorm Risks Ahead
The next significant weather event appears to be from late Monday into Tuesday as an extratropical cyclone tracks through the region. This system could bring a cold front that enhances moisture levels significantly, with PWATs nearing 2 inches. This setup could lead to efficient rainfall, although exact locations and timing will depend on the front’s position and the evolution of any convection.
Confidence is still building regarding the potential for severe weather. The outcomes depend heavily on how Monday morning unfolds, but expect evolving conditions throughout the weekend.
Beyond Early Next Week: Cooler and Potentially Stormy
Looking ahead, cooler temperatures are expected later in the week. There may also be chances for renewed storms as a wave from the Pacific Northwest could influence our weather, although current guidance suggests this scenario has a lower probability. The chance for storms or persistent rainfall is around 20-30% as conditions continue to develop.
For updated forecasts where you live check out our Forecasts Page.
Source: NWS ARX Area Forecast Discussion, issued 2026-09-11T18:44:00+00:00.
