Overview
- Widespread heat is in place this weekend with highs near the low 90s and heat‑index values around 100°F, prompting local heat advisories in some areas.
- A frontal passage will make Saturday noticeably drier and less humid before heat and higher humidity return in many inland spots on Sunday.
- Models and regional teams show storm chances growing Sunday evening with isolated strong storms possible that could bring damaging wind, hail, and heavy downpours.
- Forecasters expect a slow front tapping Gulf moisture — including a broad circulation noted by the National Hurricane Center — to raise the chance of widespread heavy rain Monday–Tuesday with 2–4 inches likely and locally higher totals that could cause street and flash flooding.
- The Storm Prediction Center has a Marginal severe risk for parts of Wisconsin, multiple local forecast teams have labeled early next week as 'Impact Days', and short‑range model uncertainty means residents should monitor local NWS/SPC products for watches and warnings.