From June 25 to July 4, 2025, the Chicago and Milwaukee National Weather Services issued multiple forecasts and warnings regarding isolated to widely scattered thunderstorms affecting parts of Illinois, Indiana, and Wisconsin. These storms, expected primarily in the afternoons and evenings, have the potential to produce gusty or damaging winds, torrential rainfall, hail, and frequent lightning. Coverage of storms has been hit-or-miss, with many areas remaining dry despite the threat. Heat indices near 100 degrees were reported in Illinois away from the lakeshore, contributing to hot and humid conditions. On July 4, a line of storms moved southward from Wisconsin into northern Illinois and northwestern Indiana, prompting advisories for parade-goers to exercise caution. Morning thunderstorms in Wisconsin included wind gusts between 40-45 mph and brief heavy downpours. Forecasts indicated that storm chances would increase over the weekend, with Sunday having the highest likelihood of scattered storms. Throughout this period, residents were advised to seek shelter during thunderstorm activity due to the risks of lightning and severe weather.