National Weather Service United States Department of Commerce

Several rounds of impactful weather will be possible throughout the week, with the first of those arriving Tuesday evening. The nature of this pattern makes it difficult to discern how storm complexes will behave, although periods of heavy rain, and in stronger storms, damaging winds and large hail, will be the main concerns. It is worth noting that not all locations are expected to see rain/storm activity each day.
Heat and humidity make a comeback Wednesday afternoon, with heat indices expected to reach or exceed 100 degrees in the southern Fox Valley. Be sure to take the forecast into consideration and take the necessary precautions if making any outdoor plans!
Make sure you're prepared for excessive heat this week!