Heat in Grundy, Illinois

Heat July 24, 2025 · Grundy, Illinois

The wider storm

On July 23rd, high temperatures reached the lower 90s with peak heat index values generally in the 105 degree range for most areas, though a few areas peaked around 110 degrees. On July 24th, high temperatures reached the upper 80s and lower 90s with peak heat index values generally in the 100 degree range for most areas, though a few areas peaked around 105 degrees.

Source: NOAA Storm Events Database, event 1281427. Narratives are written by the National Weather Service forecast office that issued the report.

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