Excessive Heat in Washington, Illinois

Excessive Heat August 20, 2023 – August 25, 2023 · Washington, Illinois

What the National Weather Service wrote

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. Heat index values climbed to 110 to 120 degrees each day as measured by numerous reporting sites across the region.

The wider storm

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. Although the temperature rarely threatened climatological records, the humidity caused the heat index to reach extreme levels. The combination of heat and humidity led to several heat related illnesses across the region.

Source: NOAA Storm Events Database, event 1143327. Narratives are written by the National Weather Service forecast office that issued the report.

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