Heat — Iowa, Wisconsin

2025-06-21 to 2025-06-23 · Iowa, Wisconsin

Event narrative

Maximum heat index values of 97-104 degrees Fahrenheit and minimums in the middle to upper 70s.

Wider weather episode

Persistent southwest winds pumped hot and humid air into southern WI for a 3 day period. Heat index values rose into the 100s during the day and only dropped into the 70s at night. Cooling centers were opened in urban areas.

Source: NOAA Storm Events Database, event_id 1259438. Narrative written by the NWS forecast office that issued the report.