Heat in Illinois, June 24 to 28, 1998

Name: Heat in Illinois, June 24 to 28, 1998
Start: 1998-06-24T09:00
End: 1998-06-28T23:00
Location: Illinois

June 24 to 28, 1998 · NWS LOT · 1 event in 1 county or zone

1 heat, as filed by the National Weather Service.

The toll

Deaths: 10
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 1

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

Event by event

1 heat. Local standard time, as filed.

Heat, Cook

When: June 24, 9:00 AM CST to June 28, 11:00 PM CST
Where: Cook forecast zone
Deaths: 10 direct, 0 indirect
Reported by: GOVT OFFICIAL

Daytime temperatures were in the lower to middle 90s with dewpoints in the 70s on the 24th and 25th, producing heat indices of 102 to 107. Thunderstorms brought some relief from the heat on the 26th, though humidity was still high. The heat reurned on the 27th with a peak heat index of 107. The 28th was a little cooler with the heat index in the middle to upper 90s. Ten heat-related deaths were reported in Cook County as a result of the heat. The deaths occurred from the 26th to the 29th. Two more deaths occurred in early July as a result of this heat wave. (see July Storm Data for northeast Illinois)

The people who died

As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.

Event	Date	Age	Sex	Where	Kind
Heat, Cook	1998-06-26	74	Female	Permanent Home	Direct
Heat, Cook	1998-06-27	57	Male	Permanent Home	Direct
Heat, Cook	1998-06-27	56	Female	Permanent Home	Direct
Heat, Cook	1998-06-27	77	Male	Permanent Home	Direct
Heat, Cook	1998-06-27	39	Male	Business	Direct
Heat, Cook	1998-06-27	68	Female	Permanent Home	Direct
Heat, Cook	1998-06-28	87	Male	Permanent Home	Direct
Heat, Cook	1998-06-29	72	Female	Permanent Home	Direct
Heat, Cook	1998-06-29	80	Female	Permanent Home	Direct
Heat, Cook	1998-06-26	93	Female	Permanent Home	Direct

What these are

Heat: Heat below excessive heat criteria that still caused deaths, injuries or significant impacts.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Illinois in 1998 Every state in 1998 This day in weather history Warnings in Illinois, June 1998

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5655706.