1 heat, as filed by the National Weather Service.
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.
1 heat. Local standard time, as filed.
A mild heat wave resulted in 4 deaths in Cook County. High temperatures were around 90 with the maximum heat index around 95 to 100 for about a week.
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 | 1999-06-10 | 35 | Male | Permanent Home | Direct |
| Heat, Cook | 1999-06-11 | 53 | Male | Permanent Home | Direct |
| Heat, Cook | 1999-06-16 | 29 | Female | Permanent Home | Direct |
| Heat, Cook | 1999-06-06 | 48 | Male | Permanent Home | Direct |
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 1999Every state in 1999This day in weather historyWarnings in Illinois, June 1999
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: 5708329.