Illinois

Central Illinois braces for severe storms and oppressive heat

Published

2 hours ago

June 8, 2026

Press Room

By WMBD TV

PEORIA, Ill. (WMBD) — After a very dry start to June, a stormy and humid weather pattern takes hold for the next several days.

Key Takeaways

Flood Watch through Monday Evening
- Localized pockets of 2 to 3+ inches of rain may lead to flooding
- Rain totals will vary widely from one spot to another
Oppressive heat and humidity midweek
- Heat index near 100 degrees Tuesday through Thursday
Severe Storm Chances
- Highest risk Thursday, some severe weather potential Wednesday evening

The highest rain coverage for Monday will occur during the afternoon. Some funnel clouds may develop, but the risk of a tornado remains low. The main concern will be pockets of very heavy rain that can quickly lead to flash flooding where they develop. The showers will decrease and gradually end overnight.

With lower storm coverage during the daytime Tuesday and Wednesday, we will crank up the heat! While actual highs will “only” be in the upper 80s to lower 90s, the air will be very humid. This will push heat index values toward the triple digits. If possible, limit any strenuous outdoor activities to the early part of the day. The oppressive humidity will stay in place through Thursday.

The best chance for severe storms will come our way mid to late week, with all severe hazards on the table. While the highest severe threat is to our north and west Wednesday, severe weather could work in during the evening. The highest chance will be west of the Illinois River.

Thursday brings the highest threat for severe storms areawide. Timing of the greatest potential looks to be from mid-afternoon onward through the evening.