Chicago, Illinois – Severe thunderstorms are set to slam into Chicago and the I-290 corridor on Wednesday, July 30th, putting commuters and beachgoers on high alert. A summer weather alert has been issued for the region, with damaging winds up to 60 mph, the threat of flash flooding, and dangerous swimming conditions expected to disrupt daily routines.
According to the National Weather Service in Romeoville, a complex of strong thunderstorms will sweep through Chicago and surrounding counties after 7 a.m. Wednesday. Torrential downpours may cause rapid flooding on key roadways, including I-290, I-55, and surface streets across Cook and DuPage counties. High winds and lightning will be hazardous for anyone outside or traveling during the morning and midday hours. Residents are urged to avoid flooded intersections, never drive through high water, and keep cell phones charged in case of power outages.
Along the Lake Michigan shoreline, dangerous waves and rip currents are expected from Wednesday through Thursday, prompting a high swim risk and possible beach closures. Lifeguards warn swimmers to stay out of the water until conditions improve.
Periods of showers and storms could linger through Thursday morning before a break in the action. By Friday, August 1st, sunny skies and milder temperatures return—offering a brief respite heading into the weekend.
The next round of storms could arrive by Sunday, August 3rd, so keep an eye on local updates. Warnings remain in effect until Thursday.
Five-Day Detailed Forecast: Chicago, IL
Wednesday, July 30:
- Strong thunderstorms likely after 7 a.m., high 77°F. Damaging wind, torrential rain, and local flooding risk. High swim risk on Lake Michigan.
Thursday, July 31:
- Showers and storms possible early, then clearing. High 73°F. Dangerous beach conditions continue into the morning.
Friday, August 1:
- Sunny, pleasant, high near 73°F. Great day for outdoor plans.
Saturday, August 2:
- Mostly sunny, high 75°F. Dry and warm for summer activities.
Sunday, August 3:
- Partly sunny, high 77°F. Chance of showers and thunderstorms late.
Monday, August 4:
- Partly sunny, high 79°F. Scattered storms possible.
Stay weather-aware and check back for updates as severe summer storms threaten Chicago this week
