Chicago wakes up warm, sticky and already on edge this morning, with temperatures near 73°F and dewpoints in the low 70s. Highs are set to climb into the upper 80s on Wednesday, June 10, 2026, pushing heat-index values toward 95–100°F by midday. Showers and thunderstorms are likely by mid to late afternoon, with another round tonight and a more significant system expected on Thursday, June 11, 2026.
Afternoon And Evening Storms
Showers and thunderstorms are expected to fire up after about 3 p.m. and continue into the early evening across the metro area. South-southwest winds will pick up, generally 5–20 mph with gusts of 20–35 mph, and any storm cluster could bring damaging gusts and short bursts of heavy rain. Quick downpours of roughly a quarter to a half inch in many spots could make the evening commute dicey, according to the National Weather Service.
Thursday Is The Day To Watch
Forecasters say Thursday, June 11, 2026, carries the greatest risk. Multiple rounds of storms could produce damaging winds, large hail, localized tornadoes and heavy rain that may lead to flash flooding. Models and local forecasts highlight the chance for training storms and pockets of excessive rainfall across northern Illinois and nearby counties, so outdoor events should have a solid backup plan ready to go. For background on the developing multi-day pattern, see the June 8 roundup on the soggy, sweaty stretch ahead.
Fog, Boaters And Flights
A Dense Fog Advisory affects parts of the nearshore lakefront this morning, and a Small Craft Advisory is in effect for Illinois and Indiana nearshore waters from 2 p.m. to 9 p.m. Wednesday. Wind shifts and gusty thunderstorm winds may also affect flights at ORD and MDW this afternoon, setting up possible delays and variable conditions at lakefront parks. Check real-time advisories and marine guidance from the National Weather Service before heading out on the water.
How To Plan
If you can, move or shorten outdoor plans this afternoon and Thursday, keep a close eye on warnings, and be ready to head indoors quickly if thunderstorms pop up. Do not drive through standing water, secure loose outdoor furniture before the gusts arrive, and keep a charged phone handy so you can receive urgent alerts. If you are traveling this week, build in extra time and be ready for changing conditions across the region.
