Chicago woke up to almost patio-weather territory on Thursday, March 26, with Midway registering about 57°F before sunrise and highs expected to flirt with 70°F. That taste of warmth will not last. A fast-moving cold front is set to bulldoze through this afternoon, knocking temperatures from near 70°F down into the low 40s by late afternoon and dragging showers, thunderstorms, and a blast of colder air in its wake.
Afternoon Storms And Severe Risk
Thunderstorms are most likely between about 2 p.m. and 6 p.m. Thursday, with the greatest chances near and south of I‑80. The National Weather Service has placed parts of the region in a level 3 (out of 5) severe threat, calling out large hail and damaging straight-line winds as the main hazards, and noting pockets of heavier rain with locally 1–2 inches possible south of the Kankakee River, according to NWS Chicago.
Afternoon Winds Pick Up
Behind the front, winds will swing around to the NNE and crank up to sustained 20–25 mph, with gusts commonly in the 35–45 mph range, especially along the lakefront and nearshore. A Gale Warning covers the Illinois and Indiana nearshore waters into early Friday morning, so boaters and anyone with plans on the lake should factor that in. Ceilings are expected to lower into low MVFR to IFR this evening, which could complicate both ground and air travel.
What This Means For Your Commute And Plans
If you have outdoor plans or a late-day commute, treat this like a mid-spring storm day: secure loose patio furniture and lightweight yard items, and keep a waterproof layer handy. Sudden downpours and hail can sharply cut visibility and make driving dicey. Thunderstorms and strong gusts could also lead to delays at O'Hare and Midway, where previous rounds of storms have produced cancellations and long waits, per NBC Chicago.
Friday And The Weekend
Behind today’s fireworks, much colder air settles in on Friday, with highs mainly in the mid-30s to low-40s and continued breezy conditions. Most guidance keeps Friday dry across the metro. The good news for weekend planners: a warming, drier trend is expected Saturday and Sunday, with milder conditions returning ahead of another unsettled pattern early next week.
