Chicago, IL — The Chicago area is set to endure one more day of oppressive heat and humidity on Thursday, as forecasters warn of potentially severe storms that could bring both relief and hazards by the afternoon and evening.
A heat advisory remains in effect through Thursday night, with heat index values expected to exceed 100°F once again—possibly reaching up to 110°F in some of the far western suburbs. Actual temperatures will rise into the mid- to upper 90s, making for another sweltering day across the region.
Storms May Break the Heat
Relief is on the horizon, however, as a cold front approaches the region, offering a chance for showers and thunderstorms that could bring cooler air and lower humidity by Friday.
The Storm Prediction Center (SPC) has placed the entire Chicago metro area under a “marginal risk”—the first level on a five-tier scale—for severe weather. According to the NBC 5 Storm Team, the primary threats with any storms will be:
- Heavy rainfall, which could lead to localized flash flooding
- Gusty winds, capable of causing isolated damage
Forecast models suggest a wave of storms could develop as early as early afternoon, potentially bringing an abrupt end to the heat wave. A more widespread round of thunderstorms is expected later in the day, possibly into the evening hours, intensifying the risk of flash flooding and strong wind gusts.
Cooling Trend Follows, But Won’t Last Long
Once the cold front moves through, Friday will offer a welcome break, with seasonal temperatures in the low 80s and lower humidity levels. However, this reprieve will be short-lived.
Forecasts show another warm-up arriving Saturday, with highs back in the low 90s, followed by another heat spike early next week, with mid-90s possible by Monday. A second cooldown is projected for the second half of next week, bringing temperatures back down to around 80°F, according to long-range models.
Safety Reminders
As the heat lingers and storms develop:
- Stay hydrated and avoid outdoor activities during peak heat hours.
- Be alert for weather warnings and flood advisories, especially in low-lying or flood-prone areas.
- Secure outdoor items ahead of gusty winds and monitor local forecasts.
Chicagoans will need to brace for a stormy, steamy Thursday, but relief is in sight—if only briefly—before summer heat returns for the weekend.
