Good evening. Illinois. I'm Aaron Jolly. That mist on your windshield this morning? Just the opening act. A stalled warm front is cutting Illinois in half today, creating two completely different worlds. Dense fog has settled in. And visibility is dropping fast across the state. In the next 24 hours. Down in Central Illinois, you're sitting on the warm side of the line. Temperatures are hovering near 49 degrees right now. You climb to 63 degrees Thursday afternoon. Showers and thunderstorms roll through tonight, with up to a half inch of rain possible. Push north to Chicagoland. And the scene changes. The thermometer sits at 40 degrees and barely budges. Fog drapes the region while rain chances peak around 8 P.M. Tonight, lows hold steady near 40. Northern Illinois sees similar gloom. Patchy fog and scattered showers stick around. Your high tomo ...