National Weather Service United States Department of Commerce

Areas of dense fog has formed across portions of west central IL, northeast MO, and far southeast IA. Motorists should use their low beams and allow for plenty of braking distance as visibility can change rapidly. Fog to lift a few hours after sunrise.
Warm conditions are expected to continue through this weekend, with highs in the 70s and 80s. Occasional showers and storms are possible both Saturday and Sunday (20-50%).
Widespread rain and thunderstorms spread across Iowa Tuesday evening and spread east through Illinois and northeast Missouri by early Wednesday morning. The heaviest rains fell across central and eastern Iowa, with 2 to 4 inches of rain falling just south of the I-80 corridor in Iowa. For many this was a welcome rain, ending several weeks of dry weather.