Cooler & less humid...
Dry and less humid weather will continue for another day, as high pressure slowly slides east into the area by Monday night. Temperatures will be cooler than last week, and closer to "normal".
A weak weather system will approach the area Tuesday, with a chance of scattered showers and thunderstorms Tuesday night.
As the weather system moves into the area Wednesday, the chance of showers and thunderstorms will spread east over the rest of central Illinois.
The increasing cloud cover and precipitation will cause temperatures to be just a bit below normal.