A weak weather system will drop into the area Monday night and bring scattered showers to areas south and west of I-74 / 72.
Tuesday, the sky will become mostly sunny across most of the area, with a few lingering showers in southeast Illinois early in the day. The sky will then be mostly clear Tuesday night.
Cloudiness for Monday and northerly winds tomorrow will keep temperatures just below normal through Tuesday. The cooler temperatures Tuesday night and mostly clear skies will lead to patchy frost being possible as lows dip to the mid-30s.