Rainfall totals haven't been much with most receiving under 0.40" through Sunday evening, but it's been a pretty steady rain.
Ongoing showers will be likely by Tuesday morning with skies possibly drying out by the afternoon. As the low pressure system pulls into the Upper Midwest Tuesday afternoon, a strong cold front will sweep across Wisconsin and Illinois. Ahead of the front, dew points (moisture) nearing 50 degrees - which is high for this time of year - will be pulled northward into Central, and possibly Northern Illinois.
Storm Prediction Center