First this morning we have the fog, with areas of dense fog developing. There is a Dense Fog Advisory in place for Green County in Wisconsin, as well as Jo Daviess, Carroll, Whiteside, and Stephenson counties until noon today. Even though the advisory will end at noon, we will still see areas of fog through the day today.
Along with the fog, we will have on and off rain and areas of drizzle. There is enough lift in the atmosphere to help wring out some of the moisture in the overcast skies we have currently, allowing for areas of drizzle, as well as scattered showers that will lift north through northern Illinois. We will have some dry hours today, but overall it is going to be a damp and gloomy day. The rain will stay steady through the evening as the low pressure system moves overhead. Overnight we keep the drizzle into Saturday morning.
Our focus then shifts to the west where our next system is currently taking shape over the Pacific, that will bring us the possibility of accumulating snow across portions on the Stateline. The system moves onshore today, and tracks into Oklahoma on Saturday morning where it will develop into a low pressure system. A trailing cold front will drop temperatures into the lower 30's through Saturday
afternoon, while at the same time the low pressure tracks through southern Illinois and then into Indiana. With the current track in place the heaviest of the snow will be to the south and east of the Stateline, focusing closer to the Chicago area, suburbs, and into western Indiana. For the Stateline, west of Rockford you can expect generally a dusting of snow, to possibly one inch. For Freeport west through Rockford and Belvidere, and south towards Sterling about an inch is possible, though some could see closer to two inches. The heavier snow, and heavier snow bands will then focus east of the area, however eastern portions of DeKalb and Mchenry County could see two to three inches. If you are heading into the Chicago area, 3-6 inches is possible with locally higher amounts in any heavier bands that set up. 
The snow will quickly come to an end late Saturday night into early Sunday morning. Winds behind t he strengthening low pressure system really pick up Saturday into Sunday. Even though the snow will be done on Sunday, blowing snow will be an issue with strong northwest winds in place. The northerly flow also brings in an arctic blast of air bringing highs to a halt in the teens Sunday into next week. By Monday morning look for wind chills 10 to 20 below zero.
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