A low-pressure “clipper” system is forecast to move east out of Minnesota through Wisconsin on Thursday into Lower Michigan in the evening.
Most of the accumulating snow associated with this system will probably drop north in Wisconsin, but, sitting on the southern edge of the snowfall, the Chicago area could pick up a dusting to as much as an inch close to the Illinois-Wisconsin state line — the light snowfall probably beginning later in the afternoon, persisting into the overnight hours.
It will be seasonably cold Thursday and Friday, but even so, readings will probably average out 3 to 5 degrees above normal. (Our normal high/low this time of the year is 32/17.) The Chicago area has recorded above-normal temperatures the past 13 days, so with a warmup forecast for this weekend, the string of above-normal days could reach 17.
That may be it, though, as the arrival of a low-pressure system with snow and a strong northwesterly flow aloft looks to bring sharply lower readings the first part of next week.