A cold and wet start to the work-week includes the potential for freezing drizzle and minor snowfall accumulation today.
Light snow is already falling west of I-39 in the northwest part of Illinois. Precipitation will continue to spread eastward to impact the greater Chicago area by 10 am, falling initially as mixed precipitation of sleet and rain mixed with snow before changing over to mostly snow. A period of moderate precipitation exists between 12-4 pm, before diminishing to drizzle during the evening hours and ending around 2-4 am Tuesday morning. With temperatures hovering around the freezing mark, there is the potential for freezing drizzle Monday night as well.
Total snow accumulation will range from 2-4″ at Rockford; 1-3″ for most of the Chicago region north of I-88; and little to no accumulation near the Loop and southward.
With warmer ground and pavement temperatures, most of the snow accumulation is expected to occur on grassy areas and bridges. Still, slushy road surfaces may exist, especially in far-west areas west of Kane and McHenry counties, and a Winter Weather Advisory is active for Northwest Illinois counties west of I-39 from 10 am to 7 pm for hazardous travel conditions.