Light snow remains in the forecast for northern Illinois and southern Wisconsin on Sunday. Not much has changed from the last few days, in terms of snowfall timing and potential accumulation.
Sunday will start off mainly cloudy and cold. Temperatures will finally rise out of the single digits and teens for the first time since Thursday morning. Highs will top out in the middle 20s.
Light snowfall will push into the area during the afternoon hours, lingering through Sunday evening and night. Winter Weather Advisories have been posted for parts of Nebraska, Iowa, Minnesota, and most of Wisconsin. As of Saturday night, our local southern Wisconsin counties of Green, Rock, and Walworth are included in the advisory. This advisory runs from Noon Sunday through 6am Monday morning.
A general 1 to 3 inches of snow is expected across our area, including metro Rockford. The higher totals will be in southern Wisconsin. A few spots north of a line from Monroe to Janesville to Elkhorn could pick up more than 3 inches. The lowest snowfall totals will be south of Interstate 88. Areas roughly south of a line from Rock Falls to Amboy to Aurora may see less than 1 inch.
Behind the main batch of snow Sunday night, a few pockets of light freezing drizzle are possible. Combined with the light snow, this could make a few untreated roads slippery overnight and for Monday morning. A few lingering flurries are possible early Monday before clouds gradually decrease and temperatures slide into the teens for the afternoon.
Due to the light, powdery nature of the snow and an increasing northwest breeze on Monday, some minor blowing and drifting will be possible.