A Winter Weather Advisory is in effect until 1 PM on Sunday for Winnebago, Boone, McHenry, Stephenson, and Jo Daviess counties. A wintry mix may lead to slick road conditions and reduced visibility. Patch freezing rain will linger into Sunday morning. Freezing rain/rain/sleet will eventually transition to light snow on Sunday.
A slow moving low-pressure system continues to dominate the weather pattern across the Midwest. Rain showers spread across the Stateline again this afternoon and will continue overnight as a wintry mix. Temperatures overnight will sit at or just below freezing. With warm air aloft, freezing rain is possible into Sunday morning. Any ice accumulation would be light, but some slick spots may be an issue on road surfaces. Drive slowly and carefully.
A freezing rain/rain/sleet mixture is possible through Sunday morning. By late morning and midday, precipitation will transition to light snow. Snow showers will become more sporadic in the afternoon, but some light accumulation on grassy and elevated surfaces is anticipated. An inch of snow is possible, but a few isolated locations could add up to two inches. A NE wind gusting to 30 mph will add to the winter-like feel of Sunday, keeping wind chills in the 20s.
Conditions will settle down Monday. Some light lingering snow is possible in the morning, but we are then left with a cloudy sky for the remainder of the day. Temperatures slowly warm through the week.