Parts of northern Illinois could see up to four inches of snow in the overnight hours and into Wednesday morning, prompting a Winter Weather Advisory for several counties in the southwestern suburbs.
According to the National Weather Service, the advisory covers LaSalle, Kendall, Grundy, and Livingston counties, and will go into effect at midnight. The advisory is set to last through 10 a.m. Wednesday.
Forecasts are calling for wet snow to fall across the area, with accumulations of 2 to 3 inches in the counties under the advisory. Up to four inches could fall in some locations, according to the weather service.
- Interactive Radar: Track the Snow on the NBC app
Accumulations will primarily be confined to grassy and elevated surfaces, but some slushy conditions are possible on area roadways as snow is expected to fall heavily at times.
Far northeastern counties in Illinois are also expected to get some snow in the overnight hours, but in smaller amounts, as 1 to 2 inches are expected in some locations.
The wintry weather is expected to stick around through Halloween, when a rain-snow mix could potentially spell trouble for trick-or-treaters.