Waves of cold air pouring into the Midwest may set the stage for the season's first appearance of snowflakes in Chicago later Tuesday.
Enough cold air will be in place for snowflakes to potentially mix with the rain headed to Chicago Tuesday afternoon and evening.
The best opportunity for the rain and snowflakes will be toward the I-80 corridor.
Any snow that falls is not expected to accumulate, but will remind residents that winter is just around the corner.
The official AccuWeather.com Winter Forecast states, "Conditions could align to bring Chicago a winter storm in time for the holidays."
Tuesday's rain and clouds will also hold high temperatures to the lower 40s. Prior to that, temperatures will only top out in the upper 40s on Monday as brisk winds usher in fresh cool air.
A low of 34 degrees is expected Monday night. Clouds preceding Tuesday's storm should arrive quick enough to prevent frost from forming.