Waves of cold air pouring into the Midwest set the stage for the season's first appearance of snowflakes around Chicago Tuesday.
Enough cold air was in place for snowflakes to mix with the rain in some of the western suburbs during the afternoon hours with parts of the city getting an opportunity for toward 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 held temperatures in the 30s and low 40s.
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A storm with rain, ice and snow will continue to affect the northwestern United States into Wednesday with wet and wintry travel.
Warmth will continue to build over much of the eastern United States into next week, ahead of what could be a major snowstorm for parts of the Central states.
Bitter cold and snow lashed Italy and the Balkan Peninsula during the first half of January, and more inclement weather is expected this week.
Germany will endure its longest stretch of cold weather so far this season.
Soaking rain will elevate the flood threat over the southern United States late this week, followed by a severe weather threat this weekend.
A new round of storms will bring locally drenching rain and heavy mountain snow, with possible flooding and travel disruptions, in California.