National Weather Service United States Department of Commerce

Freezing drizzle will once again be possible this evening into Wednesday morning across northern Illinois and northwest Indiana. Allow extra travel time and be cautious, and this includes when walking on sidewalks and parking lots.
Here's a look at the weather highlights and hazards for the upcoming weekend into early next week. A storm system will move through the plains and to the northeast during this weekend. Accumulating snow with gusty winds is expected across the region beginning Friday evening and continuing into Saturday, possibly producing significant amounts. Stay tuned as this storm gets closer, for any changes in the forecast track, but be prepared for winter weather again this weekend. For late Saturday into Sunday, lake effect snow will be possible with a continuation of blowing and drifting snow. After the snow, the area will deal with some bitterly cold temperatures, as minimum wind chills could get as low as twenty degrees below zero.
After early morning freezing drizzle on Wednesday, skies will become mostly cloudy with temperatures in the upper 20s to low 30s. The next round of snow will begin Thursday morning and continue into the late afternoon hours. Accumulating snow will be possible mainly along and south of the I-80 corridor, though most areas will see under an inch of snow. The main weather event will begin Friday night when accumulating snowfall is probable.