Freezing rain could make Wednesday morning's commute “hazardous," according to the National Weather Service.
“Ice accumulation in parking lots, roads, and sidewalks could make for slippery and hazardous travel first thing in the morning, and that would include the morning rush hour commute,” NWS meteorologist Mark Ratzer said.
Tuesday night's low is forecast to reach 26 degrees. Freezing drizzle will begin predawn about 4 a.m. to 5 a.m and continue through the morning.
Although only a light glaze – a few-hundredths of an inch of ice – is expected to accumulate, Ratzer said it doesn’t take much to make roads slippery.
A winter weather advisory is in effect for McHenry, Lake, Boone and Kane counties on Wednesday from 6 a.m to noon.
Temperatures gradually will warm to above freezing about 11 a.m. The forecast likely will be cloudy with patchy fog expected between 7 a.m. and 4 p.m. Winds could gust as high as 25 mph.
A drizzle will follow into Wednesday afternoon with temperatures possibly reaching a high of 34 degrees. The evening will be dry but temperatures Wednesday night will sink to the teens, Ratzer said. The overnight low is expected to be 14 degrees.
Wednesday might not be the only day that’ll make for slippery travel.
Meteorologists said they’re still expecting a winter storm to move through the area Friday night and Saturday.
While details aren’t confirmed, Ratzer said the storm could start with snow Friday and potentially change into a mix of freezing rain and sleet Friday night. The storm could change back to snow Saturday before it ends.