Illinois — Low clouds hang over roadways this morning, muting skylines and dampening pavement as commuters ease into a mild January day. Patches of drizzle and fog reduce visibility, especially north of I-80, setting a slow start across the Chicago area.
According to the National Weather Service, temperatures remain well above average through midweek, climbing into the 40s and low 50s today and Wednesday. That warmth keeps roads mainly wet rather than icy, though fog may linger during the early commute. Drivers are urged to slow down and allow extra stopping distance.
Conditions shift as moisture deepens by Thursday. Rain spreads back into northern Illinois, becoming steadier by afternoon and evening. Some locations could see soaking rainfall, enough to create ponding on highways and slick city streets during peak travel times. For now, temperatures stay warm enough for rain, not snow.
By Friday, cooler air filters in behind the system. Rain becomes lighter and more scattered, but colder nighttime temperatures begin to matter. Lows dip toward freezing, raising the possibility of patchy slick spots where moisture lingers after sunset.
Attention then turns to the weekend. Forecast guidance suggests a mix of rain and snow is possible Saturday, especially during colder periods. Accumulations look limited, but even light snow or a brief mix could impact travel, particularly on bridges and untreated roads. Temperatures fall back into the 30s by day and the 20s at night, restoring a more seasonal winter feel.
This stretch of changing weather comes as many students return to school after the holiday break. Extra caution is advised during morning drives, especially in fog or rain. After all, rapid weather swings often catch drivers off guard.
