Northern and Central Illinois – Rain and snow chances are expected to increase across northern and central Illinois during the January 7–13 period, according to the latest federal weather outlook, raising the potential for mixed-precipitation travel impacts across a large portion of the state.
According to the National Weather Service Climate Prediction Center, the region is included in an area forecast for near- to above-normal precipitation during the 8–14 day window. In mid-January, this pattern supports a combination of rain and snow, with precipitation type varying based on storm timing and temperature fluctuations.
Much of northern and central Illinois falls within the 33–50% probability range for above-normal precipitation, indicating an increased likelihood of multiple weather systems rather than a single, high-impact event. Northern Illinois, including areas near the Wisconsin border and the Chicago metropolitan area, may experience periods of snow or a rain-snow mix, while central Illinois is more likely to see rain during milder periods with brief transitions to snow as colder air moves in.
Temperature outlooks for the same timeframe indicate near-normal temperatures across the region. This setup increases the potential for rapidly changing precipitation types and raises concerns for refreezing on untreated roads, bridges, and overpasses, particularly overnight and during early morning hours.
For commuters, students, and freight operators, the developing pattern may lead to slick roads, reduced visibility, and variable travel conditions. Major corridors including Interstate 90, Interstate 80, Interstate 88, Interstate 55, Interstate 57, and Interstate 39 could be affected during active weather periods, especially during peak commute times.
Forecasters emphasize that 8–14 day outlooks reflect probability trends, not specific precipitation totals or storm timing. Residents are encouraged to monitor daily forecasts and updates from local National Weather Service offices as the period approaches.
No winter storm watches or advisories are currently in effect based solely on this outlook, but the signal supports increased awareness for rain and snow impacts during the second week of January.
