Chicago, Illinois – The Great Lakes region settles into a prolonged stretch of below-normal temperatures during the Feb 5–9 period, with cold air firmly entrenched across Illinois, Indiana, Michigan, Ohio, and Wisconsin. While major winter storms appear unlikely, the persistence of the cold will remain the dominant concern, especially during overnight and early morning hours.
According to the National Weather Service and NOAA outlooks, Arctic air continues to hold across the eastern half of the country, keeping temperatures 10 to 20 degrees below seasonal averages across much of the Great Lakes. The cold pattern stretches from the Upper Midwest through the Ohio Valley and eastward into the Mid-Atlantic, while precipitation chances remain limited south of northern Illinois and west of the Pacific Northwest near Eugene, Oregon.
In Chicago, Detroit, Cleveland, and Milwaukee, daytime highs are expected to struggle through the 20s and low 30s, with overnight lows frequently dropping into the teens and single digits. Areas closer to the lakes may see added wind, pushing wind chills even lower at times. While lake-effect snow remains possible in localized areas, widespread accumulating snowfall is not expected during this stretch.
The extended cold follows recent weeks in which nearly 100 temperature-related deaths have been reported across southern states, underscoring the risks tied to prolonged exposure nationwide. Officials urge residents to limit time outdoors during the coldest periods, protect exposed pipes, and use space heaters safely.
The cold, mostly dry pattern is expected to persist through the period, with additional cold weather advisories possible if Arctic air remains locked in place.
