CHICAGO (WLS) -- Get ready for a weather rollercoaster this weekend, Chicago!
A few non-severe storms passed through the Chicago area on Saturday afternoon. But, the Chicago area was under a threat of severe weather as thunderstorms were expected to spread across northern Illinois Saturday evening.
Some of Chicago's northern and western suburbs, along with some areas of Wisconsin, saw Severe Thunderstorm Warnings on Saturday evening, but they have expired.
Severe Thunderstorm Warnings issued for McHenry, Boone, DeKalb, Ogle and Winnebago counties in Illinois have expired.
Severe Thunderstorm Warnings were also issued for Rock, Kenosha, Racine and Walworth counties in Wisconsin, but have since expired.
WATCH | Latest Chicago Weather Forecast
ABC7 meteorologist Jaisol Martinez said damaging winds, hail and frequent lightning are the greatest threats in any storms that develop.
Storms were expected to roll through between 7 p.m. and 12 a.m. The main area of concern is southwest of Chicago, Martinez said. Storms will move northeast at around 40 mph.
The Storm Prediction Center had most of the Chicago area under a "marginal" risk of severe weather, a level 1 out of 5. The far southwest suburbs were in the "slight" risk category, a level 2 out of 5.
Additional storms are possible overnight into Sunday, but are not expected to turn severe.
Then, big changes are in store for Sunday. We'll see the warmest weather in the morning, with high temperatures around 60, before a cold front brings blustery conditions and the possibility for a rain/snow mix Sunday night.
Low temperatures Sunday night will be around the freezing mark.
Weather Alerts | Live Doppler Radar