Temperatures reached the middle and upper 60s in Chicago Saturday with a few south suburban spots topping 70. The unseasonably mild day was marred by thunderstorms that peppered the area with hail and brief downpours. Most of the hail was small, but the stones reached ping-pong ball size at Bolingbrook and penny to nickel- size at Naperville and Oak Brook.
Sunday promises to follow suit with more balmy temperatures in the middle and upper 60s. Scattered showers and thunderstorms should develop in the afternoon, but more widespread activity is expected Sunday evening along a powerful cold front threatening to make the Bears game a very wet affair. Temperatures will crash Sunday night as temperatures following the cold front passage as gusty west winds drop readings into the lower 30s by Monday morning, potentially bringing the city the season’s first snowflakes as the lingering showers mix with or change to snow.