Chicago recorded its first official trace of snow of the season at O’Hare Airport on Monday morning, according to the National Weather Service.
Accumulation of more than a tenth of an inch is unlikely, though people might see some of the white stuff sticking around on grass or elevated surfaces such as decks, said Kevin Donofrio, a meteorologist in the Chicago office of the National Weather Service.
Historically, Oct. 30 is the “normal first date” for a trace of snow in Chicago, according to weather service data. The earliest trace recorded happened on Sept. 25, 1942, and the latest first trace occurred on Dec. 5, 1999.
The normal first date for an inch or more of accumulation is Dec. 7, with the earliest inch recorded on Oct. 19, 1989, and the latest on Jan. 25, 2013.
The forecast for the week looks to be chilly at the outset, with warmer temps moving into the area midweek.
Light rain with rain/snow mix N of I-55 today. Only minor snow accumulation expected. Light precip. moves south later tonight. Temps remain below normal through mid-week, but close to normal by the weekend. Next chance rain Wed night through Thu. #INwx #ILwx pic.twitter.com/30m4pW68Eq
— NWS Chicago (@NWSChicago) October 26, 2020