Lake effect snow is forecast starting Monday evening, and temperatures will plunge as a cold air mass moves into the Chicago area, the National Weather Service in Chicago said.
Wind chill values could drop as low as -25 ℉, the service said. To avoid hypothermia and frostbite, it advised dressing warmly, with a hat and gloves. Actual temperatures could go as low as -1 ℉, according to weather.com.
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