Frigid temperatures Monday and Christmas Eve may give way to a snowy Christmas morning that could leave between one and two inches of snow across the Chicago area.
The temperature at O’Hare International Airport fell to minus 2 degrees overnight as of just before 6 a.m.
Monday’s high was 25 degrees and that was measured about 1 a.m. at O’Hare. It’s gotten steadily colder since then.
Wind chills still are in the minus 10 to minus 20 range and will stay that way overnight, according to the National Weather Service. Christmas Eve’s high temperature is predicted to be about 17 degrees under clear skies.
But temperatures will start to warm late in the day Tuesday and Wednesday, with some early morning snow and temperatures possibly moving into the 30s, making Christmas Day feel like a gift.
The predicted temperatures would make the holidays a little colder than usual. The weather service, using figures from 1873 to 2012, said the normal high temperature on Christmas Day is 32 and the normal low is 18. The coldest Christmas temperature was in 1983 at 17 below, and the warmest was 64 degrees in 1982.
There is no precipitation on Christmas about 38 percent of the time, the agency said; there is no snow 45 percent of the time. The biggest Christmas snowfall here was 5.1 inches in 1950.