What are the historical chances of having a white Christmas? State Climatologist Jim Angel says the chance of a White Christmas varies greatly by region. Statistically there's a 40 - 60% chance in Northern Illinois, 20 - 40% in Central Illinois, and less than 20% chance of snow in the southern third of the state.
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In fact, Angel says the long term forecast is calling for above normal temperatures in Illinois for the next two weeks.