Illinois Weather Trivia for December 25th
- The chances of a "White Christmas" are based on 30 years worth of climatological data, and gives the likelihood of there being at least 1 inch of snow on the ground. In Illinois, chances of a White Christmas range from around 60% near the Wisconsin border, to around 10% at the extreme south tip of the state. In central parts of Illinois, the chance is around 30% to 40%.
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