Illinois Weather Trivia for January 31st
- A winter storm moving northeast out of the southern Plains states affected central and southern Illinois with very heavy snowfall during the last few days of the month. The heaviest snowfall was found southeast of St. Louis, where thunderstorms contributed to the 20 inch snow total. A large area of 12 inches or more of snow extended northeast from St. Louis to the Champaign area. where some thunderstorms were also reported. 16 inches of snow were reported in parts of Edgar County.
- A January thaw was in full force in central Illinois. Peoria's high temperature of 70 degrees set a record for the date, and was only the second time a high of 70 or above has been noted in Peoria during January.
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