- Average warmest month: July
- The record high is 109° F (43°C) on July 14, 1954.
- Coolest month: January.
The record low is -25° F (-32°C) on four(!) occasions: 9 Feb 1899, 13 Feb 1905, 19 Jan 1994, and 5 Jan 1999.
- The most precipitation on average occurs in May.
- The maximum seasonal snowfall was 67.2 inches in the winter of 1977-78.
- The minimum seasonal snowfall was 6.7 inches in the winter of 1953-54.
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The greatest depth of snow on the ground was 19 inches on February 8-10, 1982.
The greatest 24-hour snowfall was 15 inches on January 1-2, 1999.
The average date of the first measurable snow (one-tenth of an inch or more) is November 23.
The average date of the first 1-inch snow (1 inch or more) is December 2.
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The average date of the last spring frost is April 15.
The average date of the first fall frost is October 17.
[Source: UofI]