The statewide average precipitation in Illinois for October was 4.94 inches, 1.70 inches above normal, and the 10th-wettest October since 1895, said Illinois State Climatologist Jim Angel of the Illinois State Water Survey, part of the Prairie Research Institute at Illinois.
The largest monthly total in the state was 15.90 inches of precipitation in Glen Ellyn. Seven other sites in northeast Illinois reported more than a foot of precipitation in October. Several weather-monitoring sites in northern and central Illinois reported snow on Oct. 28, although only flurries occurred in most areas. However, one station, New Lenox in Will County, reported 0.1 inches of snow.
The statewide average temperature for October in Illinois was 57.7 degrees, 3.3 degrees above normal and the 21st-warmest October since 1895. The first 21 days of October were about 7 degrees above normal, and the last 10 days were 7 degrees below normal.
In many areas of the state, temperatures fell below freezing for the first time this fall. The coldest temperature in the state was 19 degrees at Perry on Oct. 29.
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