Illinois State Water Survey
Institute of Natural Resource Sustainability
University of Illinois at Urbana-Champaign

Illinois State Climatologist Office

Jim Angel, state climatologist

Averages and Records for Champaign-Urbana, Illinois

Jim Angel, state climatologist

Here are the average monthly high and low temperatures, precipitation, and snowfall for Champaign-Urbana. The averages are based on the 1971-2000 normal. Below the table are selected records set here.

Monthly Averages

Month Average High Average Low Average Precipitation Average Snowfall
January 32.0 16.7 1.89" 8.6"
February 37.6 21.7 2.01" 5.5"
March 49.6 31.2 3.21" 3.3"
April 62.2 40.8 3.65" 0.5"
May 73.6 51.8 4.80" 0.0"
June 82.6 60.9 4.21" 0.0"
July 85.2 64.8 4.67" 0.0"
August 83.2 62.7 4.37" 0.0"
September 77.6 54.6 3.22" 0.0"
October 65.2 43.3 2.81" 0.1"
November 49.6 33.0 3.40" 2.1"
December 36.8 22.2 2.76" 6.1"
Annual 61.3 42.0 41.00" 26.2"

The average date of the last spring frost is April 15.

The average date of the first fall frost is October 17.

The record high is 109 on July 14, 1954.

The record low is -25 on four(!) occasions: 9 Feb 1899, 13 Feb 1905, 19 Jan 1994, and 5 Jan 1999.

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.

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.

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.

Temperature and precipitation records go back to 1888 for Champaign-Urbana. Snowfall records go back to 1903.