Weather Observations for Champaign-Urbana, Illinois
Illinois State Water Survey, Prairie Research Institute, University of Illinois
Annual 2015 NORMALS
  High Depart Low Depart Mean Depart Precipitation Depart Snowfall Depart HDD Depart CDD Depart High Low Mean Precipitation Snowfall HDD CDD
January 26.1 -6.8 11.1 -5.6 18.9 -5.9 0.92 -1.13 3.3 -3.5 323 -933 0 0 32.9 16.7 24.8 2.05 6.8 1256 0
February                             37.7 20.2 29.0 2.13 5.8 1009 0
March                             49.9 30.0 40.0 2.86 2.6 777 1
April                             62.8 41.1 51.9 3.68 0.4 402 10
May                             73.4 51.6 62.5 4.89 0.0 146 69
June                             82.5 61.9 72.2 4.34 0.0 17 233
July                             85.0 64.9 74.9 4.70 0.0 1 309
August                             83.7 63.1 73.4 3.93 0.0 5 265
September                             78.2 54.2 66.2 3.13 0.0 79 115
October                             65.2 42.6 53.9 3.26 0.1 358 14
November                             50.6 32.0 41.3 3.68 0.9 711 0
December                             36.7 21.2 28.9 2.73 6.6 1117 0
                             
Annual 26.1 -6.8 11.1 -5.6 18.9 -5.9 0.92 -1.13 3.3 -3.5 323 -933 0 0 61.6 41.6 51.6 41.38 23.2 5878 1016
Winter Season                 4.2   2676      
Notes:
Temperatures are from midnight to midnight (calendar day) and are in degrees Fahrenheit
Precipitation and snowfall are measured at 8 am and represent the previous 24 hours, T means a trace of precipitation
Time is always Central Standard Time (CST)
Heating and cooling degree days use a base temperature of 65°F
Normal refers to the new 1981-2010 average
Winter season for snowfall and heating degree days starts on July 1, 2014, and ends on June 30, 2015.