Weather Observations for Champaign-Urbana, Illinois
Illinois State Water Survey, Prairie Research Institute, University of Illinois
December 2014
  Midnight to Midnight 8 AM Observations  
  Temperature (F) Degree Days Precipitation (inches) Soil Temperature (F) Temp. (F)  
Day High Time (CST) Low Time (CST) Mean Depart Heating Cooling Precipitation Snowfall Snow Depth 4 inch 8 inch Morning Low Comments
1 31 12:20 AM 21 9:04 PM 26 -8 39 0 T 0.0 0 44 43 22 fog
2 32 2:00 PM 23 12:03 AM 28 -6 37 0 0.00 0.0 0 40 40 23  
3 42 2:07 PM 27 6:57 AM 35 +2 30 0 0.00 0.0 0 41 40 27  
4 33 11:57 PM 25 2:48 AM 29 -4 36 0 0.00 0.0 0 40 39 25  
5 40 3:20 PM 33 12:05 AM 37 +5 28 0 0.03 T 0 41 40 33 snow, fog
6 39 2:13 PM 29 11:53 PM 34 +2 31 0 0.57 0.0 0 43 41   fog, rain
7 36 10:36 AM 26 7:14 AM 31 0 34 0 0.00 0.0 0 40 40 26 fog
8 39 3:19 PM 30 1:09 AM 35 +4 30 0 T 0.0 0 41 39 30 rain
9 38 1:22 PM 30 3:37 AM 34 +3 31 0 0.02 T 0 42 40 30 rain, snow, fog
10 35 1:08 PM 31 11:57 PM 33 +3 32 0 0.00 0.0 0 41 40 32 fog
11 32 2:19 PM 23 11:23 PM 28 -2 37 0 0.00 0.0 0 41 40 29  
12 37 11:45 PM 22 3:12 AM 30 0 35 0 0.00 0.0 0 39 39 22 fog
13 50 1:23 PM 33 2:47 AM 42 +13 23 0 0.00 0.0 0 41 39 33 fog
14 47 3:16 PM 43 7:12 AM 45 +16 20 0 0.00 0.0 0 45 42 43 fog
15 45 11:58 PM 42 6:54 PM 44 +15 21 0 T 0.0 0 47 44 44 fog
16 45 12:44 AM 26 11:57 PM 36 +7 29 0 0.02 0.0 0 47 44 40 fog, rain
17 26 12:09 AM 21 8:17 AM 24 -4 41 0 T T T 42 41 21 light snow, fog
18 28 2:13 PM 23 11:13 PM 26 -2 39 0 T T 0 40 39 24 light snow, fog, haze
19 35 2:34 PM 20 2:50 AM 28 0 37 0 T T 0 39 38 20 snow, fog
20 34 1:08 PM 24 12:59 AM 29 +1 36 0 0.00 0.0 0 38 38 24 fog
21 40 11:59 AM 29 11:06 PM 35 +8 30 0 0.00 0.0 0 39 38   fog, haze
22 46 11:56 PM 29 12:06 AM 38 +11 27 0 0.01 0.0 0 40 38 29 light rain
23 48 2:44 AM 40 7:37 AM 44 +17 21 0 0.58 0.0 0 44 41 40 rain, fog
24 43 12:06 AM 34 12:20 PM 39 +12 26 0 0.27 0.0 0 45 42    
25 45 2:29 PM 34 11:58 PM 40 +13 25 0 0.13 T 0 43 41 34  
26 54 2:06 PM 31 12:53 AM 43 +17 22 0 0.00 0.0 0 42 40 31  
27 48 11:44 AM 30 11:48 PM 39 +13 26 0 0.06 0.0 0 45 42    
28 32 3:13 PM 22 10:07 PM 27 +1 38 0 0.12 T 0 43 41    
29 37 12:19 PM 19 3:39 AM 28 +2 37 0 0.00 0.0 0 39 39 19  
30 26 12:00 AM 13 11:58 PM 20 -6 45 0 0.00 0.0 0 38 37 20  
31 23 2:47 PM 7 7:15 AM 15 -11 50 0 0.00 0.0 0 37 36 7  
Avg/Sum 38.3   27.1   33.0   993 0 1.81 0.0   41.5 40.0    
Highest 54   43   45   50 0 0.58 0.0 0        
Lowest 23   7   15   20 0 0.00 0.0 0        
Normal 36.7   21.2   29.0   1117 0 2.73 6.6          
Departure 1.6   5.9   4.0   -124 0 -0.92 -6.6          
Days ≥ 90 0 Days ≤ 32 24                        
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
Days 90 means # of days with a high temperature of 90° or more, "Days 32" means # of days with a low temperature of 32° or less