Weather Observations for Champaign-Urbana, Illinois
Illinois State Water Survey, Prairie Research Institute, University of Illinois
January 2015
  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 32 2:15 PM 15 12:44 AM 24 -2 41 0 0.00 0.0 0 36 35 15  
2 39 1:55 PM 21 5:34 AM 30 +5 35 0 0.00 0.0 0 37 35 21  
3 40 2:11 PM 32 12:25 AM 36 +11 29 0 0.37 0.0 0 38 35 32 rain
4 34 12:00 AM 8 11:58 PM 21 -4 44 0 0.31 0.0 0 38 35   rain
5 13 11:13 PM 1 7:14 AM 7 -18 58 0 0.02 0.2 0 39 35 1 snow
6 13 6:05 AM 8 6:24 AM 11 -14 54 0 0.21 3.1 3 41 35 11 snow
7 12 12:00 AM -7 11:58 PM 3 -22 62 0 0.01 T 3 35 35 1 snow
8 24 10:28 PM -8 3:49 AM 8 -17 57 0 0.00 0.0 3 34 34 -8  
9 16 12:00 AM 0 11:37 PM 8 -17 57 0 T T 2 35 34 5 snow, blowing snow
10 23 3:00 PM -7 6:24 AM 8 -17 57 0 0.00 0.0 2 34 34 -7  
11 32 1:57 PM 23 12:00 AM 28 +3 37 0 0.00 0.0 2 35 34 23  
12 32 3:42 AM 11 11:57 PM 22 -3 43 0 0.34 0.7 3 35 34 28 rain, freezing rain, snow, fog
13 16 2:05 PM 5 11:54 PM 11 -14 54 0 0.00 0.0 3 35 34 7  
14 19 7:45 PM -1 4:29 AM 9 -16 56 0 0.00 0.0 3 35 34 -1  
15 37 3:54 PM 9 1:15 AM 23 -2 42 0 0.00 0.0 2 35 34 9  
16 38 1:42 PM 21 7:16 AM 30 +5 35 0 0.00 0.0 2 35 34 21  
17 47 2:17 PM 30 3:40 AM 39 +14 26 0 0.00 0.0 1 35 34 30  
18 44 1:44 PM 26 11:49 PM 35 +10 30 0 0.00 0.0 T 35 34    
19 44 1:37 PM 24 7:05 AM 34 +9 31 0 0.00 0.0 T 35 34 24  
20 44 12:59 PM 29 6:56 AM 37 +12 28 0 T 0.0 T 35 34 29  
21 37 9:34 AM 28 5:54 AM 33 +8 32 0 0.00 0.0 T 35 34 28  
22 37 11:06 AM 31 7:50 AM 34 +9 31 0 T T T 36 35 31 snow flurries
23 32 2:37 PM 24 9:43 PM 28 +3 37 0 0.00 0.0 T 37 36 30  
24 46 3:13 PM 25 2:26 AM 36 +11 29 0 0.00 0.0 T 36 35 25  
25 37 12:34 PM 27 11:40 PM 32 +7 33 0 0.02 0.0 T 37 36   rain
26 29 10:12 PM 23 7:19 AM 26 +1 39 0 0.11 T T 36 36 23 rain, snow
27 31 4:13 AM 19 11:59 PM 25 0 40 0 0.04 0.4 T 37 36 29 snow, rain, freezing rain/drizzle
28 37 3:18 PM 18 3:32 AM 28 +3 37 0 0.00 0.0 T 36 36 18  
29 41 6:03 AM 33 10:59 PM 37 +12 28 0 0.00 0.0 0 37 35 34  
30 33 1:23 PM 22 11:21 PM 28 +3 37 0 T 0.0 0 36 36 24 rain
31 39 12:43 PM 22 12:13 AM 31 +6 34 0 0.00 0.0 0 36 35 22  
Avg/Sum 32.2   16.5   24.6   1253 0 1.43 4.4   36.0 34.7    
Highest 47   33   39   62 0 0.37 3.1 3        
Lowest 12   -8   3   26 0 0.00 0.0 0        
Normal 32.9   16.7   24.8   1246 0 2.05 6.8          
Departure -0.7   -0.2   -0.2   7 0 -0.62 -2.4          
Days ≥ 90 0 Days ≤ 32 30                        
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