Weather Observations for Champaign-Urbana, Illinois
Illinois State Water Survey, Prairie Research Institute, University of Illinois
August 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	84	1:34 PM	63	5:30 AM	74	0	0	9	0.00	0.0	0	78	77
2	90	4:08 PM	65	4:12 AM	78	+4	0	13	0.00	0.0	0	78	77
3	85	1:44 PM	65	11:56 PM	75	+1	0	10	0.00	0.0	0	80	78	75
4	81	1:25 PM	58	4:18 AM	70	-4	0	5	0.00	0.0	0	77	76	58
5	83	3:36 PM	62	4:38 AM	73	-1	0	8	0.00	0.0	0	77	76	62
6	82	2:03 PM	62	11:58 PM	72	-2	0	7	0.13	0.0	0	79	77	65	rain
7	83	4:05 PM	58	4:29 AM	71	-3	0	6	0.00	0.0	0	76	76	58
8	86	1:13 PM	63	4:26 AM	75	+1	0	10	0.00	0.0	0	77	76
9	83	3:28 PM	70	2:03 AM	77	+3	0	12	0.09	0.0	0	79	77		rain
10	84	3:50 PM	70	11:57 PM	77	+3	0	12	1.04	0.0	0	80	77	71	rain, fog, thunder
11	83	2:41 PM	64	11:59 PM	74	0	0	9	0.00	0.0	0	79	77	67	fog
12	82	1:27 PM	60	4:55 AM	71	-3	0	6	0.00	0.0	0	78	77	60
13	84	2:36 PM	60	5:13 AM	72	-2	0	7	0.00	0.0	0	77	76	60
14	87	1:07 PM	65	5:49 AM	76	+2	0	11	0.00	0.0	0	78	76	65
15	90	3:40 PM	67	4:34 AM	79	+5	0	14	0.00	0.0	0	79	77	67
16	89	3:22 PM	67	4:43 AM	78	+4	0	13	0.00	0.0	0	80	78	67	fog
17	88	1:03 PM	65	5:00 AM	77	+3	0	12	0.00	0.0	0	80	78	65
18	86	2:14 PM	67	5:19 AM	77	+3	0	12	0.57	0.0	0	80	78	67	thunderstorms
19	78	12:52 PM	58	11:53 PM	68	-6	0	3	1.28	0.0	0	78	77	66	thunderstorms, rain
20	77	2:17 PM	54	5:21 AM	66	-7	0	1	0.01	0.0	0	75	74	54	rain
21	82	3:32 PM	53	5:39 AM	68	-5	0	3	0.00	0.0	0	73	73	53
22	80	2:54 PM	56	5:10 AM	68	-5	0	3	0.00	0.0	0	74	73	56
23	77	3:03 PM	58	11:58 PM	68	-5	0	3	0.00	0.0	0	76	74		fog
24	76	3:09 PM	53	5:34 AM	65	-8	0	0	0.00	0.0	0	72	72	53	fog
25	74	2:23 PM	52	5:27 AM	63	-10	2	0	0.00	0.0	0	72	71	52
26	71	11:35 AM	57	11:59 PM	64	-9	1	0	0.00	0.0	0	73	72	60
27	78	2:06 PM	53	4:37 AM	66	-7	0	1	0.00	0.0	0	71	71	53
28	80	12:40 PM	57	4:47 AM	69	-3	0	4	0.00	0.0	0	72	72	57
29	81	11:41 AM	63	12:45 AM	72	0	0	7	0.02	0.0	0	74	72	63	rain
30	86	2:32 PM	63	5:56 AM	75	+3	0	10	0.02	0.0	0	75	73	63	rain, fog
31	88	3:37 PM	65	5:30 AM	77	+5	0	12	0.00	0.0	0	76	74	65	fog
Avg/Sum	82.5		61.1		72.1		3	223	3.16	0.0	0	76.5	75.2
Highest	90		70		79		2	14	1.28	0.0	0
Lowest	71		52		63		0	0	0.00	0.0	0
Normal	83.7		63.1		73.4		5	265	3.93	0.0
Departure	-1.2		-2.0		-1.3		-2	-42	-0.77	0.0
Days ≥ 90	2	Days ≤ 32	0
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