Weather Observations for Champaign-Urbana, Illinois
Illinois State Water Survey, Prairie Research Institute, University of Illinois
July 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	76	2:46 PM	61	11:59 PM	69	-6	0	4	0.00	0.0	0	76	74	63
2	76	1:45 PM	58	4:45 AM	67	-8	0	2	0.01	0.0	0	74	73	58
3	76	3:02 PM	62	11:59 PM	69	-6	0	4	0.00	0.0	0	75	74
4	80	4:49 PM	58	4:06 AM	69	-6	0	4	0.00	0.0	0	73	72	58	fog
5	83	2:25 PM	59	4:32 AM	71	-4	0	6	0.00	0.0	0	74	73	59
6	88	2:12 PM	62	4:18 AM	75	0	0	10	0.00	0.0	0	75	74	62	fog
7	75	12:02 AM	56	11:56 PM	66	-9	0	1	1.43	0.0	0	79	76	71	rain, fog
8	71	11:34 PM	56	6:12 AM	64	-11	1	0	0.10	0.0	0	73	73	56	rain, fog
9	67	5:06 PM	60	4:32 AM	64	-11	1	0	1.02	0.0	0	72	71	60	rain, fog
10	78	3:25 PM	62	3:06 AM	70	-5	0	5	0.02	0.0	0	72	71	62	rain, fog
11	81	1:14 PM	61	4:24 AM	71	-4	0	6	0.03	0.0	0	73	72	61	rain, thunder, fog
12	86	3:58 PM	70	2:30 AM	78	+3	0	13	0.22	0.0	0	77	74	70	rain, fog
13	91	3:10 PM	71	4:47 AM	81	+6	0	16	0.00	0.0	0	79	76	71	fog
14	87	2:10 PM	64	11:59 PM	76	+1	0	11	0.00	0.0	0	80	77	70
15	80	3:47 PM	60	4:49 AM	70	-5	0	5	0.00	0.0	0	78	77	60
16	83	2:40 PM	65	4:25 AM	74	-1	0	9	0.00	0.0	0	78	77	65
17	90	2:33 PM	72	11:57 PM	81	+6	0	16	0.01	0.0	0	79	77	73	rain, fog
18	91	11:35 AM	70	1:01 AM	81	+6	0	16	0.00	0.0	0	81	79	70	fog
19	85	4:09 PM	70	11:59 PM	78	+3	0	13	0.01	0.0	0	82	80		rain
20	85	2:25 PM	68	11:31 PM	77	+2	0	12	0.02	0.0	0	80	78	69	rain, fog
21	82	2:05 PM	64	11:51 PM	73	-2	0	8	0.36	0.0	0	79	77	68	rain, thunder, fog
22	82	3:10 PM	59	5:06 AM	71	-4	0	6	0.00	0.0	0	76	76	59
23	83	3:17 PM	62	5:01 AM	73	-2	0	8	0.00	0.0	0	76	76	62
24	84	3:04 PM	62	4:00 AM	73	-2	0	8	0.00	0.0	0	76	76	62
25	87	4:04 PM	65	4:10 AM	76	+1	0	11	0.00	0.0	0	77	76	65
26	84	2:56 PM	70	11:58 PM	77	+3	0	12	0.09	0.0	0	79	77		fog, thunderstorm
27	86	3:09 PM	68	3:36 AM	77	+3	0	12	0.00	0.0	0	79	77	68	fog
28	92	1:38 PM	71	4:48 AM	82	+8	0	17	0.00	0.0	0	80	78	71	fog
29	87	12:46 PM	68	11:56 PM	78	+4	0	13	0.90	0.0	0	81	79	72	thunderstorms, fog
30	86	2:54 PM	63	4:30 AM	75	+1	0	10	0.00	0.0	0	78	78	63
31	88	1:24 PM	66	5:21 AM	77	+3	0	12	0.00	0.0	0	79	78
Avg/Sum	82.9		64.0		73.6		2	270	4.22	0.0	0	77.1	75.7
Highest	92		72		82		1	17	1.43	0.0	0
Lowest	67		56		64		0	0	0.00	0.0	0
Normal	85.0		64.9		75.0		1	309	4.70	0.0
Departure	-2.1		-0.9		-1.3		1	-39	-0.48	0.0
Days ≥ 90	4	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