Weather Observations for Champaign-Urbana, Illinois
Illinois State Water Survey, Prairie Research Institute, University of Illinois
September 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	87	2:11 PM	67	3:33 AM	77	+5	0	12	0.18	0.0	0	78	75	67	thunderstorms, fog
2	91	2:31 PM	68	4:42 AM	80	+9	0	15	0.48	0.0	0	77	75	68	thunderstorms, fog
3	92	3:06 PM	67	5:31 AM	80	+9	0	15	0.02	0.0	0	78	76	67	rain, fog
4	93	2:46 PM	67	4:51 AM	80	+9	0	15	0.00	0.0	0	79	77	67	fog
5	90	3:01 PM	66	2:02 AM	78	+8	0	13	1.18	0.0	0	79	77	66	thunderstorms
6	94	2:10 PM	67	5:33 AM	81	+11	0	16	0.00	0.0	0	79	77	67	fog
7	93	1:25 PM	67	4:35 AM	80	+10	0	15	0.00	0.0	0	80	77	67
8	89	11:30 AM	68	6:04 PM	79	+10	0	14	0.00	0.0	0	80	78	68
9	79	2:17 PM	64	11:59 PM	72	+3	0	7	1.07	0.0	0	78	76	68	rain, thunder, fog
10	84	2:04 PM	58	5:29 AM	71	+2	0	6	0.00	0.0	0	76	75	58
11	71	1:04 PM	55	11:36 PM	63	-5	2	0	0.44	0.0	0	75	74	61	rain, fog
12	65	2:18 PM	49	11:57 PM	57	-11	8	0	0.07	0.0	0	72	71		rain
13	72	3:48 PM	46	5:21 AM	59	-9	6	0	T	0.0	0	68	69	46	rain
14	81	2:13 PM	47	5:32 AM	64	-3	1	0	0.00	0.0	0	69	69	47
15	83	2:18 PM	54	6:01 AM	69	+2	0	4	0.00	0.0	0	71	70	54
16	84	1:30 PM	52	5:55 AM	68	+2	0	3	0.00	0.0	0	70	70	52
17	85	12:57 PM	56	5:49 AM	71	+5	0	6	0.00	0.0	0	71	70	56
18	82	11:52 AM	68	8:49 AM	75	+10	0	10	1.56	0.0	0	74	71	68	thunderstorms, fog
19	71	1:36 PM	52	11:58 PM	62	-3	3	0	1.41	0.0	0	74	72		thunderstorms, rain, fog
20	73	1:53 PM	48	5:44 AM	61	-4	4	0	0.00	0.0	0	69	69	48
21	77	2:56 PM	50	3:56 AM	64	0	1	0	0.00	0.0	0	69	69	50
22	81	2:49 PM	50	5:28 AM	66	+2	0	1	0.00	0.0	0	68	68	50
23	85	2:47 PM	55	3:49 AM	70	+7	0	5	0.00	0.0	0	69	69	55
24	83	2:07 PM	56	5:59 AM	70	+7	0	5	0.00	0.0	0	70	69	56
25	83	1:08 PM	56	6:23 AM	70	+8	0	5	0.00	0.0	0	71	69	56
26	80	1:24 PM	58	5:09 AM	69	+7	0	4	0.00	0.0	0	70	69	58
27	77	1:57 PM	60	1:16 AM	69	+8	0	4	0.00	0.0	0	72	70	60
28	81	2:55 PM	61	6:13 AM	71	+10	0	6	0.03	0.0	0	72	70	61	rain, fog
29	72	11:42 AM	58	11:55 PM	65	+4	0	0	0.00	0.0	0	73	71	62	fog
30	69	2:44 PM	50	11:57 PM	60	0	5	0	0.00	0.0	0	69	68	51
Avg/Sum	81.6		58.0		70.0		30	181	6.44	0.0	0	73.3	72.0
Highest	94		68		81		8	16	1.56	0.0	0
Lowest	65		46		57		0	0	0.00	0.0	0
Normal	78.2		54.2		66.2		79	115	3.13	0.0
Departure	3.4		3.8		3.8		-49	66	3.31	0.0
Days ≥ 90	6	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