Chicago Weather O'Hare Data Saturday, February 28 2015 -- Record Low -10°F for Day, Record-Tying Average 14.6°F for Month

D a t e	Time (cst)	Wind (mph)	Vis. (mi.)	Weather	Sky Cond.	Temperature (ºF)				Relative Humidity	Wind Chill (°F)	Heat Index (°F)	Pressure		Precipitation (in.)
						Air	Dwpt	6 hour					altimeter (in)	sea level (mb)	1 hr	3 hr	6 hr
								Max.

28	23:51	S 6	5.00	Light Snow Fog/Mist	BKN065 OVC090	18	14	20	16	84%	10	NA	30.45	1032.2			0.02
28	22:51	S 7	6.00	Light Snow Fog/Mist	FEW020 BKN040 OVC100	17	13			84%	7	NA	30.47	1033.1	0.01
28	21:51	S 7	3.00	Light Snow Fog/Mist	FEW014 BKN038 BKN050	17	14			88%	7	NA	30.49	1033.8
28	20:51	S 7	2.50	Light Snow	FEW025 OVC038	18	13			81%	9	NA	30.50	1034.5	0.01	0.01
28	19:51	S 9	2.50	Light Snow	OVC038	18	12			77%	7	NA	30.52	1034.9
28	18:51	S 8	10.00	Overcast	BKN055 OVC075	20	4			50%	10	NA	30.53	1035.6
28	17:51	S 7	10.00	Overcast	BKN120 OVC200	19	4	21	17	52%	10	NA	30.52	1035.0
28	16:51	S 7	10.00	Overcast	FEW150 BKN200 OVC250	19	2			47%	10	NA	30.54	1035.8
28	15:51	S 7	10.00	Mostly Cloudy	FEW150 BKN250	19	3			49%	10	NA	30.56	1036.4
28	14:51	SE 8	10.00	A Few Clouds	FEW250	20	-0			41%	10	NA	30.57	1036.9
28	13:51	S 7	10.00	A Few Clouds	FEW250	20	-2			38%	11	NA	30.59	1037.6
28	12:51	SE 7	10.00	A Few Clouds	FEW250	18	1			47%	9	NA	30.63	1038.7
28	11:51	SE 8	10.00	Fair	CLR	17	2	17	-8	51%	7	NA	30.67	1040.1
28	10:51	SE 5	10.00	Fair	CLR	14	-0			53%	6	NA	30.69	1040.9
28	09:51	SE 7	10.00	A Few Clouds	FEW250	10	-1			61%	-1	NA	30.70	1041.4
28	08:51	S 5	10.00	Partly Cloudy	SCT250	4	-2			76%	-6	NA	30.71	1041.8
28	07:51	S 3	10.00	Partly Cloudy	SCT250	-0	-3			87%	NA	NA	30.71	1041.7
28	06:51	Calm	10.00	A Few Clouds	FEW250	-6	-8			91%	NA	NA	30.70	1041.3
28	05:51	S 3	9.00	A Few Clouds	FEW250	-7	-11	2	-10	82%	NA	NA	30.69	1041.1
28	04:51	Calm	9.00	A Few Clouds	FEW250	-8	-13			78%	NA	NA	30.67	1040.6
28	03:51	SW 3	10.00	A Few Clouds	FEW250	-7	-12			79%	NA	NA	30.65	1039.9
28	02:51	Calm	10.00	Fair	CLR	-4	-10			75%	NA	NA	30.65	1039.7
28	01:51	Calm	10.00	Fair	CLR	-5	-9			83%	NA	NA	30.67	1040.3
28	00:51	W 6	10.00	Fair	CLR	2	-6			69%	-9	NA	30.66	1040.0

CHICAGO O'HARE CURRENT AND HISTORY (3-DAY) ... | NWS Chicago Office OBSERVED WEATHER REPORTS

Chicago Weather O'Hare Data Friday, February 27 2015

D a t e	Time (cst)	Wind (mph)	Vis. (mi.)	Weather	Sky Cond.	Temperature (ºF)				Relative Humidity	Wind Chill (°F)	Heat Index (°F)	Pressure		Precipitation (in.)
						Air	Dwpt	6 hour					altimeter (in)	sea level (mb)	1 hr	3 hr	6 hr
								Max.

27	23:51	W 5	10.00	Fair	CLR	1	-6	11	1	72%	-9	NA	30.66	1039.9
27	22:51	SW 3	10.00	Fair	CLR	3	-6			66%	NA	NA	30.65	1039.7
27	21:51	SW 3	10.00	Fair	CLR	4	-6			63%	NA	NA	30.66	1039.9
27	20:51	W 6	10.00	Fair	CLR	5	-7			57%	-6	NA	30.64	1039.4
27	19:51	SW 6	10.00	Fair	CLR	6	-6			57%	-5	NA	30.63	1039.1
27	18:51	SW 8	10.00	A Few Clouds	FEW200	8	-5			55%	-4	NA	30.63	1039.0
27	17:51	SW 8	10.00	A Few Clouds	FEW200	11	-5	14	10	48%	-1	NA	30.60	1038.0
27	16:51	W 8	10.00	Fair	CLR	11	-5			48%	-1	NA	30.59	1037.5
27	15:51	W 10	10.00	Fair	CLR	13	-4			46%	0	NA	30.58	1037.3
27	14:51	W 13	10.00	Fair	CLR	13	-4			46%	-2	NA	30.59	1037.4
27	13:51	W 10	10.00	Fair	CLR	13	-4			46%	0	NA	30.58	1037.3
27	12:51	SW 8	10.00	Fair	CLR	13	-5			44%	2	NA	30.59	1037.5
27	11:51	NW 9	10.00	Fair	CLR	14	-4	14	-1	44%	2	NA	30.60	1038.0
27	10:51	W 14	10.00	Fair	CLR	12	-5			46%	-4	NA	30.60	1037.7
27	09:51	W 8	10.00	Fair	CLR	9	-5			52%	-3	NA	30.58	1037.2
27	08:51	W 7	10.00	Fair	CLR	5	-6			60%	-7	NA	30.57	1036.9
27	07:51	NW 8	10.00	A Few Clouds	FEW040	1	-9			62%	-13	NA	30.55	1036.2
27	06:51	NW 9	10.00	A Few Clouds	FEW040	-0	-10			62%	-15	NA	30.52	1035.3
27	05:51	NW 9	10.00	A Few Clouds	FEW035	-1	-10	5	-2	65%	-16	NA	30.50	1034.6
27	04:51	NW 9	10.00	Fair	CLR	-1	-10			65%	-16	NA	30.48	1033.7
27	03:51	NW 10	10.00	Fair	CLR	2	-8			63%	-13	NA	30.47	1033.3
27	02:51	NW 10	10.00	Fair	CLR	-0	-8			69%	-16	NA	30.45	1032.7
27	01:51	NW 8	10.00	Fair	CLR	-0	-8			69%	-14	NA	30.44	1032.3
27	00:51	NW 8	10.00	Fair	CLR	2	-8			63%	-12	NA	30.43	1031.8

CHICAGO O'HARE CURRENT AND HISTORY (3-DAY) ... | NWS Chicago Office OBSERVED WEATHER REPORTS

Chicago Weather O'Hare Data Thursday, February 26 2015

D a t e	Time (cst)	Wind (mph)	Vis. (mi.)	Weather	Sky Cond.	Temperature (ºF)				Relative Humidity	Wind Chill (°F)	Heat Index (°F)	Pressure		Precipitation (in.)
						Air	Dwpt	6 hour					altimeter (in)	sea level (mb)	1 hr	3 hr	6 hr
								Max.

26	23:51	NW 7	10.00	A Few Clouds	FEW042	1	-8	11	-0	65%	-12	NA	30.42	1031.6
26	22:51	NW 9	10.00	A Few Clouds	FEW042	1	-8			65%	-14	NA	30.41	1031.5
26	21:51	NW 9	10.00	A Few Clouds	FEW042	3	-8			60%	-11	NA	30.41	1031.3
26	20:51	NW 10	10.00	A Few Clouds	FEW042	5	-7			57%	-10	NA	30.40	1030.8
26	19:51	NW 12	10.00	A Few Clouds	FEW045	8	-6			52%	-7	NA	30.38	1030.1
26	18:51	NW 12	10.00	A Few Clouds	FEW045	9	-5			52%	-6	NA	30.36	1029.3
26	17:51	NW 10	10.00	A Few Clouds	FEW045	11	-4	19	10	51%	-2	NA	30.32	1028.1
26	16:51	NW 13	10.00	A Few Clouds	FEW044 FEW150	13	-2			51%	-2	NA	30.30	1027.3
26	15:51	NW 14	10.00	Partly Cloudy	SCT044 SCT180	14	-1			51%	-1	NA	30.28	1026.6
26	14:51	N 16	10.00	Partly Cloudy	FEW042 SCT055 SCT150	18	1			47%	3	NA	30.26	1026.0
26	13:51	N 14	10.00	Mostly Cloudy	SCT042 SCT055 BKN150	18	1			47%	4	NA	30.24	1025.3
26	12:51	N 16	10.00	Mostly Cloudy	FEW027 BKN055 BKN150	18	4			54%	3	NA	30.24	1025.0
26	11:51	N 12	2.00	Light Snow	SCT016 BKN038 BKN200	17	9	17	14	70%	4	NA	30.24	1025.1			0.03
26	10:51	N 14	2.00	Light Snow	BKN018 OVC039	15	9			77%	0	NA	30.23	1024.9	0.01
26	09:51	N 12	1.75	Light Snow	BKN014 OVC026	14	9			80%	0	NA	30.21	1024.1
26	08:51	NE 20	3.00	Light Snow Blowing Snow	FEW024 FEW030 OVC037	16	8			71%	-1	NA	30.19	1023.5	0.02	0.02
26	07:51	NE 18	1.75	Light Snow Blowing Snow	BKN018 OVC037	15	10			80%	-2	NA	30.17	1022.8
26	06:51	NE 12	2.50	Light Snow Blowing Snow	SCT019 BKN029 OVC110	15	9			77%	1	NA	30.14	1021.9
26	05:51	NE 18 G 23	2.00	Light Snow	OVC026	16	11	18	15	80%	-0	NA	30.11	1020.8			0.14
26	04:51	NE 13	1.75	Light Snow Fog/Mist	OVC030	16	12			84%	2	NA	30.08	1019.8	0.01
26	03:51	N 10	1.50	Light Snow Fog/Mist	OVC014	15	12			88%	3	NA	30.06	1018.9	0.03
26	02:51	N 9	0.75	Light Snow Fog/Mist	VV008	15	12			88%	3	NA	30.04	1018.5	0.04	0.10
26	01:51	N 9	1.50	Light Snow Fog/Mist	OVC013	15	12			88%	3	NA	30.04	1018.3	0.04
26	00:51	N 14	1.00	Light Snow Fog/Mist	SCT014 OVC020	17	13			84%	3	NA	30.03	1017.9	0.02

CHICAGO O'HARE CURRENT AND HISTORY (3-DAY) ... | NWS Chicago Office OBSERVED WEATHER REPORTS