Weather archive in Chicago / O'Hare (airport)

To receive explanations, hover over the appropriate heading

Date / Local time		T	Po	P	Pa	U	DD	Ff	ff10	ff3	N	WW	W1	W2	Tn	Tx	Cl	Nh	H	Cm	Ch	VV	Td	RRR	tR	E	Tg	E'	sss
2024 December 28, Saturday	18	7.8 46	743.3 29.26 990.99 990.99	761.3 29.97 1014.98 1014.98	0.2 0.01 0.27 0.27	83	Calm, no wind	Calm			70 – 80%. 7/10 – 8/10. 6 oktas				7.8 46	10.6 51			2500 or more, or no clouds. 8202 or more, or no clouds.			16.0 9.9	5.0 41
	15	10.6 51	743.1 29.26 990.72 990.72	760.9 29.96 1014.45 1014.45	0.5 0.02 0.67 0.67	74	Wind blowing from the south-southwest	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas								600-1000 1968-3281			16.0 9.9	6.1 43
	12	10.0 50	742.6 29.24 990.05 990.05	760.6 29.94 1014.05 1014.05	0.5 0.02 0.67 0.67	71	Wind blowing from the west-southwest	Moderate breeze (7 m/s) (25 km/h) (16 miles/hour) (14 knots) (4 Bft)	10 m/s 36 km/h 22 mph 19 knots 5 Bft		70 – 80%. 7/10 – 8/10. 6 oktas				8.3 47	10.6 51			600-1000 1968-3281			16.0 9.9	5.0 41
	09	8.3 47	742.1 29.22 989.39 989.39	760.2 29.93 1013.52 1013.52	2.8 0.11 3.73 3.73	83	Wind blowing from the west-southwest	Fresh breeze (8 m/s) (29 km/h) (18 miles/hour) (16 knots) (5 Bft)	15 m/s 54 km/h 34 mph 29 knots 7 Bft		100%. 10/10. 8 oktas								300-600 984-1968			16.0 9.9	5.6 42
	06	9.4 49	739.3 29.11 985.65 985.65	757.3 29.81 1009.65 1009.65	1.7 0.07 2.27 2.27	83	Wind blowing from the south-west	Fresh breeze (8 m/s) (29 km/h) (18 miles/hour) (16 knots) (5 Bft)	13 m/s 47 km/h 29 miles/hour 25 knots 6 Bft		100%. 10/10. 8 oktas				9.4 49	11.1 52			300-600 984-1968			16.0 9.9	6.7 44	Trace of precipitation Trace of precipitation	6
	03	10.0 50	737.6 29.04 983.39 983.39	755.4 29.74 1007.12 1007.12	2.0 0.08 2.67 2.67	89	Wind blowing from the south-west	Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft)			100%. 10/10. 8 oktas	Rain, not freezing, continuous, slight at time of observation.							200-300 656-984			16.0 9.9	8.3 47	Trace of precipitation Trace of precipitation	3
	00	10.6 51	735.6 28.96 980.72 980.72	753.4 29.66 1004.45 1004.45	0.0 0 0 0	89	Wind blowing from the south-southwest	Strong breeze (11 m/s) (40 km/h) (25 miles/hour) (21 mile/hour) (6 Bft)	16 m/s 58 km/h 36 miles/hour 31 mile/hour 7 Bft		100%. 10/10. 8 oktas	Rain, not freezing, continuous, slight at time of observation.			7.2 45	11.1 52			200-300 656-984			9.0 5.6	8.9 48	4.0 0.16	6
December 27, Friday	21	10.6 51	735.6 28.96 980.72 980.72	753.6 29.67 1004.72 1004.72	-1.0 -0.04 -1.33 -1.33	96	Wind blowing from the south	Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft)			100%. 10/10. 8 oktas	Rain, not freezing, continuous, slight at time of observation.							100-200 328-656			6.0 3.7	10.0 50	2.0 0.08	3
December 27, Friday	18	10.0 50	736.6 29 982.05 982.05	754.6 29.71 1006.05 1006.05	-1.2 -0.05 -1.6 -1.6	96	Wind blowing from the south-east	Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft)			100%. 10/10. 8 oktas	Rain, not freezing, continuous, slight at time of observation.			7.2 45	10.0 50			100-200 328-656			4.0 2.5	9.4 49	2.0 0.08	6