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
2025 November 10, Monday	06	-3.9 25	748.8 29.48 998.32 998.32	767.5 30.22 1023.25 1023.25	1.2 0.05 1.6 1.6	81	Wind blowing from the north	Moderate breeze (7 m/s) (25 km/h) (16 miles/hour) (14 knots) (4 Bft)	12 m/s 43 km/h 27 miles/hour 23 knots 6 Bft		70 – 80%. 7/10 – 8/10. 6 oktas	Continuous fall of snowflakes, slight at time of observation.			-3.9 25				600-1000 1968-3281			16.0 9.9	-6.7 20	0.5 0.02	6
	03	-3.9 25	747.6 29.43 996.72 996.72	766.1 30.16 1021.38 1021.38	0.3 0.01 0.4 0.4	88	Wind blowing from the north-northwest	Fresh breeze (10 m/s) (36 km/h) (22 mph) (19 knots) (5 Bft)	15 m/s 54 km/h 34 mph 29 knots 7 Bft		100%. 10/10. 8 oktas	Continuous fall of snowflakes, slight at time of observation.							300-600 984-1968			2.4 1.5	-5.6 22	Trace of precipitation Trace of precipitation	3
	00	-2.2 28	747.3 29.42 996.32 996.32	765.8 30.15 1020.98 1020.98	-1.3 -0.05 -1.73 -1.73	63	Wind blowing from the north-west	Fresh breeze (9 m/s) (32 km/h) (20 miles/hour) (17 knots) (5 Bft)	14 m/s 50 km/h 31 mile/hour 27 knots 7 Bft		100%. 10/10. 8 oktas	Continuous fall of snowflakes, slight at time of observation.			-3.3 26	3.9 39			300-600 984-1968			16.0 9.9	-8.3 17	0.5 0.02	6
November 9, Sunday	21	-3.3 26	748.6 29.47 998.05 998.05	767.3 30.21 1022.98 1022.98	0.0 0 0 0	84	Wind blowing from the north-west	Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft)	11 m/s 40 km/h 25 miles/hour 21 mile/hour 6 Bft			Continuous fall of snowflakes, slight at time of observation.							300-600 984-1968			1.2 0.8	-5.6 22	0.5 0.02	3
	18	-1.1 30	748.6 29.47 998.05 998.05	767.2 30.2 1022.85 1022.85	1.5 0.06 2 2	49	Wind blowing from the north-west	Fresh breeze (8 m/s) (29 km/h) (18 miles/hour) (16 knots) (5 Bft)	12 m/s 43 km/h 27 miles/hour 23 knots 6 Bft		70 – 80%. 7/10 – 8/10. 6 oktas				-1.1 30	2.2 36			1500-2000 4921-6562			16.0 9.9	-10.6 13	Trace of precipitation Trace of precipitation	6
	15	1.7 35	747.1 29.41 996.05 996.05	765.4 30.13 1020.45 1020.45	1.0 0.04 1.33 1.33	52	Wind blowing from the north-west	Fresh breeze (8 m/s) (29 km/h) (18 miles/hour) (16 knots) (5 Bft)	12 m/s 43 km/h 27 miles/hour 23 knots 6 Bft		70 – 80%. 7/10 – 8/10. 6 oktas								1000-1500 3281-4921			16.0 9.9	-7.2 19	Trace of precipitation Trace of precipitation	3
	12	0.0 32	746.1 29.37 994.72 994.72	764.5 30.1 1019.25 1019.25	1.3 0.05 1.73 1.73	69	Wind blowing from the north-northwest	Fresh breeze (9 m/s) (32 km/h) (20 miles/hour) (17 knots) (5 Bft)	13 m/s 47 km/h 29 miles/hour 25 knots 6 Bft		100%. 10/10. 8 oktas	Continuous fall of snowflakes, slight at time of observation.			-0.6 31	3.9 39			600-1000 1968-3281			11.0 6.8	-5.0 23	Trace of precipitation Trace of precipitation	6
	09	0.0 32	744.8 29.32 992.99 992.99	763.3 30.05 1017.65 1017.65	1.7 0.07 2.27 2.27	75	Wind blowing from the north-northwest	Moderate breeze (7 m/s) (25 km/h) (16 miles/hour) (14 knots) (4 Bft)	11 m/s 40 km/h 25 miles/hour 21 mile/hour 6 Bft		100%. 10/10. 8 oktas	Continuous fall of snowflakes, slight at time of observation.							1000-1500 3281-4921			11.0 6.8	-3.9 25	Trace of precipitation Trace of precipitation	3
	06	0.0 32	743.1 29.26 990.72 990.72	761.3 29.97 1014.98 1014.98	2.0 0.08 2.67 2.67	92	Wind blowing from the north-northwest	Fresh breeze (9 m/s) (32 km/h) (20 miles/hour) (17 knots) (5 Bft)	14 m/s 50 km/h 31 mile/hour 27 knots 7 Bft		100%. 10/10. 8 oktas	Continuous fall of snowflakes, slight at time of observation.			0.0 32	8.9 48			200-300 656-984			4.0 2.5	-1.1 30	0.8 0.03	6