Weather archive in Chicago / O'Hare (airport)
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| 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 December 8, Monday | 12 | -5.0 23 | 752.1 29.61 1002.72 1002.72 | 770.9 30.35 1027.78 1027.78 | -1.0 -0.04 -1.33 -1.33 | 50 | Wind blowing from the south-southeast | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | -8.3 17 | -5.0 23 | 600-1000 1968-3281 | 16.0 9.9 | -13.9 7 | |||||||||||||||
09 | -6.7 20 | 753.1 29.65 1004.05 1004.05 | 772.1 30.4 1029.38 1029.38 | 0.6 0.02 0.8 0.8 | 68 | Wind blowing from the south | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | 600-1000 1968-3281 | 16.0 9.9 | -11.7 11 | ||||||||||||||||||
06 | -7.8 18 | 752.5 29.63 1003.25 1003.25 | 771.6 30.38 1028.72 1028.72 | 0.2 0.01 0.27 0.27 | 74 | Wind blowing from the north-west | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | -8.9 16 | 600-1000 1968-3281 | 16.0 9.9 | -11.7 11 | Trace of precipitation Trace of precipitation | 6 | |||||||||||||||
03 | -8.3 17 | 752.3 29.62 1002.98 1002.98 | 771.3 30.37 1028.32 1028.32 | 0.2 0.01 0.27 0.27 | 77 | Wind blowing from the north-northwest | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 100%. 10/10. 8 oktas | 600-1000 1968-3281 | 16.0 9.9 | -11.7 11 | Trace of precipitation Trace of precipitation | 3 | ||||||||||||||||
00 | -8.3 17 | 752.1 29.61 1002.72 1002.72 | 770.8 30.35 1027.65 1027.65 | 0.5 0.02 0.67 0.67 | 70 | Wind blowing from the north | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 100%. 10/10. 8 oktas | Continuous fall of snowflakes, slight at time of observation. | -8.9 16 | -1.1 30 | 600-1000 1968-3281 | 16.0 9.9 | -12.8 9 | Trace of precipitation Trace of precipitation | 6 | |||||||||||||
| December 7, Sunday | 21 | -8.3 17 | 751.6 29.59 1002.05 1002.05 | 770.5 30.33 1027.25 1027.25 | 1.0 0.04 1.33 1.33 | 68 | Wind blowing from the north-northwest | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | 1000-1500 3281-4921 | 16.0 9.9 | -13.3 8 | |||||||||||||||||
18 | -7.2 19 | 750.6 29.55 1000.72 1000.72 | 769.4 30.29 1025.78 1025.78 | 1.3 0.05 1.73 1.73 | 59 | Wind blowing from the north | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | -7.8 18 | -1.7 29 | 600-1000 1968-3281 | 16.0 9.9 | -13.9 7 | ||||||||||||||||
15 | -6.7 20 | 749.3 29.5 998.98 998.98 | 768.1 30.24 1024.05 1024.05 | 1.3 0.05 1.73 1.73 | 62 | Wind blowing from the north | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft) | 50%. 5/10. 4 oktas | 600-1000 1968-3281 | 16.0 9.9 | -12.8 9 | ||||||||||||||||||
12 | -3.3 26 | 748.0 29.45 997.25 997.25 | 766.6 30.18 1022.05 1022.05 | 1.9 0.07 2.53 2.53 | 78 | Wind blowing from the north | Moderate breeze (7 m/s) (25 km/h) (16 miles/hour) (14 knots) (4 Bft) | 100%. 10/10. 8 oktas | -3.9 25 | -1.1 30 | 300-600 984-1968 | 12.0 7.5 | -6.7 20 | 1.0 0.04 | 6 | ||||||||||||||