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 November 30, Sunday | 21 | -5.0 23 | 754.6 29.71 1006.05 1006.05 | 773.5 30.45 1031.25 1031.25 | 1.3 0.05 1.73 1.73 | 81 | Wind blowing from the west-northwest | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 20–30%. 2/10–3/10. 2 oktas | 1000-1500 3281-4921 | 16.0 9.9 | -7.8 18 | |||||||||||||||||
18 | -2.8 27 | 753.3 29.66 1004.32 1004.32 | 772.0 30.39 1029.25 1029.25 | 2.5 0.1 3.33 3.33 | 69 | Wind blowing from the west-northwest | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 20–30%. 2/10–3/10. 2 oktas | -2.8 27 | -0.6 31 | 1000-1500 3281-4921 | 16.0 9.9 | -7.8 18 | ||||||||||||||||
15 | -0.6 31 | 750.8 29.56 1000.98 1000.98 | 769.5 30.3 1025.92 1025.92 | 3.2 0.13 4.27 4.27 | 67 | Wind blowing from the north-west | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | 600-1000 1968-3281 | 16.0 9.9 | -6.1 21 | ||||||||||||||||||
12 | -1.1 30 | 747.6 29.43 996.72 996.72 | 766.1 30.16 1021.38 1021.38 | 3.2 0.13 4.27 4.27 | 72 | Wind blowing from the north-west | 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 | -2.8 27 | 0.6 33 | 600-1000 1968-3281 | 16.0 9.9 | -5.6 22 | Trace of precipitation Trace of precipitation | 6 | |||||||||||||
09 | -2.2 28 | 744.4 29.31 992.45 992.45 | 762.9 30.04 1017.12 1017.12 | 3.8 0.15 5.07 5.07 | 88 | Wind blowing from the west-northwest | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft) | 100%. 10/10. 8 oktas | Continuous fall of snowflakes, slight at time of observation. | 300-600 984-1968 | 4.0 2.5 | -3.9 25 | Trace of precipitation Trace of precipitation | 3 | |||||||||||||||
06 | -1.7 29 | 740.6 29.16 987.39 987.39 | 759.1 29.89 1012.05 1012.05 | 2.8 0.11 3.73 3.73 | 82 | Wind blowing from the west | 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 | 100%. 10/10. 8 oktas | Continuous fall of snowflakes, slight at time of observation. | -1.7 29 | -0.6 31 | 300-600 984-1968 | 4.8 3.0 | -4.4 24 | 0.5 0.02 | 6 | ||||||||||||
03 | 0.0 32 | 737.8 29.05 983.65 983.65 | 756.2 29.77 1008.18 1008.18 | 0.4 0.02 0.53 0.53 | 85 | Wind blowing from the west | 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. | 200-300 656-984 | 3.2 2.0 | -2.2 28 | 0.5 0.02 | 3 | ||||||||||||||
00 | -0.6 31 | 737.4 29.03 983.12 983.12 | 755.8 29.76 1007.65 1007.65 | -2.5 -0.1 -3.33 -3.33 | 92 | Wind blowing from the south | 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. | -3.9 25 | -0.6 31 | 200-300 656-984 | 1.6 1.0 | -1.7 29 | 4.0 0.16 | 6 | |||||||||||||
| November 29, Saturday | 21 | -1.7 29 | 739.9 29.13 986.45 986.45 | 758.3 29.85 1010.98 1010.98 | -3.2 -0.13 -4.27 -4.27 | 92 | Wind blowing from the south-southeast | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | Continuous fall of snowflakes, slight at time of observation. | 200-300 656-984 | 1.2 0.8 | -2.8 27 | 2.0 0.08 | 3 | |||||||||||||||