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 | |
| 2026 October 1, Thursday | 04 | 18.3 65 | 740.3 29.15 986.99 986.99 | 757.9 29.84 1010.45 1010.45 | -0.8 -0.03 -1.07 -1.07 | 93 | Calm, no wind | Calm | 100%. 10/10. 8 oktas | 2000-2500 6562-8202 | 14.0 8.7 | 17.2 63 | 0.3 0.01 | 3 | |||||||||||||||
01 | 17.8 64 | 741.1 29.18 988.05 988.05 | 758.7 29.87 1011.52 1011.52 | 0.0 0 0 0 | 93 | Calm, no wind | Calm | 100%. 10/10. 8 oktas | Rain, not freezing, continuous, slight at time of observation. | 15.6 60 | 18.3 65 | 2000-2500 6562-8202 | 16.0 9.9 | 16.7 62 | 0.5 0.02 | 6 | |||||||||||||
| September 30, Wednesday | 22 | 17.8 64 | 741.1 29.18 988.05 988.05 | 758.8 29.87 1011.65 1011.65 | 0.3 0.01 0.4 0.4 | 93 | Calm, no wind | Calm | 100%. 10/10. 8 oktas | 600-1000 1968-3281 | 16.0 9.9 | 16.7 62 | 0.5 0.02 | 3 | |||||||||||||||
19 | 17.8 64 | 740.8 29.17 987.65 987.65 | 758.5 29.86 1011.25 1011.25 | 0.2 0.01 0.27 0.27 | 96 | Wind blowing from the south | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 100%. 10/10. 8 oktas | Rain, not freezing, continuous, slight at time of observation. | 15.6 60 | 18.3 65 | 200-300 656-984 | 9.0 5.6 | 17.2 63 | 2.0 0.08 | 6 | |||||||||||||
16 | 17.8 64 | 740.6 29.16 987.39 987.39 | 758.1 29.85 1010.72 1010.72 | -1.0 -0.04 -1.33 -1.33 | 96 | Wind blowing from the south-southwest | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 100%. 10/10. 8 oktas | Rain, not freezing, continuous, slight at time of observation. | 200-300 656-984 | 9.0 5.6 | 17.2 63 | 0.3 0.01 | 3 | |||||||||||||||
13 | 16.7 62 | 741.6 29.2 988.72 988.72 | 759.2 29.89 1012.18 1012.18 | -1.0 -0.04 -1.33 -1.33 | 93 | Wind blowing from the south-southwest | 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. | 15.6 60 | 21.1 70 | 200-300 656-984 | 6.0 3.7 | 15.6 60 | 16.0 0.63 | 6 | |||||||||||||
10 | 16.7 62 | 742.6 29.24 990.05 990.05 | 760.1 29.93 1013.38 1013.38 | 0.3 0.01 0.4 0.4 | 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, moderate at time of observation. | 100-200 328-656 | 2.8 1.7 | 16.1 61 | 10.0 0.39 | 3 | |||||||||||||||
07 | 18.3 65 | 742.3 29.22 989.65 989.65 | 759.9 29.92 1013.12 1013.12 | 0.9 0.04 1.2 1.2 | 68 | Wind blowing from the south-west | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 100%. 10/10. 8 oktas | Rain, not freezing, continuous, slight at time of observation. | 18.3 65 | 25.6 78 | 2000-2500 6562-8202 | 16.0 9.9 | 12.2 54 | Trace of precipitation Trace of precipitation | 6 | |||||||||||||
04 | 20.0 68 | 741.4 29.19 988.45 988.45 | 758.8 29.87 1011.65 1011.65 | -0.4 -0.02 -0.53 -0.53 | 55 | 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 | 1500-2000 4921-6562 | 16.0 9.9 | 10.6 51 | Trace of precipitation Trace of precipitation | 3 | ||||||||||||||||