Weather archive in Washington / Dulles (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 July 9, Thursday | 20 | 24.4 76 | 749.8 29.52 999.65 999.65 | 758.0 29.84 1010.58 1010.58 | -0.3 -0.01 -0.4 -0.4 | 88 | Wind blowing from the west | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | 22.8 73 | 30.6 87 | 2000-2500 6562-8202 | 16.0 9.9 | 22.2 72 | 37.0 1.46 | 6 | |||||||||||||
17 | 22.8 73 | 750.1 29.53 1000.05 1000.05 | 758.1 29.85 1010.72 1010.72 | -0.3 -0.01 -0.4 -0.4 | 96 | Wind blowing from the south-southwest | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 100%. 10/10. 8 oktas | Rain, not freezing, continuous, moderate at time of observation. | 100-200 328-656 | 3.2 2.0 | 22.2 72 | 29.0 1.14 | 3 | |||||||||||||||
14 | 29.4 85 | 750.4 29.54 1000.45 1000.45 | 758.4 29.86 1011.12 1011.12 | -1.7 -0.07 -2.27 -2.27 | 72 | 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 | 24.4 76 | 30.0 86 | 600-1000 1968-3281 | 16.0 9.9 | 23.9 75 | ||||||||||||||||
11 | 26.1 79 | 752.1 29.61 1002.72 1002.72 | 760.3 29.93 1013.65 1013.65 | -0.2 -0.01 -0.27 -0.27 | 85 | 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 | 300-600 984-1968 | 16.0 9.9 | 23.3 74 | ||||||||||||||||||
08 | 24.4 76 | 752.3 29.62 1002.98 1002.98 | 760.6 29.94 1014.05 1014.05 | 0.0 0 0 0 | 91 | Wind blowing from the south-southwest | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 100%. 10/10. 8 oktas | 23.9 75 | 27.8 82 | 200-300 656-984 | 16.0 9.9 | 22.8 73 | ||||||||||||||||
05 | 23.9 75 | 752.3 29.62 1002.98 1002.98 | 760.6 29.94 1014.05 1014.05 | -0.5 -0.02 -0.67 -0.67 | 90 | 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 | 300-600 984-1968 | 16.0 9.9 | 22.2 72 | ||||||||||||||||||
02 | 23.9 75 | 752.8 29.64 1003.65 1003.65 | 761.0 29.96 1014.58 1014.58 | -0.8 -0.03 -1.07 -1.07 | 90 | 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 | 21.7 71 | 26.1 79 | 300-600 984-1968 | 16.0 9.9 | 22.2 72 | ||||||||||||||||
| July 8, Wednesday | 23 | 24.4 76 | 753.6 29.67 1004.72 1004.72 | 761.6 29.98 1015.38 1015.38 | 0.2 0.01 0.27 0.27 | 85 | Wind blowing from the south | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 50%. 5/10. 4 oktas | 2500 or more, or no clouds. 8202 or more, or no clouds. | 16.0 9.9 | 21.7 71 | |||||||||||||||||
20 | 26.1 79 | 753.4 29.66 1004.45 1004.45 | 761.4 29.98 1015.12 1015.12 | -0.2 -0.01 -0.27 -0.27 | 79 | Wind blowing from the south-east | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | 21.7 71 | 27.8 82 | 1000-1500 3281-4921 | 16.0 9.9 | 22.2 72 | ||||||||||||||||
