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 | |
| 2025 December 16, Tuesday | 13 | 2.8 37 | 758.6 29.87 1011.38 1011.38 | 767.4 30.21 1023.12 1023.12 | -1.8 -0.07 -2.4 -2.4 | 33 | Wind blowing from the north-northeast | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 50%. 5/10. 4 oktas | -10.6 13 | 3.3 38 | 2500 or more, or no clouds. 8202 or more, or no clouds. | 16.0 9.9 | -12.2 10 | |||||||||||||||
10 | -2.2 28 | 760.4 29.94 1013.78 1013.78 | 769.0 30.28 1025.25 1025.25 | 1.3 0.05 1.73 1.73 | 53 | Wind blowing from the north-northwest | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 20–30%. 2/10–3/10. 2 oktas | 2500 or more, or no clouds. 8202 or more, or no clouds. | 16.0 9.9 | -10.6 13 | ||||||||||||||||||
07 | -10.0 14 | 759.1 29.89 1012.05 1012.05 | 767.9 30.23 1023.78 1023.78 | 0.7 0.03 0.93 0.93 | 84 | Calm, no wind | Calm | 20–30%. 2/10–3/10. 2 oktas | -10.0 14 | -2.8 27 | 2500 or more, or no clouds. 8202 or more, or no clouds. | 16.0 9.9 | -12.2 10 | ||||||||||||||||
04 | -8.9 16 | 758.4 29.86 1011.12 1011.12 | 767.0 30.2 1022.58 1022.58 | 0.0 0 0 0 | 71 | Calm, no wind | Calm | no clouds no clouds no clouds | 16.0 9.9 | -13.3 8 | |||||||||||||||||||
01 | -3.9 25 | 758.4 29.86 1011.12 1011.12 | 767.0 30.2 1022.58 1022.58 | -1.0 -0.04 -1.33 -1.33 | 46 | Wind blowing from the south | 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 | 2000-2500 6562-8202 | 16.0 9.9 | -13.9 7 | |||||||||||||||||
| December 15, Monday | 22 | -3.3 26 | 759.4 29.9 1012.45 1012.45 | 768.2 30.24 1024.18 1024.18 | -1.5 -0.06 -2 -2 | 53 | Wind blowing from the south | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | 2000-2500 6562-8202 | 16.0 9.9 | -11.7 11 | |||||||||||||||||
19 | -4.4 24 | 760.9 29.96 1014.45 1014.45 | 769.8 30.31 1026.32 1026.32 | 50 | Wind blowing from the east-southeast | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | -10.0 14 | -2.8 27 | 2500 or more, or no clouds. 8202 or more, or no clouds. | 16.0 9.9 | -13.3 8 | |||||||||||||||||
13 | -4.4 24 | 763.4 30.06 1017.78 1017.78 | 772.3 30.41 1029.65 1029.65 | -1.5 -0.06 -2 -2 | 50 | Wind blowing from the west | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | -8.9 16 | -3.9 25 | 2500 or more, or no clouds. 8202 or more, or no clouds. | 16.0 9.9 | -13.3 8 | ||||||||||||||||