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 18, Thursday | 07 | -3.9 25 | 759.7 29.91 1012.85 1012.85 | 768.4 30.25 1024.45 1024.45 | 0.6 0.02 0.8 0.8 | 85 | Wind blowing from the south-southwest | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | -5.0 23 | 10.0 50 | 2500 or more, or no clouds. 8202 or more, or no clouds. | 16.0 9.9 | -6.1 21 | |||||||||||||||
04 | -3.9 25 | 759.1 29.89 1012.05 1012.05 | 767.8 30.23 1023.65 1023.65 | 0.5 0.02 0.67 0.67 | 88 | Calm, no wind | Calm | no clouds no clouds no clouds | 16.0 9.9 | -5.6 22 | |||||||||||||||||||
01 | -2.8 27 | 758.6 29.87 1011.38 1011.38 | 767.1 30.2 1022.72 1022.72 | 0.2 0.01 0.27 0.27 | 85 | Wind blowing from the east-northeast | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 20–30%. 2/10–3/10. 2 oktas | -6.1 21 | 7.8 46 | 2500 or more, or no clouds. 8202 or more, or no clouds. | 16.0 9.9 | -5.0 23 | ||||||||||||||||
| December 17, Wednesday | 22 | -0.6 31 | 758.4 29.86 1011.12 1011.12 | 767.0 30.2 1022.58 1022.58 | 2.6 0.1 3.47 3.47 | 79 | Wind blowing from the south-east | 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 | -3.9 25 | |||||||||||||||||
19 | 3.3 38 | 755.8 29.76 1007.65 1007.65 | 764.5 30.1 1019.25 1019.25 | 2.4 0.09 3.2 3.2 | 68 | Calm, no wind | Calm | 70 – 80%. 7/10 – 8/10. 6 oktas | -6.0 21 | 10.0 50 | 2500 or more, or no clouds. 8202 or more, or no clouds. | 16.0 9.9 | -2.2 28 | ||||||||||||||||
16 | 9.4 49 | 753.4 29.66 1004.45 1004.45 | 761.8 29.99 1015.65 1015.65 | 1.5 0.06 2 2 | 46 | Calm, no wind | Calm | 70 – 80%. 7/10 – 8/10. 6 oktas | 2500 or more, or no clouds. 8202 or more, or no clouds. | 16.0 9.9 | -1.7 29 | ||||||||||||||||||
13 | 8.9 48 | 751.9 29.6 1002.45 1002.45 | 760.3 29.93 1013.65 1013.65 | -1.7 -0.07 -2.27 -2.27 | 48 | 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 | -2.8 27 | 8.9 48 | 2500 or more, or no clouds. 8202 or more, or no clouds. | 16.0 9.9 | -1.7 29 | ||||||||||||||||
10 | 5.0 41 | 753.6 29.67 1004.72 1004.72 | 762.1 30 1016.05 1016.05 | -0.3 -0.01 -0.4 -0.4 | 51 | Wind blowing from the south-southwest | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | 1500-2000 4921-6562 | 16.0 9.9 | -4.4 24 | ||||||||||||||||||
07 | -2.8 27 | 753.9 29.68 1005.12 1005.12 | 762.5 30.02 1016.58 1016.58 | -1.0 -0.04 -1.33 -1.33 | 58 | Wind blowing from the south-southeast | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | -6.1 21 | 5.0 41 | 1500-2000 4921-6562 | 16.0 9.9 | -10.0 14 | ||||||||||||||||