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 19, Friday | 04 | 14.4 58 | 741.7 29.2 988.85 988.85 | 749.8 29.52 999.65 999.65 | -4.8 -0.19 -6.4 -6.4 | 93 | Wind blowing from the south-southeast | 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 | Mist. | 300-600 984-1968 | 9.0 5.6 | 13.3 56 | 2.0 0.08 | 3 | |||||||||||||
01 | 11.7 53 | 746.5 29.39 995.25 995.25 | 754.8 29.72 1006.32 1006.32 | -5.4 -0.21 -7.2 -7.2 | 89 | Wind blowing from the south-southeast | 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. | 11.7 53 | 1500-2000 4921-6562 | 16.0 9.9 | 10.0 50 | 3.0 0.12 | 6 | ||||||||||||||
| December 18, Thursday | 22 | 7.2 45 | 751.9 29.6 1002.45 1002.45 | 760.2 29.93 1013.52 1013.52 | 93 | Wind blowing from the south | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 100%. 10/10. 8 oktas | Rain, not freezing, continuous, slight at time of observation. | 600-1000 1968-3281 | 14.0 8.7 | 6.1 43 | 3.0 0.12 | 3 | |||||||||||||||
16 | 11.1 52 | 755.8 29.76 1007.65 1007.65 | 764.5 30.1 1019.25 1019.25 | -1.8 -0.07 -2.4 -2.4 | 49 | Wind blowing from the south-southeast | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 100%. 10/10. 8 oktas | 1000-1500 3281-4921 | 16.0 9.9 | 0.6 33 | ||||||||||||||||||
13 | 12.2 54 | 757.6 29.83 1010.05 1010.05 | 766.0 30.16 1021.25 1021.25 | -2.5 -0.1 -3.33 -3.33 | 47 | Wind blowing from the south | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | -4.4 24 | 12.2 54 | 2500 or more, or no clouds. 8202 or more, or no clouds. | 16.0 9.9 | 1.1 34 | ||||||||||||||||
10 | 5.6 42 | 760.1 29.93 1013.38 1013.38 | 768.7 30.26 1024.85 1024.85 | 0.4 0.02 0.53 0.53 | 58 | Wind blowing from the north | 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 | -2.2 28 | ||||||||||||||||||
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 | |||||||||||||||||||