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 13, Monday	02	18.9 66	758.9 29.88 1011.78 1011.78	767.0 30.2 1022.58 1022.58	0.5 0.02 0.67 0.67	93	Calm, no wind	Calm			50%. 5/10. 4 oktas				18.3 65	23.9 75			2500 or more, or no clouds. 8202 or more, or no clouds.			16.0 9.9	17.8 64
July 12, Sunday	23	21.1 70	758.4 29.86 1011.12 1011.12	766.6 30.18 1022.05 1022.05	0.5 0.02 0.67 0.67	87	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	18.9 66
	20	23.9 75	757.9 29.84 1010.45 1010.45	766.0 30.16 1021.25 1021.25	0.8 0.03 1.07 1.07	71	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				22.2 72	29.4 85			1000-1500 3281-4921			16.0 9.9	18.3 65	6.0 0.24	6
	17	23.3 74	757.1 29.81 1009.38 1009.38	765.4 30.13 1020.45 1020.45	0.0 0 0 0	82	Wind blowing from the south	Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas								600-1000 1968-3281			16.0 9.9	20.0 68	6.0 0.24	3
	14	27.2 81	757.1 29.81 1009.38 1009.38	765.3 30.13 1020.32 1020.32	-0.3 -0.01 -0.4 -0.4	69	Wind blowing from the north-east	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas				23.3 74	27.8 82			600-1000 1968-3281			16.0 9.9	21.1 70
	11	25.6 78	757.4 29.82 1009.78 1009.78	765.7 30.15 1020.85 1020.85	1.0 0.04 1.33 1.33	76	Wind blowing from the north-east	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			100%. 10/10. 8 oktas								600-1000 1968-3281			16.0 9.9	21.1 70
	08	23.3 74	756.4 29.78 1008.45 1008.45	764.5 30.1 1019.25 1019.25	1.3 0.05 1.73 1.73	91	Wind blowing from the north-northeast	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			100%. 10/10. 8 oktas				21.1 70	31.1 88			300-600 984-1968			16.0 9.9	21.7 71
	05	23.3 74	755.1 29.73 1006.72 1006.72	763.2 30.05 1017.52 1017.52	0.8 0.03 1.07 1.07	91	Wind blowing from the north	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			100%. 10/10. 8 oktas								300-600 984-1968			16.0 9.9	21.7 71
	02	23.3 74	754.3 29.7 1005.65 1005.65	762.4 30.02 1016.45 1016.45	0.9 0.04 1.2 1.2	91	Wind blowing from the north-northeast	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			100%. 10/10. 8 oktas				21.1 70	28.3 83			300-600 984-1968			16.0 9.9	21.7 71	18.0 0.71	6