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 June 18, Thursday	02	23.3 74	747.6 29.43 996.72 996.72	755.5 29.74 1007.25 1007.25	0.3 0.01 0.4 0.4	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				14.4 58	27.8 82			2500 or more, or no clouds. 8202 or more, or no clouds.			16.0 9.9	17.8 64
June 17, Wednesday	23	25.0 77	747.3 29.42 996.32 996.32	755.4 29.74 1007.12 1007.12	0.2 0.01 0.27 0.27	56	Wind blowing from the south-southeast	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			no clouds no clouds no clouds											16.0 9.9	15.6 60
	20	28.3 83	747.1 29.41 996.05 996.05	755.2 29.73 1006.85 1006.85	0.0 0 0 0	43	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				14.4 58	30.6 87			2000-2500 6562-8202			16.0 9.9	14.4 58
	17	30.0 86	747.1 29.41 996.05 996.05	755.1 29.73 1006.72 1006.72	-0.7 -0.03 -0.93 -0.93	37	Wind blowing from the south	Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft)			20–30%. 2/10–3/10. 2 oktas								1500-2000 4921-6562			16.0 9.9	13.9 57
	14	29.4 85	747.8 29.44 996.98 996.98	756.1 29.77 1008.05 1008.05	-0.8 -0.03 -1.07 -1.07	40	Wind blowing from the south-west	Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft)	8 m/s 29 km/h 18 miles/hour 16 knots 5 Bft		70 – 80%. 7/10 – 8/10. 6 oktas				21.1 70	29.4 85			1500-2000 4921-6562			16.0 9.9	14.4 58
	11	26.1 79	748.6 29.47 998.05 998.05	756.6 29.79 1008.72 1008.72	-0.5 -0.02 -0.67 -0.67	52					20–30%. 2/10–3/10. 2 oktas								1000-1500 3281-4921			16.0 9.9	15.6 60
	08	21.1 70	749.1 29.49 998.72 998.72	757.0 29.8 1009.25 1009.25	1.1 0.04 1.47 1.47	73	Wind blowing from the south	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			20–30%. 2/10–3/10. 2 oktas				14.4 58	26.1 79			2500 or more, or no clouds. 8202 or more, or no clouds.			16.0 9.9	16.1 61
	05	16.7 62	748.0 29.45 997.25 997.25	756.2 29.77 1008.18 1008.18	-0.6 -0.02 -0.8 -0.8	90	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	15.0 59
	02	19.4 67	748.6 29.47 998.05 998.05	756.6 29.79 1008.72 1008.72	0.0 0 0 0	76	Wind blowing from the south	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			50%. 5/10. 4 oktas				13.9 57	22.8 73			2500 or more, or no clouds. 8202 or more, or no clouds.			16.0 9.9	15.0 59