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 August 19, Wednesday	20	26.7 80	751.9 29.6 1002.45 1002.45	760.1 29.93 1013.38 1013.38	0.0 0 0 0	62	Wind blowing from the west-southwest	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			20–30%. 2/10–3/10. 2 oktas				16.7 62	31.7 89			2500 or more, or no clouds. 8202 or more, or no clouds.			16.0 9.9	18.9 66
	17	30.6 87	751.9 29.6 1002.45 1002.45	759.9 29.92 1013.12 1013.12	-0.4 -0.02 -0.53 -0.53	48	Wind blowing from the west	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			100%. 10/10. 8 oktas								2500 or more, or no clouds. 8202 or more, or no clouds.			16.0 9.9	18.3 65
	14	30.0 86	752.3 29.62 1002.98 1002.98	760.5 29.94 1013.92 1013.92	-0.3 -0.01 -0.4 -0.4	46		Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			50%. 5/10. 4 oktas				21.7 71	30.0 86			1500-2000 4921-6562			16.0 9.9	17.2 63
	11	28.3 83	752.6 29.63 1003.38 1003.38	760.7 29.95 1014.18 1014.18	-0.2 -0.01 -0.27 -0.27	48	Wind blowing from the north-west	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	16.1 61
	08	21.7 71	752.8 29.64 1003.65 1003.65	761.1 29.96 1014.72 1014.72	0.7 0.03 0.93 0.93	71	Wind blowing from the north-northwest	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			no clouds no clouds no clouds				16.7 62	30.6 87						16.0 9.9	16.1 61
	05	17.2 63	752.1 29.61 1002.72 1002.72	760.2 29.93 1013.52 1013.52	0.0 0 0 0	93	Calm, no wind	Calm			no clouds no clouds no clouds											16.0 9.9	16.1 61
	02	20.6 69	752.1 29.61 1002.72 1002.72	760.3 29.93 1013.65 1013.65	0.0 0 0 0	81	Calm, no wind	Calm			20–30%. 2/10–3/10. 2 oktas				20.0 68	27.8 82			2000-2500 6562-8202			16.0 9.9	17.2 63
August 18, Tuesday	23	22.2 72	752.1 29.61 1002.72 1002.72	760.2 29.93 1013.52 1013.52	0.8 0.03 1.07 1.07	82	Calm, no wind	Calm			no clouds no clouds no clouds											16.0 9.9	18.9 66
August 18, Tuesday	20	27.8 82	751.3 29.58 1001.65 1001.65	759.4 29.9 1012.45 1012.45	0.0 0 0 0	55	Wind blowing from the north-west	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			50%. 5/10. 4 oktas				21.7 71	30.6 87			1500-2000 4921-6562			16.0 9.9	17.8 64