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 22, Monday	17	28.3 83	749.3 29.5 998.98 998.98	757.4 29.82 1009.78 1009.78	-1.1 -0.04 -1.47 -1.47	67	Wind blowing from the north-west	Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas	Thunderstorm, slight or moderate, without hail, but with rain and/or snow at time of observation.							600-1000 1968-3281			11.0 6.8	21.7 71	0.5 0.02	3
	14	31.7 89	750.4 29.54 1000.45 1000.45	758.5 29.86 1011.25 1011.25	-0.7 -0.03 -0.93 -0.93	48	Wind blowing from the south-west	Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft)	10 m/s 36 km/h 22 mph 19 knots 5 Bft		70 – 80%. 7/10 – 8/10. 6 oktas				23.3 74	32.2 90			1500-2000 4921-6562			16.0 9.9	19.4 67
	11	27.8 82	751.1 29.57 1001.38 1001.38	759.3 29.89 1012.32 1012.32	-0.5 -0.02 -0.67 -0.67	56	Wind blowing from the south-southwest	Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas								1500-2000 4921-6562			16.0 9.9	18.3 65
	08	23.3 74	751.6 29.59 1002.05 1002.05	759.8 29.91 1012.98 1012.98	-0.7 -0.03 -0.93 -0.93	69	Calm, no wind	Calm			70 – 80%. 7/10 – 8/10. 6 oktas				18.9 66	30.0 86			2500 or more, or no clouds. 8202 or more, or no clouds.			16.0 9.9	17.2 63
	05	20.6 69	752.3 29.62 1002.98 1002.98	760.5 29.94 1013.92 1013.92	-0.3 -0.01 -0.4 -0.4	68	Wind blowing from the west-northwest	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	14.4 58
	02	21.1 70	752.6 29.63 1003.38 1003.38	760.8 29.95 1014.32 1014.32	-0.2 -0.01 -0.27 -0.27	59	Calm, no wind	Calm			70 – 80%. 7/10 – 8/10. 6 oktas				18.9 66	27.2 81			2500 or more, or no clouds. 8202 or more, or no clouds.			16.0 9.9	12.8 55
June 21, Sunday	23	21.7 71	752.8 29.64 1003.65 1003.65	761.1 29.96 1014.72 1014.72	0.5 0.02 0.67 0.67	55	Calm, no wind	Calm			20–30%. 2/10–3/10. 2 oktas								2500 or more, or no clouds. 8202 or more, or no clouds.			16.0 9.9	12.2 54
	20	27.2 81	752.3 29.62 1002.98 1002.98	760.4 29.94 1013.78 1013.78	0.7 0.03 0.93 0.93	35	Wind blowing from the north	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			50%. 5/10. 4 oktas				19.4 67	30.0 86			2500 or more, or no clouds. 8202 or more, or no clouds.			16.0 9.9	10.6 51
	17	29.4 85	751.6 29.59 1002.05 1002.05	759.8 29.91 1012.98 1012.98	-0.5 -0.02 -0.67 -0.67	30	Wind blowing from the north-west	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			50%. 5/10. 4 oktas								2000-2500 6562-8202			16.0 9.9	10.0 50