Weather archive in Washington / Dulles (airport)

To receive explanations, hover over the appropriate heading

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 10, Friday	14	28.9 84	751.3 29.58 1001.65 1001.65	759.6 29.91 1012.72 1012.72	-0.3 -0.01 -0.4 -0.4	63		Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			100%. 10/10. 8 oktas				22.8 73	29.4 85			2500 or more, or no clouds. 8202 or more, or no clouds.			16.0 9.9	21.1 70
	11	28.3 83	751.6 29.59 1002.05 1002.05	759.7 29.91 1012.85 1012.85	0.3 0.01 0.4 0.4	63	Wind blowing from the west	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas								2500 or more, or no clouds. 8202 or more, or no clouds.			16.0 9.9	20.6 69
	08	24.4 76	751.3 29.58 1001.65 1001.65	759.4 29.9 1012.45 1012.45	0.9 0.04 1.2 1.2	79	Calm, no wind	Calm			no clouds no clouds no clouds				20.0 68	30.6 87						16.0 9.9	20.6 69
	05	20.6 69	750.4 29.54 1000.45 1000.45	758.4 29.86 1011.12 1011.12	0.3 0.01 0.4 0.4	96		Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			no clouds no clouds no clouds											16.0 9.9	20.0 68
	02	21.7 71	750.1 29.53 1000.05 1000.05	758.2 29.85 1010.85 1010.85	-0.7 -0.03 -0.93 -0.93	100	Wind blowing from the south-east	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas				21.7 71	24.4 76			2500 or more, or no clouds. 8202 or more, or no clouds.			11.0 6.8	21.7 71
July 9, Thursday	23	22.8 73	750.8 29.56 1000.98 1000.98	758.8 29.87 1011.65 1011.65	1.0 0.04 1.33 1.33	100	Calm, no wind	Calm			20–30%. 2/10–3/10. 2 oktas								2500 or more, or no clouds. 8202 or more, or no clouds.			12.0 7.5	22.8 73
	20	24.4 76	749.8 29.52 999.65 999.65	758.0 29.84 1010.58 1010.58	-0.3 -0.01 -0.4 -0.4	88	Wind blowing from the west	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas				22.8 73	30.6 87			2000-2500 6562-8202			16.0 9.9	22.2 72	37.0 1.46	6
	17	22.8 73	750.1 29.53 1000.05 1000.05	758.1 29.85 1010.72 1010.72	-0.3 -0.01 -0.4 -0.4	96	Wind blowing from the south-southwest	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			100%. 10/10. 8 oktas	Rain, not freezing, continuous, moderate at time of observation.							100-200 328-656			3.2 2.0	22.2 72	29.0 1.14	3
	14	29.4 85	750.4 29.54 1000.45 1000.45	758.4 29.86 1011.12 1011.12	-1.7 -0.07 -2.27 -2.27	72	Wind blowing from the south-southwest	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas				24.4 76	30.0 86			600-1000 1968-3281			16.0 9.9	23.9 75