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 16, Sunday	23	23.3 74	750.8 29.56 1000.98 1000.98	759.1 29.89 1012.05 1012.05	-0.8 -0.03 -1.07 -1.07	97	Wind blowing from the south	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	22.8 73	Trace of precipitation Trace of precipitation	3
	20	25.0 77	751.6 29.59 1002.05 1002.05	759.8 29.91 1012.98 1012.98	-0.7 -0.03 -0.93 -0.93	94	Wind blowing from the west	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)	8 m/s 29 km/h 18 miles/hour 16 knots 5 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.			23.3 74	26.7 80			200-300 656-984			3.2 2.0	23.9 75	30.0 1.18	6
	17	26.1 79	752.3 29.62 1002.98 1002.98	760.5 29.94 1013.92 1013.92	-1.8 -0.07 -2.4 -2.4	85	Wind blowing from the south-southeast	Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas								300-600 984-1968			16.0 9.9	23.3 74	Trace of precipitation Trace of precipitation	3
	14	23.9 75	754.1 29.69 1005.38 1005.38	762.4 30.02 1016.45 1016.45	-1.3 -0.05 -1.73 -1.73	94	Wind blowing from the south	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			100%. 10/10. 8 oktas					24.4 76			200-300 656-984			16.0 9.9	22.8 73	4.0 0.16	6
	11	23.9 75	755.4 29.74 1007.12 1007.12	763.5 30.06 1017.92 1017.92	-0.7 -0.03 -0.93 -0.93	84	Wind blowing from the south	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas								600-1000 1968-3281			16.0 9.9	21.1 70	0.3 0.01	3
	08	24.4 76	756.1 29.77 1008.05 1008.05	764.2 30.09 1018.85 1018.85	0.3 0.01 0.4 0.4	82	Wind blowing from the south	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			100%. 10/10. 8 oktas				23.9 75	30.6 87			600-1000 1968-3281			16.0 9.9	21.1 70
	05	23.9 75	755.8 29.76 1007.65 1007.65	763.9 30.07 1018.45 1018.45	-0.8 -0.03 -1.07 -1.07	84	Wind blowing from the south	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			100%. 10/10. 8 oktas								1500-2000 4921-6562			16.0 9.9	21.1 70
	02	24.4 76	756.6 29.79 1008.72 1008.72	764.7 30.11 1019.52 1019.52	-0.5 -0.02 -0.67 -0.67	77	Wind blowing from the south-southeast	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			100%. 10/10. 8 oktas				21.7 71	27.8 82			2500 or more, or no clouds. 8202 or more, or no clouds.			16.0 9.9	20.0 68