Weather archive in Ottawa (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 July 25, Saturday	20	23.9 75	750.5 29.55 1000.58 1000.58	760.8 29.95 1014.32 1014.32	-0.8 -0.03 -1.07 -1.07	55	Wind blowing from the south-west	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas				12.9 55	28.5 83	Cumulus humilis or Cumulus fractus other than of bad weather, or both.	10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0	1500-2000 4921-6562	Patches (often lenticular) of Altocumulus translucidus, continually changing and occurring at one or more levels.	Cirrus spissatus, in patches or entangled sheaves, which usually do not increase and sometimes seem to be the remains of the upper part of a Cumulonimbus; or Cirrus castellanus or floccus.	24.0 14.9	14.2 58	No precipitation No precipitation	6
	17	27.1 81	751.3 29.58 1001.65 1001.65	761.5 29.98 1015.25 1015.25	-0.7 -0.03 -0.93 -0.93	40	Wind blowing from the south-southwest	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas								2000-2500 6562-8202			24.0 14.9	12.5 55
	14	27.8 82	752.0 29.61 1002.58 1002.58	762.3 30.01 1016.32 1016.32	-1.7 -0.07 -2.27 -2.27	44	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				12.9 55	27.9 82	Cumulus humilis or Cumulus fractus other than of bad weather, or both.	60%. 6/10. 5 oktas	1500-2000 4921-6562	No Altocumulus, Altostratus or Nimbostratus.	Cirrus fibratus, sometimes uncinus, not progressively invading the sky.	24.0 14.9	14.4 58	No precipitation No precipitation	6
	11	23.4 74	753.7 29.67 1004.85 1004.85	764.0 30.08 1018.58 1018.58	-0.8 -0.03 -1.07 -1.07	62	Wind blowing from the south-southeast	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			60%. 6/10. 5 oktas								2500 or more, or no clouds. 8202 or more, or no clouds.			24.0 14.9	15.6 60
	08	18.3 65	754.5 29.7 1005.92 1005.92	764.8 30.11 1019.65 1019.65	0.1 0 0.13 0.13	77	Wind blowing from the east-southeast	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			no clouds no clouds no clouds				12.9 55	26.7 80						24.0 14.9	14.1 57	No precipitation No precipitation	6
	05	14.8 59	754.4 29.7 1005.78 1005.78	764.8 30.11 1019.65 1019.65	0.1 0 0.13 0.13	83	Wind blowing from the south	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			no clouds no clouds no clouds											24.0 14.9	11.9 53
	02	15.8 60	754.3 29.7 1005.65 1005.65	764.7 30.11 1019.52 1019.52	-0.8 -0.03 -1.07 -1.07	74	Wind blowing from the south	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			no clouds no clouds no clouds				11.3 52	26.7 80						24.0 14.9	11.1 52	No precipitation No precipitation	6
July 24, Friday	23	19.2 67	755.1 29.73 1006.72 1006.72	765.4 30.13 1020.45 1020.45	0.3 0.01 0.4 0.4	61	Wind blowing from the south	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			no clouds no clouds no clouds											24.0 14.9	11.5 53
July 24, Friday	20	22.9 73	754.8 29.72 1006.32 1006.32	765.1 30.12 1020.05 1020.05	0.0 0 0 0	54	Wind blowing from the south-southwest	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			20–30%. 2/10–3/10. 2 oktas				11.3 52	26.7 80	No Stratocumulus, Stratus, Cumulus or Cumulonimbus.	no clouds no clouds no clouds	2500 or more, or no clouds. 8202 or more, or no clouds.	No Altocumulus, Altostratus or Nimbostratus.	Cirrus spissatus, in patches or entangled sheaves, which usually do not increase and sometimes seem to be the remains of the upper part of a Cumulonimbus; or Cirrus castellanus or floccus.	24.0 14.9	13.2 56	No precipitation No precipitation	6