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 August 24, Monday	20	16.6 62	748.0 29.45 997.25 997.25	758.3 29.85 1010.98 1010.98	0.8 0.03 1.07 1.07	91	Wind blowing from the south	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			60%. 6/10. 5 oktas	Precipitation within sight, reaching the ground or the surface of the sea, but distant, i.e. estimated to be more than 5 km from the station.	Shower(s).	Cloud covering more than 1/2 of the sky throughout the appropriate period.	13.2 56	21.3 70	Cumulus mediocris or congestus, with or without Cumulus of species fractus or humilis or Stratocumulus, all having their bases at the same level.	10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0	600-1000 1968-3281	Altocumulus cumulogenitus (or cumulonimbogenitus).	Cirrus fibratus, sometimes uncinus, not progressively invading the sky.	24.0 14.9	15.1 59	4.0 0.16	6
	17	19.0 66	747.2 29.42 996.18 996.18	757.5 29.82 1009.92 1009.92	-0.1 -0 -0.13 -0.13	82	Wind blowing from the south	Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 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								300-600 984-1968			24.0 14.9	15.8 60
	14	20.1 68	747.3 29.42 996.32 996.32	757.6 29.83 1010.05 1010.05	-0.3 -0.01 -0.4 -0.4	69	Wind blowing from the south	Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft)			90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas				13.2 56	21.2 70	Cumulus and Stratocumulus other than Stratocumulus cumulogenitus, with bases at different levels.	90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas	600-1000 1968-3281	No Altocumulus, Altostratus or Nimbostratus.	No Cirrus, Cirrocumulus or Cirrostratus.	24.0 14.9	14.3 58	No precipitation No precipitation	6
	11	17.9 64	747.6 29.43 996.72 996.72	757.9 29.84 1010.45 1010.45	0.4 0.02 0.53 0.53	78	Wind blowing from the south	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								600-1000 1968-3281			24.0 14.9	14.0 57
	08	15.2 59	747.2 29.42 996.18 996.18	757.5 29.82 1009.92 1009.92	0.9 0.04 1.2 1.2	93	Wind blowing from the south	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			20–30%. 2/10–3/10. 2 oktas	State of sky on the whole unchanged.	Shower(s).	Cloud covering more than 1/2 of the sky during part of the appropriate period and covering 1/2 or less during part of the period.	13.2 56	24.4 76	No Stratocumulus, Stratus, Cumulus or Cumulonimbus.	10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0	2500 or more, or no clouds. 8202 or more, or no clouds.	Altocumulus translucidus or opacus in two or more layers, or Altocumulus opacus in a single layer, not progressively invading the sky, or Altocumulus with Altostratus or Nimbostratus.	Cirrus fibratus, sometimes uncinus, not progressively invading the sky.	24.0 14.9	14.0 57	0.2 0.01	6
	05	14.0 57	746.3 29.38 994.99 994.99	756.6 29.79 1008.72 1008.72	0.6 0.02 0.8 0.8	97	Wind blowing from the south-southeast	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			40%. 4/10. 3 oktas								200-300 656-984			24.0 14.9	13.6 56
	02	16.2 61	745.7 29.36 994.19 994.19	755.9 29.76 1007.78 1007.78	0.4 0.02 0.53 0.53	88	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				15.9 61	24.4 76	Stratocumulus other than Stratocumulus cumulogenitus.	100%. 10/10. 8 oktas	300-600 984-1968			24.0 14.9	14.2 58	No precipitation No precipitation	6
August 23, Sunday	23	16.3 61	745.3 29.34 993.65 993.65	755.5 29.74 1007.25 1007.25	1.4 0.06 1.87 1.87	90	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								300-600 984-1968			24.0 14.9	14.7 58
August 23, Sunday	20	19.1 66	743.9 29.29 991.79 991.79	754.1 29.69 1005.38 1005.38	1.0 0.04 1.33 1.33	72	Wind blowing from the south-southwest	Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft)			60%. 6/10. 5 oktas	Precipitation within sight, reaching the ground or the surface of the sea, but distant, i.e. estimated to be more than 5 km from the station.	Shower(s).	Cloud covering more than 1/2 of the sky during part of the appropriate period and covering 1/2 or less during part of the period.	17.7 64	24.4 76	Cumulus mediocris or congestus, with or without Cumulus of species fractus or humilis or Stratocumulus, all having their bases at the same level.	60%. 6/10. 5 oktas	600-1000 1968-3281	Altocumulus translucidus or opacus in two or more layers, or Altocumulus opacus in a single layer, not progressively invading the sky, or Altocumulus with Altostratus or Nimbostratus.	No Cirrus, Cirrocumulus or Cirrostratus.	24.0 14.9	14.0 57	Trace of precipitation Trace of precipitation	6