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 28, Tuesday	05	19.1 66	742.6 29.24 990.05 990.05	752.8 29.64 1003.65 1003.65	-0.6 -0.02 -0.8 -0.8	98	Wind blowing from the north-northwest	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas								600-1000 1968-3281			2.4 1.5	18.8 66
2026 July 28, Tuesday	02	19.0 66	743.2 29.26 990.85 990.85	753.4 29.66 1004.45 1004.45	-1.0 -0.04 -1.33 -1.33	95	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	Lightning visible, no thunder heard.	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.	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.	16.1 61	28.9 84	Cumulonimbus calvus, with or without Cumulus, Stratocumulus or Stratus.	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 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	18.1 65	No precipitation No precipitation	6
July 27, Monday	23	21.2 70	744.2 29.3 992.19 992.19	754.3 29.7 1005.65 1005.65	-0.1 -0 -0.13 -0.13	87	Wind blowing from the south	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.			24.0 14.9	19.0 66
	20	23.4 74	744.3 29.3 992.32 992.32	754.5 29.7 1005.92 1005.92	-0.4 -0.02 -0.53 -0.53	86	Wind blowing from the south-southeast	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 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	State of sky on the whole unchanged.	Thunderstorm(s) with or without precipitation.	Shower(s).	16.1 61	28.9 84	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 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	21.0 70	26.0 1.02	6
	17	20.7 69	744.7 29.32 992.85 992.85	754.9 29.72 1006.45 1006.45	-0.9 -0.04 -1.2 -1.2	91	Wind blowing from the west	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			60%. 6/10. 5 oktas								600-1000 1968-3281			24.0 14.9	19.2 67
	14	28.9 84	745.6 29.35 994.05 994.05	755.7 29.75 1007.52 1007.52	-1.2 -0.05 -1.6 -1.6	56	Wind blowing from the west-southwest	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas				16.1 61	28.9 84	Cumulus mediocris or congestus, with or without Cumulus of species fractus or humilis or Stratocumulus, all having their bases at the same level.	20–30%. 2/10–3/10. 2 oktas	1000-1500 3281-4921	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	19.2 67	No precipitation No precipitation	6
	11	24.1 75	746.8 29.4 995.65 995.65	757.0 29.8 1009.25 1009.25	0.1 0 0.13 0.13	77	Wind blowing from the west-southwest	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								2500 or more, or no clouds. 8202 or more, or no clouds.			24.0 14.9	19.9 68
	08	19.6 67	746.7 29.4 995.52 995.52	756.9 29.8 1009.12 1009.12	0.5 0.02 0.67 0.67	95	Wind blowing from the south	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas				16.1 61	28.8 84	No Stratocumulus, Stratus, Cumulus or Cumulonimbus.	70 – 80%. 7/10 – 8/10. 6 oktas	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	18.7 66	No precipitation No precipitation	6
	05	16.4 62	746.2 29.38 994.85 994.85	756.4 29.78 1008.45 1008.45	-0.3 -0.01 -0.4 -0.4	98	Wind blowing from the south	Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft)			40%. 4/10. 3 oktas								2500 or more, or no clouds. 8202 or more, or no clouds.			24.0 14.9	16.0 61