Weather archive in Ottawa (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	02	18.1 65	747.0 29.41 995.92 995.92	757.3 29.81 1009.65 1009.65	0.6 0.02 0.8 0.8	94	Wind blowing from the north-west	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas	State of sky on the whole unchanged.	Rain.	Cloud covering more than 1/2 of the sky throughout the appropriate period.	17.6 64	21.9 71	Stratocumulus other than Stratocumulus cumulogenitus.	20–30%. 2/10–3/10. 2 oktas	200-300 656-984	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	17.1 63	Trace of precipitation Trace of precipitation	6
July 9, Thursday	23	19.3 67	746.4 29.39 995.12 995.12	756.6 29.79 1008.72 1008.72	0.5 0.02 0.67 0.67	96	Wind blowing from the north-northwest	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								300-600 984-1968			24.0 14.9	18.6 65
	20	20.2 68	745.9 29.37 994.45 994.45	756.1 29.77 1008.05 1008.05	-0.5 -0.02 -0.67 -0.67	97	Wind blowing from the south-west	Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft)			100%. 10/10. 8 oktas	Rain, not freezing, intermittent, slight at time of observation.	Rain.	Cloud covering more than 1/2 of the sky throughout the appropriate period.	18.7 66	21.9 71	Stratocumulus other than Stratocumulus cumulogenitus.	100%. 10/10. 8 oktas	100-200 328-656			24.0 14.9	19.7 67	26.0 1.02	6
	17	20.1 68	746.4 29.39 995.12 995.12	756.6 29.79 1008.72 1008.72	-0.4 -0.02 -0.53 -0.53	96	Wind blowing from the west	Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft)			100%. 10/10. 8 oktas								300-600 984-1968			12.0 7.5	19.4 67
	14	20.2 68	746.8 29.4 995.65 995.65	757.0 29.8 1009.25 1009.25	-1.1 -0.04 -1.47 -1.47	98	Wind blowing from the north-east	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			100%. 10/10. 8 oktas	Rain, not freezing, continuous, moderate at time of observation.	Cloud covering more than 1/2 of the sky throughout the appropriate period.	Cloud covering more than 1/2 of the sky throughout the appropriate period.	18.7 66	21.9 71	Stratocumulus other than Stratocumulus cumulogenitus.	100%. 10/10. 8 oktas	100-200 328-656			9.0 5.6	19.8 68	13.0 0.51	6
	11	21.4 71	747.9 29.44 997.12 997.12	758.1 29.85 1010.72 1010.72	-0.1 -0 -0.13 -0.13	86	Wind blowing from the east	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			100%. 10/10. 8 oktas								1500-2000 4921-6562			24.0 14.9	19.0 66
	08	21.5 71	748.0 29.45 997.25 997.25	758.2 29.85 1010.85 1010.85	-0.1 -0 -0.13 -0.13	78	Wind blowing from the north-northeast	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				18.7 66	31.6 89	Stratocumulus other than Stratocumulus cumulogenitus.	90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas	1500-2000 4921-6562	No Altocumulus, Altostratus or Nimbostratus.	No Cirrus, Cirrocumulus or Cirrostratus.	24.0 14.9	17.4 63	No precipitation No precipitation	6
	05	20.7 69	748.1 29.45 997.38 997.38	758.2 29.85 1010.85 1010.85	0.4 0.02 0.53 0.53	81	Wind blowing from the north-northwest	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas								2000-2500 6562-8202			24.0 14.9	17.4 63
	02	19.5 67	747.7 29.44 996.85 996.85	757.9 29.84 1010.45 1010.45	-0.5 -0.02 -0.67 -0.67	86	Calm, no wind	Calm			20–30%. 2/10–3/10. 2 oktas				17.2 63	31.6 89	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 fibratus, sometimes uncinus, not progressively invading the sky.	24.0 14.9	17.1 63	No precipitation No precipitation	6