Weather archive in Montreal / Pierre Elliott Trudeau (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 September 20, Sunday	13	15.5 60	758.4 29.86 1011.12 1011.12	761.8 29.99 1015.65 1015.65	-0.7 -0.03 -0.93 -0.93	67	Calm, no wind	Calm			60%. 6/10. 5 oktas	Clouds generally dissolving or becoming less developed.	Rain.	Cloud covering more than 1/2 of the sky throughout the appropriate period.	9.9 50	16.0 61	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	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.	Cirrus fibratus, sometimes uncinus, not progressively invading the sky.	24.0 14.9	9.3 49	Trace of precipitation Trace of precipitation	6
	10	12.8 55	759.1 29.89 1012.05 1012.05	762.5 30.02 1016.58 1016.58	-0.3 -0.01 -0.4 -0.4	75	Calm, no wind	Calm			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	8.4 47
	07	10.3 51	759.4 29.9 1012.45 1012.45	762.8 30.03 1016.98 1016.98	0.0 0 0 0	86	Wind blowing from the north-northeast	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			100%. 10/10. 8 oktas				9.9 50	17.1 63	Stratocumulus other than Stratocumulus cumulogenitus.	70 – 80%. 7/10 – 8/10. 6 oktas	1500-2000 4921-6562	Altocumulus translucidus at a single level.		24.0 14.9	8.1 47	No precipitation No precipitation	6
	04	10.6 51	759.4 29.9 1012.45 1012.45	762.8 30.03 1016.98 1016.98	-1.4 -0.06 -1.87 -1.87	85	Wind blowing from the east-southeast	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.			24.0 14.9	8.2 47
	01	11.5 53	760.8 29.95 1014.32 1014.32	764.2 30.09 1018.85 1018.85	-1.3 -0.05 -1.73 -1.73	71	Wind blowing from the east	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			100%. 10/10. 8 oktas				6.3 43	17.1 63	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.	Cirrostratus covering the whole sky.	24.0 14.9	6.3 43	No precipitation No precipitation	6
September 19, Saturday	22	12.4 54	762.1 30 1016.05 1016.05	765.5 30.14 1020.58 1020.58	-0.5 -0.02 -0.67 -0.67	62	Wind blowing from the east	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			40%. 4/10. 3 oktas								2500 or more, or no clouds. 8202 or more, or no clouds.			24.0 14.9	5.3 42
	19	14.0 57	762.6 30.02 1016.72 1016.72	766.0 30.16 1021.25 1021.25	-0.4 -0.02 -0.53 -0.53	52	Wind blowing from the east	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			no clouds no clouds no clouds				6.3 43	17.1 63						24.0 14.9	4.2 40	No precipitation No precipitation	6
	16	16.3 61	763.0 30.04 1017.25 1017.25	766.4 30.17 1021.78 1021.78	-1.4 -0.06 -1.87 -1.87	47	Wind blowing from the north	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			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.			45.0 28.0	4.9 41
	13	15.3 60	764.4 30.09 1019.12 1019.12	767.8 30.23 1023.65 1023.65	-1.3 -0.05 -1.73 -1.73	48	Wind blowing from the south-southeast	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0				6.3 43	16.0 61	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	1000-1500 3281-4921	No Altocumulus, Altostratus or Nimbostratus.	Cirrus fibratus, sometimes uncinus, not progressively invading the sky.	45.0 28.0	4.3 40	No precipitation No precipitation	6