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 | |
| 2025 December 9, Tuesday | 16 | -11.1 12 | 747.1 29.41 996.05 996.05 | 758.2 29.85 1010.85 1010.85 | -3.6 -0.14 -4.8 -4.8 | 81 | Wind blowing from the east-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 | 600-1000 1968-3281 | 16.0 9.9 | -13.8 7 | |||||||||||||||||
15 | -12.1 10 | 748.2 29.46 997.52 997.52 | 759.3 29.89 1012.32 1012.32 | 81 | -14.8 5 | ||||||||||||||||||||||||
14 | -12.7 9 | 749.1 29.49 998.72 998.72 | 760.2 29.93 1013.52 1013.52 | 82 | -15.2 5 | ||||||||||||||||||||||||
13 | -13.7 7 | 750.7 29.56 1000.85 1000.85 | 761.8 29.99 1015.65 1015.65 | -3.3 -0.13 -4.4 -4.4 | 83 | Wind blowing from the east | 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 | Continuous fall of snowflakes, slight 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. | -23.4 -10 | -13.7 7 | Stratocumulus other than Stratocumulus cumulogenitus. | 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. | 12.0 7.5 | -16.0 3 | Trace of precipitation Trace of precipitation | 6 | Even layer of loose dry snow covering ground completely. | 9 3.5 | |||||
12 | -14.7 6 | 751.9 29.6 1002.45 1002.45 | 763.0 30.04 1017.25 1017.25 | 83 | -17.0 1 | ||||||||||||||||||||||||
11 | -16.6 2 | 752.9 29.64 1003.78 1003.78 | 764.2 30.09 1018.85 1018.85 | 81 | -19.1 -2 | ||||||||||||||||||||||||
10 | -17.7 0 | 754.0 29.69 1005.25 1005.25 | 765.2 30.13 1020.18 1020.18 | -1.5 -0.06 -2 -2 | 80 | Wind blowing from the north-east | 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 | 50-100 164-328 | 6.0 3.7 | -20.3 -5 | ||||||||||||||||||
09 | -18.4 -1 | 754.6 29.71 1006.05 1006.05 | 765.8 30.15 1020.98 1020.98 | 79 | -21.1 -6 | ||||||||||||||||||||||||
08 | -20.1 -4 | 755.2 29.73 1006.85 1006.85 | 766.5 30.18 1021.92 1021.92 | 80 | -22.7 -9 | ||||||||||||||||||||||||
07 | -22.1 -8 | 755.5 29.74 1007.25 1007.25 | 766.9 30.19 1022.45 1022.45 | -1.5 -0.06 -2 -2 | 77 | Wind blowing from the east | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | -23.4 -10 | -12.0 10 | 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. | No Cirrus, Cirrocumulus or Cirrostratus. | 24.0 14.9 | -25.0 -13 | No precipitation No precipitation | 6 | Even layer of loose dry snow covering ground completely. | 9 3.5 | ||||||||
06 | -21.6 -7 | 756.2 29.77 1008.18 1008.18 | 767.5 30.22 1023.25 1023.25 | 78 | -24.5 -12 | ||||||||||||||||||||||||
05 | -20.9 -6 | 756.4 29.78 1008.45 1008.45 | 767.7 30.22 1023.52 1023.52 | 80 | -23.4 -10 | ||||||||||||||||||||||||
04 | -21.8 -7 | 757.0 29.8 1009.25 1009.25 | 768.2 30.24 1024.18 1024.18 | -0.9 -0.04 -1.2 -1.2 | 79 | Wind blowing from the south-west | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 40%. 4/10. 3 oktas | 2500 or more, or no clouds. 8202 or more, or no clouds. | 24.0 14.9 | -24.5 -12 | ||||||||||||||||||
03 | -20.8 -5 | 757.4 29.82 1009.78 1009.78 | 768.7 30.26 1024.85 1024.85 | 81 | -23.2 -10 | ||||||||||||||||||||||||
02 | -19.6 -3 | 757.4 29.82 1009.78 1009.78 | 768.7 30.26 1024.85 1024.85 | 83 | -21.8 -7 | ||||||||||||||||||||||||
01 | -19.8 -4 | 757.9 29.84 1010.45 1010.45 | 769.1 30.28 1025.38 1025.38 | -0.7 -0.03 -0.93 -0.93 | 83 | Calm, no wind | Calm | 70 – 80%. 7/10 – 8/10. 6 oktas | -21.6 -7 | -12.0 10 | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 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. | Altostratus opacus or Nimbostratus. | No Cirrus, Cirrocumulus or Cirrostratus. | 24.0 14.9 | -22.0 -8 | No precipitation No precipitation | 6 | ||||||||||
00 | -21.1 -6 | 758.1 29.85 1010.72 1010.72 | 769.4 30.29 1025.78 1025.78 | 82 | -23.4 -10 | ||||||||||||||||||||||||
| December 8, Monday | 23 | -20.4 -5 | 758.5 29.86 1011.25 1011.25 | 769.8 30.31 1026.32 1026.32 | 83 | -22.5 -9 | |||||||||||||||||||||||
22 | -19.8 -4 | 758.6 29.87 1011.38 1011.38 | 769.9 30.31 1026.45 1026.45 | -0.8 -0.03 -1.07 -1.07 | 79 | Calm, no wind | Calm | 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. | 24.0 14.9 | -22.5 -9 | ||||||||||||||||||
21 | -17.3 1 | 759.0 29.88 1011.92 1011.92 | 770.3 30.33 1026.98 1026.98 | 74 | -20.8 -5 | ||||||||||||||||||||||||
20 | -16.1 3 | 759.2 29.89 1012.18 1012.18 | 770.5 30.33 1027.25 1027.25 | 75 | -19.6 -3 | ||||||||||||||||||||||||
19 | -17.8 -0 | 759.4 29.9 1012.45 1012.45 | 770.7 30.34 1027.52 1027.52 | 0.0 0 0 0 | 75 | Wind blowing from the west | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | no clouds no clouds no clouds | -20.2 -4 | -12.8 9 | 24.0 14.9 | -21.2 -6 | No precipitation No precipitation | 6 | |||||||||||||||
17 | -14.8 5 | 759.4 29.9 1012.45 1012.45 | 770.6 30.34 1027.38 1027.38 | 66 | -19.8 -4 | ||||||||||||||||||||||||
16 | -13.9 7 | 759.4 29.9 1012.45 1012.45 | 770.6 30.34 1027.38 1027.38 | -0.3 -0.01 -0.4 -0.4 | 61 | Wind blowing from the west-southwest | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | no clouds no clouds no clouds | 24.0 14.9 | -19.8 -4 | |||||||||||||||||||