Weather archive in San Jose
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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 12, Friday | 14 | 34.9 95 | 754.6 29.71 1006.05 1006.05 | 754.9 29.72 1006.45 1006.45 | -2.2 -0.09 -2.93 -2.93 | 49 | Wind blowing from the east-northeast | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft) | 13 m/s 47 km/h 29 miles/hour 25 knots 6 Bft | 40%. 4/10. 3 oktas | Clouds generally forming or developing. | 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. | Cumulonimbus capillatus (often with an anvil), with or without Cumulonimbus calvus, Cumulus, Stratocumulus, Stratus or pannus. | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 300-600 984-1968 | Altocumulus translucidus at a single level. | No Cirrus, Cirrocumulus or Cirrostratus. | 18.0 11.2 | 22.6 73 | |||||||||
11 | 34.1 93 | 756.8 29.8 1008.98 1008.98 | 757.1 29.81 1009.38 1009.38 | -0.4 -0.02 -0.53 -0.53 | 51 | Wind blowing from the east | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft) | 11 m/s 40 km/h 25 miles/hour 21 mile/hour 6 Bft | 20–30%. 2/10–3/10. 2 oktas | Clouds generally dissolving or becoming less developed. | 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. | Cumulonimbus capillatus (often with an anvil), with or without Cumulonimbus calvus, Cumulus, Stratocumulus, Stratus or pannus. | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 300-600 984-1968 | Altocumulus translucidus at a single level. | No Cirrus, Cirrocumulus or Cirrostratus. | 18.0 11.2 | 22.5 73 | ||||||||||
08 | 28.5 83 | 757.2 29.81 1009.52 1009.52 | 757.5 29.82 1009.92 1009.92 | 1.1 0.04 1.47 1.47 | 79 | Wind blowing from the east-northeast | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | Clouds generally forming or developing. | 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. | 25.0 77 | Cumulonimbus capillatus (often with an anvil), with or without Cumulonimbus calvus, Cumulus, Stratocumulus, Stratus or pannus. | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 300-600 984-1968 | Altocumulus translucidus at a single level. | 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. | 18.0 11.2 | 24.4 76 | ||||||||||
05 | 25.6 78 | 756.1 29.77 1008.05 1008.05 | 756.4 29.78 1008.45 1008.45 | -0.3 -0.01 -0.4 -0.4 | 88 | Wind blowing from the east-northeast | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | 40%. 4/10. 3 oktas | Clouds generally dissolving or becoming less developed. | 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. | 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 | No Altocumulus, Altostratus or Nimbostratus. | 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. | 15.0 9.3 | 23.4 74 | |||||||||||
02 | 26.4 80 | 756.4 29.78 1008.45 1008.45 | 756.7 29.79 1008.85 1008.85 | -1.2 -0.05 -1.6 -1.6 | 83 | Wind blowing from the east | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | 60%. 6/10. 5 oktas | State of sky on the whole unchanged. | 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. | 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 translucidus at a single level. | No Cirrus, Cirrocumulus or Cirrostratus. | 15.0 9.3 | 23.3 74 | |||||||||||
| December 11, Thursday | 23 | 27.2 81 | 757.6 29.83 1010.05 1010.05 | 757.9 29.84 1010.45 1010.45 | -0.3 -0.01 -0.4 -0.4 | 90 | Wind blowing from the north-northeast | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | 60%. 6/10. 5 oktas | State of sky on the whole unchanged. | 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. | 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 | No Altocumulus, Altostratus or Nimbostratus. | 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. | 15.0 9.3 | 25.4 78 | ||||||||||
20 | 28.6 83 | 757.9 29.84 1010.45 1010.45 | 758.2 29.85 1010.85 1010.85 | 1.2 0.05 1.6 1.6 | 86 | Wind blowing from the east-northeast | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | 60%. 6/10. 5 oktas | State of sky on the whole unchanged. | 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. | 33.0 91 | 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 translucidus at a single level. | No Cirrus, Cirrocumulus or Cirrostratus. | 15.0 9.3 | 26.0 79 | ||||||||||
17 | 30.3 87 | 756.7 29.79 1008.85 1008.85 | 757.0 29.8 1009.25 1009.25 | 0.6 0.02 0.8 0.8 | 74 | Wind blowing from the west | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 60%. 6/10. 5 oktas | Clouds generally dissolving or becoming less developed. | 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. | 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 | No Altocumulus, Altostratus or Nimbostratus. | 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. | 18.0 11.2 | 25.2 77 | |||||||||||
14 | 32.3 90 | 756.1 29.77 1008.05 1008.05 | 756.4 29.78 1008.45 1008.45 | -1.7 -0.07 -2.27 -2.27 | 67 | 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 | State of sky on the whole unchanged. | 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. | 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 translucidus at a single level. | 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. | 18.0 11.2 | 25.5 78 | |||||||||||
