Weather archive in San Ramon
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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 September 16, Tuesday | 17 | 29.2 85 | 743.5 29.27 991.25 991.25 | 755.4 29.74 1007.12 1007.12 | -2.1 -0.08 -2.8 -2.8 | 70 | Wind blowing from the north-northwest | 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 | 35.0 95 | Cumulonimbus capillatus (often with an anvil), with or without Cumulonimbus calvus, Cumulus, Stratocumulus, Stratus or pannus. | 70 – 80%. 7/10 – 8/10. 6 oktas | 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 | 23.1 74 | ||||||||||||
14 | 32.6 91 | 745.6 29.35 994.05 994.05 | 757.5 29.82 1009.92 1009.92 | 59 | 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 | Thunderstorm, but no precipitation at the 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. | Cumulonimbus capillatus (often with an anvil), with or without Cumulonimbus calvus, Cumulus, Stratocumulus, Stratus or pannus. | 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 | 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 | 23.5 74 | ||||||||||||
11 | 32.5 91 | 748.0 29.45 997.25 997.25 | 760.0 29.92 1013.25 1013.25 | 0.3 0.01 0.4 0.4 | 60 | Calm, no wind | Calm | 40%. 4/10. 3 oktas | Visibility reduced by smoke, e.g. veldt or forest fires, industrial smoke or volcanic ashes. | 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. | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 40%. 4/10. 3 oktas | 2000-2500 6562-8202 | Altocumulus translucidus at a single level. | No Cirrus, Cirrocumulus or Cirrostratus. | 8.0 5.0 | 23.7 75 | |||||||||||
08 | 24.1 75 | 747.7 29.44 996.85 996.85 | 759.8 29.91 1012.98 1012.98 | 92 | Calm, no wind | Calm | 70 – 80%. 7/10 – 8/10. 6 oktas | Visibility reduced by smoke, e.g. veldt or forest fires, industrial smoke or volcanic ashes. | 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. | 22.7 73 | 36.7 98 | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 70 – 80%. 7/10 – 8/10. 6 oktas | 2000-2500 6562-8202 | Altocumulus translucidus at a single level. | No Cirrus, Cirrocumulus or Cirrostratus. | 8.0 5.0 | 22.8 73 | Dry (without cracks, no appreciable amount of dust or loose sand) | |||||||||