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 | |
| 2026 September 18, Friday | 17 | 33.0 91 | 745.1 29.33 993.39 993.39 | 757.0 29.8 1009.25 1009.25 | -2.0 -0.08 -2.67 -2.67 | 57 | Wind blowing from the west | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | 34.9 95 | Cumulonimbus capillatus (often with an anvil), with or without Cumulonimbus calvus, Cumulus, Stratocumulus, Stratus or pannus. | 40%. 4/10. 3 oktas | 300-600 984-1968 | Altocumulus translucidus at a single level. | No Cirrus, Cirrocumulus or Cirrostratus. | 20.0 12.4 | 23.5 74 | ||||||||||||
14 | 34.4 94 | 747.1 29.41 996.05 996.05 | 758.9 29.88 1011.78 1011.78 | -1.6 -0.06 -2.13 -2.13 | 54 | Wind blowing from the north | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | Cumulonimbus capillatus (often with an anvil), with or without Cumulonimbus calvus, Cumulus, Stratocumulus, Stratus or pannus. | 20–30%. 2/10–3/10. 2 oktas | 300-600 984-1968 | Altocumulus translucidus at a single level. | No Cirrus, Cirrocumulus or Cirrostratus. | 20.0 12.4 | 23.7 75 | ||||||||||||||
11 | 32.5 91 | 748.7 29.48 998.18 998.18 | 760.6 29.94 1014.05 1014.05 | 0.2 0.01 0.27 0.27 | 59 | Calm, no wind | Calm | 40%. 4/10. 3 oktas | 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. | 20.0 12.4 | 23.4 74 | ||||||||||||||
08 | 25.2 77 | 748.5 29.47 997.92 997.92 | 760.6 29.94 1014.05 1014.05 | 92 | 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 | 23.9 75 | 36.7 98 | 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 | 2000-2500 6562-8202 | 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. | 20.0 12.4 | 23.8 75 | Dry (without cracks, no appreciable amount of dust or loose sand) | ||||||||||||