Weather archive in Santa Rosa
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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 August 28, Friday | 23 | 9.1 48 | 742.7 29.24 990.19 990.19 | 760.0 29.92 1013.25 1013.25 | 1.0 0.04 1.33 1.33 | 80 | Wind blowing from the north-west | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | Widespread dust in suspension in the air, not raised by wind at or near the station at the time of observation. | Cloud covering 1/2 or less of the sky throughout the appropriate period. | Cloud covering 1/2 or less of the sky throughout the appropriate period. | 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. | 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. | 9.0 5.6 | 5.8 42 | ||||||||||
22 | 8.8 48 | 742.4 29.23 989.79 989.79 | 759.7 29.91 1012.85 1012.85 | 1.3 0.05 1.73 1.73 | 84 | Wind blowing from the west | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | no clouds no clouds no clouds | 30.0 18.6 | 6.2 43 | |||||||||||||||||||
21 | 11.4 53 | 742.1 29.22 989.39 989.39 | 759.4 29.9 1012.45 1012.45 | 1.5 0.06 2 2 | 76 | Wind blowing from the west-northwest | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 7.6 46 | 19.9 68 | 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. | 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. | 30.0 18.6 | 7.3 45 | No precipitation No precipitation | 6 | ||||||||||
20 | 14.2 58 | 741.7 29.2 988.85 988.85 | 758.9 29.88 1011.78 1011.78 | 1.1 0.04 1.47 1.47 | 66 | Wind blowing from the north-west | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | 20–30%. 2/10–3/10. 2 oktas | 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. | 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. | 30.0 18.6 | 7.8 46 | ||||||||||||||
19 | 16.2 61 | 741.1 29.18 988.05 988.05 | 758.2 29.85 1010.85 1010.85 | 0.5 0.02 0.67 0.67 | 57 | Wind blowing from the north-west | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 20–30%. 2/10–3/10. 2 oktas | 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. | Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole, but the continuous veil does not reach 45 degrees above the horizon. | 30.0 18.6 | 7.7 46 | ||||||||||||||
18 | 18.3 65 | 740.6 29.16 987.39 987.39 | 757.6 29.83 1010.05 1010.05 | 0.0 0 0 0 | 41 | Wind blowing from the west-southwest | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | 50%. 5/10. 4 oktas | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 40%. 4/10. 3 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. | Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole; the continuous veil extends more than 45 degrees above the horizon, without the sky being totally covered. | 30.0 18.6 | 4.7 40 | ||||||||||||||
17 | 18.4 65 | 740.6 29.16 987.39 987.39 | 757.6 29.83 1010.05 1010.05 | -0.2 -0.01 -0.27 -0.27 | 39 | Wind blowing from the west-southwest | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | 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 | 1500-2000 4921-6562 | 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 (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole; the continuous veil extends more than 45 degrees above the horizon, without the sky being totally covered. | 30.0 18.6 | 4.3 40 | ||||||||||||||
16 | 19.1 66 | 740.6 29.16 987.39 987.39 | 757.6 29.83 1010.05 1010.05 | -0.6 -0.02 -0.8 -0.8 | 42 | Wind blowing from the west-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 | 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 | 1500-2000 4921-6562 | 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 (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole; the continuous veil extends more than 45 degrees above the horizon, without the sky being totally covered. | 30.0 18.6 | 5.9 43 | ||||||||||||||
15 | 19.4 67 | 740.6 29.16 987.39 987.39 | 757.6 29.83 1010.05 1010.05 | -0.8 -0.03 -1.07 -1.07 | 37 | Wind blowing from the west-southwest | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 60%. 6/10. 5 oktas | 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 | 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. | Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole; the continuous veil extends more than 45 degrees above the horizon, without the sky being totally covered. | 30.0 18.6 | 4.4 40 | No precipitation No precipitation | 6 | ||||||||||||
14 | 18.9 66 | 740.8 29.17 987.65 987.65 | 757.9 29.84 1010.45 1010.45 | -0.3 -0.01 -0.4 -0.4 | 47 | Wind blowing from the west-southwest | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 50%. 5/10. 4 oktas | Cumulus humilis or Cumulus fractus other than of bad weather, or both. | 20–30%. 2/10–3/10. 2 oktas | 1000-1500 3281-4921 | No Altocumulus, Altostratus or Nimbostratus. | Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole; the continuous veil extends more than 45 degrees above the horizon, without the sky being totally covered. | 30.0 18.6 | 7.2 45 | ||||||||||||||
13 | 17.9 64 | 741.2 29.18 988.19 988.19 | 758.3 29.85 1010.98 1010.98 | 0.1 0 0.13 0.13 | 57 | Wind blowing from the west-southwest | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 40%. 4/10. 3 oktas | Cumulus humilis or Cumulus fractus other than of bad weather, or both. | 20–30%. 2/10–3/10. 2 oktas | 1000-1500 3281-4921 | No Altocumulus, Altostratus or Nimbostratus. | Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole, but the continuous veil does not reach 45 degrees above the horizon. | 30.0 18.6 | 9.2 49 | ||||||||||||||
12 | 18.1 65 | 741.4 29.19 988.45 988.45 | 758.4 29.86 1011.12 1011.12 | 0.9 0.04 1.2 1.2 | 56 | Wind blowing from the north-west | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 40%. 4/10. 3 oktas | 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 uncinus or fibratus, or both, progressively invading the sky; they generally thicken as a whole. | 30.0 18.6 | 9.2 49 | ||||||||||||||
11 | 14.9 59 | 741.1 29.18 988.05 988.05 | 758.2 29.85 1010.85 1010.85 | 1.4 0.06 1.87 1.87 | 75 | Wind blowing from the west-northwest | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 40%. 4/10. 3 oktas | 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. | Cirrus uncinus or fibratus, or both, progressively invading the sky; they generally thicken as a whole. | 30.0 18.6 | 10.4 51 | ||||||||||||||
10 | 10.5 51 | 741.1 29.18 988.05 988.05 | 758.2 29.85 1010.85 1010.85 | 1.5 0.06 2 2 | 85 | Wind blowing from the west | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 40%. 4/10. 3 oktas | 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. | Cirrus uncinus or fibratus, or both, progressively invading the sky; they generally thicken as a whole. | 30.0 18.6 | 8.1 47 | ||||||||||||||
09 | 8.1 47 | 740.5 29.15 987.25 987.25 | 757.7 29.83 1010.18 1010.18 | 1.1 0.04 1.47 1.47 | 90 | Wind blowing from the west | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 20–30%. 2/10–3/10. 2 oktas | Mist. | Cloud covering 1/2 or less of the sky throughout the appropriate period. | Cloud covering 1/2 or less of the sky throughout the appropriate period. | 5.5 42 | 12.6 55 | 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. | 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. | 9.0 5.6 | 6.6 44 | |||||||||
08 | 5.9 43 | 739.7 29.12 986.19 986.19 | 757.0 29.8 1009.25 1009.25 | 0.3 0.01 0.4 0.4 | 97 | Wind blowing from the west-northwest | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | no clouds no clouds no clouds | Mist. | Cloud covering 1/2 or less of the sky throughout the appropriate period. | Cloud covering 1/2 or less of the sky throughout the appropriate period. | 4.0 2.5 | 5.4 42 | ||||||||||||||||
07 | 7.4 45 | 739.6 29.12 986.05 986.05 | 756.7 29.79 1008.85 1008.85 | 0.0 0 0 0 | 96 | Wind blowing from the north-west | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | no clouds no clouds no clouds | Mist. | Cloud covering 1/2 or less of the sky throughout the appropriate period. | Cloud covering 1/2 or less of the sky throughout the appropriate period. | 15.0 9.3 | 6.8 44 | ||||||||||||||||
06 | 9.1 48 | 739.4 29.11 985.79 985.79 | 756.4 29.78 1008.45 1008.45 | -0.6 -0.02 -0.8 -0.8 | 96 | Wind blowing from the north-west | 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 | Mist. | Cloud covering 1/2 or less of the sky throughout the appropriate period. | Cloud covering 1/2 or less of the sky throughout the appropriate period. | 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. | 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 | 8.5 47 | |||||||||||
05 | 9.8 50 | 739.4 29.11 985.79 985.79 | 756.3 29.78 1008.32 1008.32 | -0.6 -0.02 -0.8 -0.8 | 95 | Wind blowing from the north-west | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 20–30%. 2/10–3/10. 2 oktas | 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. | 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. | 30.0 18.6 | 9.0 48 | ||||||||||||||
04 | 9.4 49 | 739.6 29.12 986.05 986.05 | 756.5 29.78 1008.58 1008.58 | -0.3 -0.01 -0.4 -0.4 | 92 | Wind blowing from the north-west | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 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. | 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. | 30.0 18.6 | 8.2 47 | ||||||||||||||
03 | 9.6 49 | 740.0 29.13 986.59 986.59 | 756.9 29.8 1009.12 1009.12 | 0.1 0 0.13 0.13 | 85 | Wind blowing from the north-northwest | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | no clouds no clouds no clouds | 30.0 18.6 | 7.1 45 | No precipitation No precipitation | 6 | |||||||||||||||||
02 | 5.9 43 | 740.0 29.13 986.59 986.59 | 757.1 29.81 1009.38 1009.38 | 0.3 0.01 0.4 0.4 | 94 | Wind blowing from the north-west | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | no clouds no clouds no clouds | 30.0 18.6 | 5.0 41 | |||||||||||||||||||
01 | 6.0 43 | 739.9 29.13 986.45 986.45 | 757.0 29.8 1009.25 1009.25 | 0.3 0.01 0.4 0.4 | 93 | Wind blowing from the north | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | no clouds no clouds no clouds | 30.0 18.6 | 4.9 41 | |||||||||||||||||||
00 | 7.8 46 | 739.9 29.13 986.45 986.45 | 756.9 29.8 1009.12 1009.12 | 0.6 0.02 0.8 0.8 | 94 | Wind blowing from the north | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | no clouds no clouds no clouds | 30.0 18.6 | 6.9 44 | |||||||||||||||||||
| August 27, Thursday | 23 | 11.0 52 | 739.7 29.12 986.19 986.19 | 756.7 29.79 1008.85 1008.85 | 0.7 0.03 0.93 0.93 | 89 | Wind blowing from the north-west | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | no clouds no clouds no clouds | 30.0 18.6 | 9.2 49 | ||||||||||||||||||