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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 31, Wednesday | 12 | -15.8 4 | 749.1 29.49 998.72 998.72 | 749.9 29.52 999.78 999.78 | 0.5 0.02 0.67 0.67 | 87 | Wind blowing from the south-west | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | 100%. 10/10. 8 oktas | Diameter of compound deposit is 19 mm. 0.8 inches. | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 100%. 10/10. 8 oktas | 2500 or more, or no clouds. 8202 or more, or no clouds. | Altocumulus translucidus in bands, or one or more layers of Altocumulus translucidus or opacus, progressively invading the sky; these Altocumulus clouds generally thicken as a whole. | 20.0 12.4 | -17.5 1 | |||||||||||||
09 | -15.1 5 | 748.6 29.47 998.05 998.05 | 749.4 29.5 999.12 999.12 | 0.7 0.03 0.93 0.93 | 87 | Calm, no wind | Calm | 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. | 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 fibratus, sometimes uncinus, not progressively invading the sky. | 4.0 2.5 | -16.8 2 | |||||||||||
06 | -12.6 9 | 747.9 29.44 997.12 997.12 | 748.7 29.48 998.18 998.18 | 0.6 0.02 0.8 0.8 | 90 | 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 | Mist. Diameter of compound deposit is 10 mm. 0.4 inches. | 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. | -16.7 2 | 4.0 2.5 | -13.9 7 | 2.0 0.08 | 12 | Uneven layer of loose dry snow covering ground completely. | 24 9.4 | |||||||||||
03 | -9.3 15 | 747.3 29.42 996.32 996.32 | 748.0 29.45 997.25 997.25 | 1.1 0.04 1.47 1.47 | 94 | 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 | Mist. | Shower(s). | 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. | 20–30%. 2/10–3/10. 2 oktas | 2500 or more, or no clouds. 8202 or more, or no clouds. | Altocumulus translucidus at a single level. | No Cirrus, Cirrocumulus or Cirrostratus. | 4.0 2.5 | -10.1 14 | |||||||||||
00 | -3.8 25 | 746.2 29.38 994.85 994.85 | 747.0 29.41 995.92 995.92 | 0.5 0.02 0.67 0.67 | 97 | Wind blowing from the north-northwest | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 60%. 6/10. 5 oktas | State of sky on the whole unchanged. Diameter of glaze deposit is 6 mm. 0.2 inches. | Shower(s). | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cumulonimbus calvus, with or without Cumulus, Stratocumulus or Stratus. | 40%. 4/10. 3 oktas | 300-600 984-1968 | Altocumulus translucidus at a single level. | No Cirrus, Cirrocumulus or Cirrostratus. | 20.0 12.4 | -4.2 24 | |||||||||||
| December 30, Tuesday | 21 | -5.8 22 | 745.7 29.36 994.19 994.19 | 746.5 29.39 995.25 995.25 | 0.7 0.03 0.93 0.93 | 96 | Wind blowing from the west-southwest | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 10 m/s 36 km/h 22 mph 19 knots 5 Bft | 70 – 80%. 7/10 – 8/10. 6 oktas | State of sky on the whole unchanged. | Shower(s). | Snow and/or other types of solid precipitation | Cumulonimbus calvus, with or without Cumulus, Stratocumulus or Stratus. | 70 – 80%. 7/10 – 8/10. 6 oktas | 300-600 984-1968 | No Altocumulus, Altostratus or Nimbostratus. | No Cirrus, Cirrocumulus or Cirrostratus. | 20.0 12.4 | -6.4 20 | |||||||||
18 | -5.0 23 | 745.0 29.33 993.25 993.25 | 745.7 29.36 994.19 994.19 | 0.5 0.02 0.67 0.67 | 96 | Wind blowing from the west-southwest | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 100%. 10/10. 8 oktas | Continuous fall of snowflakes, slight at time of observation. Diameter of compound deposit is 12 mm. 0.5 inches. | Snow and/or other types of solid precipitation | Cloud covering more than 1/2 of the sky throughout the appropriate period. | -2.6 27 | Stratus fractus or Cumulus fractus of bad weather, or both (pannus), usually below Altostratus or Nimbostratus. | 60%. 6/10. 5 oktas | 300-600 984-1968 | Altostratus opacus or Nimbostratus. | 20.0 12.4 | -5.5 22 | 0.3 0.01 | 12 | |||||||||
15 | -2.8 27 | 744.5 29.31 992.59 992.59 | 745.3 29.34 993.65 993.65 | 0.2 0.01 0.27 0.27 | 97 | Wind blowing from the south-southwest | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft) | 100%. 10/10. 8 oktas | Stratus nebulosus or Stratus fractus other than of bad weather, or both. | 100%. 10/10. 8 oktas | 200-300 656-984 | 20.0 12.4 | -3.2 26 | ||||||||||||||||
12 | -3.6 26 | 744.3 29.3 992.32 992.32 | 745.0 29.33 993.25 993.25 | -0.2 -0.01 -0.27 -0.27 | 96 | Wind blowing from the south-southwest | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft) | 100%. 10/10. 8 oktas | Diameter of compound deposit is 14 mm. 0.6 inches. | Stratus nebulosus or Stratus fractus other than of bad weather, or both. | 100%. 10/10. 8 oktas | 200-300 656-984 | 20.0 12.4 | -4.1 25 | |||||||||||||||