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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 20, Saturday | 14 | -16.9 2 | 686.1 27.01 914.72 914.72 | 776.2 30.56 1034.85 1034.85 | -1.2 -0.05 -1.6 -1.6 | 57 | Wind blowing from the west-southwest | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 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 uncinus or fibratus, or both, progressively invading the sky; they generally thicken as a whole. | 50.0 31.1 | -23.4 -10 | |||||||||||||
11 | -19.1 -2 | 687.3 27.06 916.32 916.32 | 778.4 30.65 1037.78 1037.78 | 0.6 0.02 0.8 0.8 | 59 | Wind blowing from the west | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft) | no clouds no clouds no clouds | 50.0 31.1 | -25.1 -13 | |||||||||||||||||||
08 | -22.3 -8 | 686.7 27.04 915.52 915.52 | 778.9 30.67 1038.45 1038.45 | 1.0 0.04 1.33 1.33 | 63 | Wind blowing from the west | Moderate breeze (7 m/s) (25 km/h) (16 miles/hour) (14 knots) (4 Bft) | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | -22.3 -8 | 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. | 50.0 31.1 | -27.4 -17 | Uneven layer of loose dry snow covering ground completely. | 3 1.2 | |||||||||||
05 | -18.5 -1 | 685.7 27 914.19 914.19 | 776.4 30.57 1035.12 1035.12 | 0.9 0.04 1.2 1.2 | 60 | Wind blowing from the west | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 11 m/s 40 km/h 25 miles/hour 21 mile/hour 6 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 uncinus or fibratus, or both, progressively invading the sky; they generally thicken as a whole. | -24.4 -12 | ||||||||||||||
02 | -16.1 3 | 684.8 26.96 912.99 912.99 | 774.5 30.49 1032.58 1032.58 | 1.3 0.05 1.73 1.73 | 53 | Wind blowing from the north-west | Fresh breeze (8 m/s) (29 km/h) (18 miles/hour) (16 knots) (5 Bft) | 11 m/s 40 km/h 25 miles/hour 21 mile/hour 6 Bft | 70 – 80%. 7/10 – 8/10. 6 oktas | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 50%. 5/10. 4 oktas | 2500 or more, or no clouds. 8202 or more, or no clouds. | Patches (often lenticular) of Altocumulus translucidus, continually changing and occurring at one or more levels. | Cirrus uncinus or fibratus, or both, progressively invading the sky; they generally thicken as a whole. | -23.5 -10 | ||||||||||||||
| December 19, Friday | 23 | -15.3 4 | 683.5 26.91 911.26 911.26 | 772.6 30.42 1030.05 1030.05 | 1.7 0.07 2.27 2.27 | 55 | Wind blowing from the west-northwest | 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 | 90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 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. | Cirrostratus not progressively invading the sky and not entirely covering it. | -22.3 -8 | |||||||||||||
20 | -15.2 5 | 681.8 26.84 908.99 908.99 | 770.8 30.35 1027.65 1027.65 | 2.2 0.09 2.93 2.93 | 61 | Wind blowing from the west | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | no clouds no clouds no clouds | State of sky on the whole unchanged. | Blizzard | Cloud covering 1/2 or less of the sky throughout the appropriate period. | -12.2 10 | -21.0 -6 | ||||||||||||||||
17 | -16.1 3 | 679.6 26.76 906.06 906.06 | 768.6 30.26 1024.72 1024.72 | 2.5 0.1 3.33 3.33 | 59 | Wind blowing from the west | Moderate breeze (7 m/s) (25 km/h) (16 miles/hour) (14 knots) (4 Bft) | no clouds no clouds no clouds | State of sky on the whole unchanged. | Blizzard | Cloud covering 1/2 or less of the sky throughout the appropriate period. | 50.0 31.1 | -22.3 -8 | ||||||||||||||||
14 | -12.7 9 | 677.1 26.66 902.73 902.73 | 764.5 30.1 1019.25 1019.25 | 0.0 0 0 0 | 49 | Wind blowing from the north-west | Fresh breeze (9 m/s) (32 km/h) (20 miles/hour) (17 knots) (5 Bft) | 16 m/s 58 km/h 36 miles/hour 31 mile/hour 7 Bft | no clouds no clouds no clouds | Slight or moderate drifting snow generally low (below eye level). | Blizzard | 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. | 50.0 31.1 | -21.2 -6 | |||||||||||||||