Weather archive in Helena (airport)
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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 9, Tuesday | 11 | 7.2 45 | 657.4 25.88 876.46 876.46 | 759.0 29.88 1011.92 1011.92 | 4.6 0.18 6.13 6.13 | 56 | Wind blowing from the west | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 10 m/s 36 km/h 22 mph 19 knots 5 Bft | 70 – 80%. 7/10 – 8/10. 6 oktas | 5.6 42 | 12.8 55 | 2000-2500 6562-8202 | 16.0 9.9 | -1.1 30 | 0.3 0.01 | 6 | ||||||||||||
08 | 9.4 49 | 652.8 25.7 870.33 870.33 | 754.1 29.69 1005.38 1005.38 | -0.4 -0.02 -0.53 -0.53 | 61 | Wind blowing from the west | Near gale (14 m/s) (50 km/h) (31 mile/hour) (27 knots) (7 Bft) | 20 m/s 72 km/h 45 miles/hour 39 knots 8 Bft | 100%. 10/10. 8 oktas | 1500-2000 4921-6562 | 16.0 9.9 | 2.2 36 | |||||||||||||||||
05 | 12.2 54 | 653.2 25.72 870.86 870.86 | 754.3 29.7 1005.65 1005.65 | 0.4 0.02 0.53 0.53 | 45 | Wind blowing from the west-southwest | Fresh breeze (10 m/s) (36 km/h) (22 mph) (19 knots) (5 Bft) | 16 m/s 58 km/h 36 miles/hour 31 mile/hour 7 Bft | 70 – 80%. 7/10 – 8/10. 6 oktas | 3.3 38 | 12.2 54 | 1500-2000 4921-6562 | 16.0 9.9 | 0.6 33 | |||||||||||||||
02 | 12.8 55 | 652.8 25.7 870.33 870.33 | 753.5 29.67 1004.58 1004.58 | -1.6 -0.06 -2.13 -2.13 | 42 | Wind blowing from the west-southwest | Near gale (14 m/s) (50 km/h) (31 mile/hour) (27 knots) (7 Bft) | 21 m/s 76 km/h 47 miles/hour 41 mile/hour 9 Bft | no clouds no clouds no clouds | 16.0 9.9 | 0.0 32 | ||||||||||||||||||
| December 8, Monday | 23 | 11.7 53 | 654.4 25.76 872.46 872.46 | 755.8 29.76 1007.65 1007.65 | -1.8 -0.07 -2.4 -2.4 | 43 | Wind blowing from the west-southwest | Fresh breeze (8 m/s) (29 km/h) (18 miles/hour) (16 knots) (5 Bft) | 14 m/s 50 km/h 31 mile/hour 27 knots 7 Bft | no clouds no clouds no clouds | 1.7 35 | 11.7 53 | 16.0 9.9 | -0.6 31 | |||||||||||||||
20 | 7.2 45 | 656.2 25.83 874.86 874.86 | 758.3 29.85 1010.98 1010.98 | -2.1 -0.08 -2.8 -2.8 | 54 | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 20–30%. 2/10–3/10. 2 oktas | 1500-2000 4921-6562 | 16.0 9.9 | -1.7 29 | |||||||||||||||||||
17 | 6.1 43 | 658.3 25.92 877.66 877.66 | 761.3 29.97 1014.98 1014.98 | -2.2 -0.09 -2.93 -2.93 | 53 | Wind blowing from the east | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 20–30%. 2/10–3/10. 2 oktas | 1.7 35 | 9.4 49 | 1500-2000 4921-6562 | 16.0 9.9 | -2.8 27 | ||||||||||||||||
14 | 8.9 48 | 660.5 26 880.59 880.59 | 763.3 30.05 1017.65 1017.65 | -0.9 -0.04 -1.2 -1.2 | 42 | Wind blowing from the west-northwest | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 100%. 10/10. 8 oktas | 1500-2000 4921-6562 | 16.0 9.9 | -3.3 26 | ||||||||||||||||||
11 | 7.2 45 | 661.4 26.04 881.79 881.79 | 765.0 30.12 1019.92 1019.92 | -0.5 -0.02 -0.67 -0.67 | 42 | Wind blowing from the south | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft) | 10 m/s 36 km/h 22 mph 19 knots 5 Bft | 100%. 10/10. 8 oktas | 2.8 37 | 7.2 45 | 1500-2000 4921-6562 | 16.0 9.9 | -5.0 23 | |||||||||||||||