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 5, Friday | 14 | 3.9 39 | 656.0 25.83 874.59 874.59 | 759.0 29.88 1011.92 1011.92 | -2.7 -0.11 -3.6 -3.6 | 57 | Wind blowing from the east | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | no clouds no clouds no clouds | 16.0 9.9 | -3.9 25 | ||||||||||||||||||
11 | 3.9 39 | 658.7 25.93 878.19 878.19 | 762.1 30 1016.05 1016.05 | -0.9 -0.04 -1.2 -1.2 | 55 | Calm, no wind | Calm | 20–30%. 2/10–3/10. 2 oktas | 1.7 35 | 4.4 40 | 1000-1500 3281-4921 | 16.0 9.9 | -4.4 24 | ||||||||||||||||
08 | 2.2 36 | 659.6 25.97 879.39 879.39 | 763.4 30.06 1017.78 1017.78 | 0.2 0.01 0.27 0.27 | 62 | Wind blowing from the west | 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 | -4.4 24 | ||||||||||||||||||
05 | 2.2 36 | 659.4 25.96 879.13 879.13 | 763.0 30.04 1017.25 1017.25 | 0.2 0.01 0.27 0.27 | 62 | Wind blowing from the west | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft) | 50%. 5/10. 4 oktas | 1.7 35 | 4.4 40 | 2000-2500 6562-8202 | 16.0 9.9 | -4.4 24 | ||||||||||||||||
02 | 2.8 37 | 659.2 25.95 878.86 878.86 | 762.7 30.03 1016.85 1016.85 | 0.0 0 0 0 | 67 | Wind blowing from the west-southwest | Moderate breeze (7 m/s) (25 km/h) (16 miles/hour) (14 knots) (4 Bft) | 100%. 10/10. 8 oktas | 1500-2000 4921-6562 | 16.0 9.9 | -2.8 27 | ||||||||||||||||||
| December 4, Thursday | 23 | 2.2 36 | 659.2 25.95 878.86 878.86 | 763.0 30.04 1017.25 1017.25 | 0.5 0.02 0.67 0.67 | 73 | Wind blowing from the west | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 100%. 10/10. 8 oktas | 1.1 34 | 3.9 39 | 1000-1500 3281-4921 | 16.0 9.9 | -2.2 28 | |||||||||||||||
20 | 2.2 36 | 658.7 25.93 878.19 878.19 | 762.4 30.02 1016.45 1016.45 | -0.2 -0.01 -0.27 -0.27 | 73 | 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 | 1000-1500 3281-4921 | 16.0 9.9 | -2.2 28 | ||||||||||||||||||
17 | 3.9 39 | 658.9 25.94 878.46 878.46 | 762.5 30.02 1016.58 1016.58 | 0.0 0 0 0 | 60 | Calm, no wind | Calm | 100%. 10/10. 8 oktas | 1.1 34 | 4.4 40 | 1000-1500 3281-4921 | 16.0 9.9 | -3.3 26 | ||||||||||||||||
14 | 3.3 38 | 658.9 25.94 878.46 878.46 | 762.8 30.03 1016.98 1016.98 | -1.6 -0.06 -2.13 -2.13 | 62 | Wind blowing from the north-west | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 100%. 10/10. 8 oktas | 1000-1500 3281-4921 | 16.0 9.9 | -3.3 26 | ||||||||||||||||||