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 | |
| 2026 May 7, Thursday | 15 | 17.8 64 | 658.9 25.94 878.46 878.46 | 759.5 29.9 1012.58 1012.58 | -0.9 -0.04 -1.2 -1.2 | 45 | Wind blowing from the north | 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 | 70 – 80%. 7/10 – 8/10. 6 oktas | 2000-2500 6562-8202 | 16.0 9.9 | 5.6 42 | ||||||||||||||||
12 | 15.6 60 | 659.8 25.98 879.66 879.66 | 760.6 29.94 1014.05 1014.05 | 0.2 0.01 0.27 0.27 | 56 | Wind blowing from the north-northeast | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 100%. 10/10. 8 oktas | 8.3 47 | 16.1 61 | 1000-1500 3281-4921 | 16.0 9.9 | 6.7 44 | 0.5 0.02 | 6 | ||||||||||||||
09 | 11.1 52 | 659.6 25.97 879.39 879.39 | 760.6 29.94 1014.05 1014.05 | 1.3 0.05 1.73 1.73 | 72 | Wind blowing from the west-southwest | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 100%. 10/10. 8 oktas | Rain, not freezing, continuous, moderate at time of observation. | 600-1000 1968-3281 | 4.8 3.0 | 6.1 43 | 0.5 0.02 | 3 | |||||||||||||||
06 | 9.4 49 | 658.3 25.92 877.66 877.66 | 758.8 29.87 1011.65 1011.65 | 0.7 0.03 0.93 0.93 | 86 | Calm, no wind | Calm | 70 – 80%. 7/10 – 8/10. 6 oktas | 8.9 48 | 23.3 74 | 2000-2500 6562-8202 | 16.0 9.9 | 7.2 45 | 0.8 0.03 | 6 | ||||||||||||||
03 | 14.4 58 | 657.6 25.89 876.73 876.73 | 757.9 29.84 1010.45 1010.45 | -0.2 -0.01 -0.27 -0.27 | 48 | Wind blowing from the west | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 50%. 5/10. 4 oktas | 2500 or more, or no clouds. 8202 or more, or no clouds. | 16.0 9.9 | 3.3 38 | Trace of precipitation Trace of precipitation | 3 | ||||||||||||||||
00 | 15.0 59 | 657.8 25.9 876.99 876.99 | 758.8 29.87 1011.65 1011.65 | 0.9 0.04 1.2 1.2 | 51 | Wind blowing from the west | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 8 m/s 29 km/h 18 miles/hour 16 knots 5 Bft | 100%. 10/10. 8 oktas | Rain, not freezing, slight. | 22.8 73 | 1500-2000 4921-6562 | 16.0 9.9 | 5.0 41 | Trace of precipitation Trace of precipitation | 6 | |||||||||||||
| May 6, Wednesday | 21 | 18.9 66 | 656.9 25.86 875.79 875.79 | 758.3 29.85 1010.98 1010.98 | 0.0 0 0 0 | 33 | Wind blowing from the west-southwest | Fresh breeze (8 m/s) (29 km/h) (18 miles/hour) (16 knots) (5 Bft) | 12 m/s 43 km/h 27 miles/hour 23 knots 6 Bft | 50%. 5/10. 4 oktas | 2500 or more, or no clouds. 8202 or more, or no clouds. | 16.0 9.9 | 2.2 36 | ||||||||||||||||
18 | 22.8 73 | 656.9 25.86 875.79 875.79 | 758.5 29.86 1011.25 1011.25 | -1.6 -0.06 -2.13 -2.13 | 20 | Wind blowing from the west-northwest | Strong breeze (11 m/s) (40 km/h) (25 miles/hour) (21 mile/hour) (6 Bft) | 15 m/s 54 km/h 34 mph 29 knots 7 Bft | 70 – 80%. 7/10 – 8/10. 6 oktas | -2.7 27 | 23.3 74 | 2500 or more, or no clouds. 8202 or more, or no clouds. | 16.0 9.9 | -1.1 30 | |||||||||||||||
15 | 18.3 65 | 658.5 25.93 877.93 877.93 | 760.6 29.94 1014.05 1014.05 | -2.2 -0.09 -2.93 -2.93 | 26 | Calm, no wind | Calm | no clouds no clouds no clouds | 16.0 9.9 | -1.7 29 | |||||||||||||||||||