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 September 9, Tuesday	21	23.3 74	658.7 25.93 878.19 878.19	758.8 29.87 1011.65 1011.65	0.4 0.02 0.53 0.53	29	Wind blowing from the east	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas	Thunderstorm, but no precipitation at the time of observation.							2500 or more, or no clouds. 8202 or more, or no clouds.			16.0 9.9	4.4 40
	18	26.7 80	658.3 25.92 877.66 877.66	758.2 29.85 1010.85 1010.85	-1.3 -0.05 -1.73 -1.73	22	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				10.6 51	27.2 81						16.0 9.9	3.3 38
	15	25.0 77	659.6 25.97 879.39 879.39	759.9 29.92 1013.12 1013.12	-1.1 -0.04 -1.47 -1.47	32	Wind blowing from the north	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas								2500 or more, or no clouds. 8202 or more, or no clouds.			16.0 9.9	7.2 45
	12	19.4 67	660.7 26.01 880.86 880.86	761.5 29.98 1015.25 1015.25	-0.7 -0.03 -0.93 -0.93	42	Wind blowing from the east-northeast	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			no clouds no clouds no clouds				10.0 50	20.0 68						16.0 9.9	6.1 43
	09	11.7 53	661.4 26.04 881.79 881.79	762.4 30.02 1016.45 1016.45	0.2 0.01 0.27 0.27	72	Wind blowing from the north	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			no clouds no clouds no clouds											16.0 9.9	6.7 44
	06	11.7 53	661.2 26.03 881.53 881.53	761.6 29.98 1015.38 1015.38	-0.2 -0.01 -0.27 -0.27	61	Calm, no wind	Calm			no clouds no clouds no clouds				10.6 51	28.9 84						16.0 9.9	4.4 40
	03	13.3 56	661.4 26.04 881.79 881.79	761.6 29.98 1015.38 1015.38	0.2 0.01 0.27 0.27	55	Wind blowing from the west-southwest	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			20–30%. 2/10–3/10. 2 oktas								2500 or more, or no clouds. 8202 or more, or no clouds.			16.0 9.9	4.4 40
	00	14.4 58	661.2 26.03 881.53 881.53	761.6 29.98 1015.38 1015.38	0.5 0.02 0.67 0.67	53	Wind blowing from the north-northeast	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			no clouds no clouds no clouds				13.9 57	27.8 82						16.0 9.9	5.0 41
September 8, Monday	21	21.1 70	660.7 26.01 880.86 880.86	761.1 29.96 1014.72 1014.72	0.4 0.02 0.53 0.53	32	Wind blowing from the west	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			no clouds no clouds no clouds											16.0 9.9	3.9 39