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 April 12, Sunday	21	7.2 45	653.8 25.74 871.66 871.66	755.6 29.75 1007.38 1007.38	1.0 0.04 1.33 1.33	90	Wind blowing from the south	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			100%. 10/10. 8 oktas								600-1000 1968-3281			16.0 9.9	5.6 42	4.0 0.16	3
	18	10.6 51	652.8 25.7 870.33 870.33	754.4 29.7 1005.78 1005.78	-0.2 -0.01 -0.27 -0.27	66	Wind blowing from the north-west	Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft)			100%. 10/10. 8 oktas				2.8 37	12.8 55			1500-2000 4921-6562			16.0 9.9	4.4 40	0.3 0.01	6
	15	10.6 51	653.0 25.71 870.6 870.6	754.5 29.7 1005.92 1005.92	-1.0 -0.04 -1.33 -1.33	71	Wind blowing from the north-west	Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft)			100%. 10/10. 8 oktas	Rain, not freezing, continuous, slight at time of observation.							1000-1500 3281-4921			16.0 9.9	5.6 42	Trace of precipitation Trace of precipitation	3
	12	10.6 51	654.0 25.75 871.93 871.93	755.1 29.73 1006.72 1006.72	-0.7 -0.03 -0.93 -0.93	71		Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas				2.8 37	11.1 52			300-600 984-1968			16.0 9.9	5.6 42
	09	4.4 40	654.7 25.78 872.86 872.86	756.5 29.78 1008.58 1008.58	0.5 0.02 0.67 0.67	97	Calm, no wind	Calm			100%. 10/10. 8 oktas								50-100 164-328			14.0 8.7	3.9 39
	06	3.3 38	654.2 25.76 872.2 872.2	755.5 29.74 1007.25 1007.25	-0.2 -0.01 -0.27 -0.27	93	Wind blowing from the west	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			20–30%. 2/10–3/10. 2 oktas				2.8 37	17.2 63			100-200 328-656			16.0 9.9	2.2 36
	03	5.0 41	654.4 25.76 872.46 872.46	755.8 29.76 1007.65 1007.65	0.0 0 0 0	93	Calm, no wind	Calm			100%. 10/10. 8 oktas								2500 or more, or no clouds. 8202 or more, or no clouds.			16.0 9.9	3.9 39
	00	7.8 46	654.4 25.76 872.46 872.46	755.2 29.73 1006.85 1006.85	0.4 0.02 0.53 0.53	79	Wind blowing from the south-west	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			no clouds no clouds no clouds				6.7 44	15.6 60						16.0 9.9	4.4 40	9.0 0.35	6
April 11, Saturday	21	9.4 49	654.0 25.75 871.93 871.93	755.3 29.74 1006.98 1006.98	1.9 0.07 2.53 2.53	74	Wind blowing from the south-west	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			100%. 10/10. 8 oktas	Rain, not freezing, continuous, slight at time of observation.							1500-2000 4921-6562			16.0 9.9	5.0 41	9.0 0.35	3