Weather archive in Lang Son

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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 31, Sunday	04	25.3 78	733.6 28.88 978.05 978.05	756.0 29.76 1007.92 1007.92	0.2 0.01 0.27 0.27	95	Calm, no wind	Calm			100%. 10/10. 8 oktas	Rain, not freezing, continuous, slight at time of observation.	Rain.	Cloud covering more than 1/2 of the sky throughout the appropriate period.			Cumulus and Stratocumulus other than Stratocumulus cumulogenitus, with bases at different levels.	100%. 10/10. 8 oktas	300-600 984-1968			10.0 6.2	24.4 76
2026 May 31, Sunday	01	26.1 79	733.4 28.87 977.79 977.79	755.8 29.76 1007.65 1007.65		93	Calm, no wind	Calm			70 – 80%. 7/10 – 8/10. 6 oktas						Cumulus and Stratocumulus other than Stratocumulus cumulogenitus, with bases at different levels.	70 – 80%. 7/10 – 8/10. 6 oktas	300-600 984-1968			10.0 6.2	24.8 77
May 30, Saturday	19	29.5 85	732.2 28.83 976.19 976.19	754.2 29.69 1005.52 1005.52	-0.1 -0 -0.13 -0.13	75	Calm, no wind	Calm			70 – 80%. 7/10 – 8/10. 6 oktas					32.9 91	Cumulus mediocris or congestus, with or without Cumulus of species fractus or humilis or Stratocumulus, all having their bases at the same level.	20–30%. 2/10–3/10. 2 oktas	600-1000 1968-3281	No Altocumulus, Altostratus or Nimbostratus.	Cirrostratus not progressively invading the sky and not entirely covering it.	10.0 6.2	24.5 76
	16	32.2 90	732.3 28.83 976.32 976.32	754.1 29.69 1005.38 1005.38	-1.9 -0.07 -2.53 -2.53	60	Calm, no wind	Calm			50%. 5/10. 4 oktas						Cumulus mediocris or congestus, with or without Cumulus of species fractus or humilis or Stratocumulus, all having their bases at the same level.	40%. 4/10. 3 oktas	600-1000 1968-3281	No Altocumulus, Altostratus or Nimbostratus.	Cirrus fibratus, sometimes uncinus, not progressively invading the sky.	15.0 9.3	23.4 74
	13	31.7 89	734.2 28.91 978.85 978.85	756.1 29.77 1008.05 1008.05	-1.3 -0.05 -1.73 -1.73	59	Wind blowing from the north	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas						Cumulus mediocris or congestus, with or without Cumulus of species fractus or humilis or Stratocumulus, all having their bases at the same level.	20–30%. 2/10–3/10. 2 oktas	600-1000 1968-3281	No Altocumulus, Altostratus or Nimbostratus.	Cirrostratus not progressively invading the sky and not entirely covering it.	15.0 9.3	22.8 73
	10	28.1 83	735.5 28.96 980.59 980.59	757.8 29.83 1010.32 1010.32		78	Wind blowing from the north-west	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas						Cumulus humilis or Cumulus fractus other than of bad weather, or both.	10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0	600-1000 1968-3281	No Altocumulus, Altostratus or Nimbostratus.	Cirrostratus not progressively invading the sky and not entirely covering it.	15.0 9.3	23.9 75
	04	23.6 74	732.8 28.85 976.99 976.99	755.2 29.73 1006.85 1006.85		95	Wind blowing from the west	Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft)			20–30%. 2/10–3/10. 2 oktas						Cumulus mediocris or congestus, with or without Cumulus of species fractus or humilis or Stratocumulus, all having their bases at the same level.	20–30%. 2/10–3/10. 2 oktas	600-1000 1968-3281	No Altocumulus, Altostratus or Nimbostratus.	No Cirrus, Cirrocumulus or Cirrostratus.	10.0 6.2	22.7 73