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
2025 July 21, Monday	13	27.8 82	721.2 28.39 961.52 961.52	743.0 29.25 990.59 990.59	-0.6 -0.02 -0.8 -0.8	91	Wind blowing from the north-west	Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft)			100%. 10/10. 8 oktas	Rain, not freezing, continuous, moderate at time of observation.	Rain.	Cloud covering more than 1/2 of the sky throughout the appropriate period.			Stratus fractus or Cumulus fractus of bad weather, or both (pannus), usually below Altostratus or Nimbostratus.	70 – 80%. 7/10 – 8/10. 6 oktas	300-600 984-1968	Altostratus opacus or Nimbostratus.		4.0 2.5	26.2 79	3.0 0.12	18
	10	28.8 84	721.8 28.42 962.32 962.32	743.6 29.28 991.39 991.39	-0.2 -0.01 -0.27 -0.27	75	Wind blowing from the north-west	Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft)			100%. 10/10. 8 oktas						Cumulus and Stratocumulus other than Stratocumulus cumulogenitus, with bases at different levels.	100%. 10/10. 8 oktas	300-600 984-1968			15.0 9.3	24.0 75
	07	27.6 82	722.0 28.43 962.59 962.59	743.9 29.29 991.79 991.79	-0.2 -0.01 -0.27 -0.27	77	Wind blowing from the north-west	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			100%. 10/10. 8 oktas				25.2 77		Cumulus and Stratocumulus other than Stratocumulus cumulogenitus, with bases at different levels.	100%. 10/10. 8 oktas	300-600 984-1968			15.0 9.3	23.3 74
	04	25.2 77	722.2 28.43 962.85 962.85	744.2 29.3 992.19 992.19	-0.8 -0.03 -1.07 -1.07	96	Calm, no wind	Calm			100%. 10/10. 8 oktas						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	24.6 76
	01	25.0 77	723.0 28.46 963.92 963.92	745.0 29.33 993.25 993.25	-0.7 -0.03 -0.93 -0.93	96	Calm, no wind	Calm			100%. 10/10. 8 oktas						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
July 20, Sunday	22	25.1 77	723.7 28.49 964.85 964.85	745.7 29.36 994.19 994.19	0.8 0.03 1.07 1.07	95	Calm, no wind	Calm			100%. 10/10. 8 oktas						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	24.3 76
	19	26.0 79	722.9 28.46 963.79 963.79	745.0 29.33 993.25 993.25	0.2 0.01 0.27 0.27	88	Calm, no wind	Calm			100%. 10/10. 8 oktas	State of sky on the whole unchanged.	Rain.	Cloud covering more than 1/2 of the sky throughout the appropriate period.		32.7 91	Cumulus humilis or Cumulus fractus other than of bad weather, or both.	50%. 5/10. 4 oktas	300-600 984-1968	Altostratus opacus or Nimbostratus.		10.0 6.2	23.8 75	0.8 0.03	24
	16	28.5 83	722.7 28.45 963.52 963.52	744.6 29.31 992.72 992.72	-1.2 -0.05 -1.6 -1.6	78	Wind blowing from the north-west	Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft)			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.			Cumulonimbus capillatus (often with an anvil), with or without Cumulonimbus calvus, Cumulus, Stratocumulus, Stratus or pannus.	50%. 5/10. 4 oktas	300-600 984-1968	Altostratus opacus or Nimbostratus.		10.0 6.2	24.3 76
	13	30.0 86	723.9 28.5 965.12 965.12	745.6 29.35 994.05 994.05	-0.6 -0.02 -0.8 -0.8	77	Wind blowing from the north-west	Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft)			90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas						Cumulus and Stratocumulus other than Stratocumulus cumulogenitus, with bases at different levels.	90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas	300-600 984-1968			15.0 9.3	25.5 78