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 December 8, Monday	16	23.6 74	737.8 29.05 983.65 983.65	760.6 29.94 1014.05 1014.05	-1.4 -0.06 -1.87 -1.87	57	Calm, no wind	Calm			10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0						Cumulonimbus calvus, with or without Cumulus, Stratocumulus or Stratus.	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.	No Cirrus, Cirrocumulus or Cirrostratus.	15.0 9.3	14.5 58
	13	23.0 73	739.2 29.1 985.52 985.52	761.9 30 1015.78 1015.78	-2.5 -0.1 -3.33 -3.33	57	Wind blowing from the north	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 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.	15.0 9.3	14.1 57	Trace of precipitation Trace of precipitation	18
	10	20.6 69	741.7 29.2 988.85 988.85	764.8 30.11 1019.65 1019.65	0.4 0.02 0.53 0.53	64	Wind blowing from the east	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			20–30%. 2/10–3/10. 2 oktas						Cumulus humilis or Cumulus fractus other than of bad weather, or both.	20–30%. 2/10–3/10. 2 oktas	300-600 984-1968	No Altocumulus, Altostratus or Nimbostratus.	No Cirrus, Cirrocumulus or Cirrostratus.	15.0 9.3	13.6 56
	07	17.8 64	741.3 29.19 988.32 988.32	764.5 30.1 1019.25 1019.25	1.4 0.06 1.87 1.87	80	Calm, no wind	Calm			90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas				17.8 64		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	14.3 58	Trace of precipitation Trace of precipitation	12
	04	18.0 64	739.9 29.13 986.45 986.45	763.1 30.04 1017.38 1017.38	-0.3 -0.01 -0.4 -0.4	80	Wind blowing from the north	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			100%. 10/10. 8 oktas						Cumulus humilis or Cumulus fractus other than of bad weather, or both.	40%. 4/10. 3 oktas	300-600 984-1968	Altostratus opacus or Nimbostratus.		10.0 6.2	14.5 58
	01	18.8 66	740.2 29.14 986.85 986.85	763.3 30.05 1017.65 1017.65	0.3 0.01 0.4 0.4	82	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.			Cumulus humilis or Cumulus fractus other than of bad weather, or both.	60%. 6/10. 5 oktas	300-600 984-1968	Altostratus opacus or Nimbostratus.		10.0 6.2	15.7 60	Trace of precipitation Trace of precipitation	6
December 7, Sunday	22	18.8 66	739.9 29.13 986.45 986.45	763.1 30.04 1017.38 1017.38	0.9 0.04 1.2 1.2	90	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.			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	17.1 63
	19	19.4 67	739.0 29.09 985.25 985.25	762.0 30 1015.92 1015.92	1.2 0.05 1.6 1.6	82	Calm, no wind	Calm			70 – 80%. 7/10 – 8/10. 6 oktas					25.3 78	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	16.2 61
	16	23.8 75	737.8 29.05 983.65 983.65	760.5 29.94 1013.92 1013.92	-0.9 -0.04 -1.2 -1.2	66	Wind blowing from the north-west	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			no clouds no clouds no clouds											15.0 9.3	17.0 63