Weather archive in Ulan Bator

To receive explanations, hover over the appropriate heading

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 12, Friday	08	-22.3 -8	658.2 25.91 877.53 877.53	783.7 30.85 1044.85 1044.85	0.1 0 0.13 0.13	72	Calm, no wind	Calm			50%. 5/10. 4 oktas	Diamond dust (with or without fog).	Snow and/or other types of solid precipitation	Cloud covering more than 1/2 of the sky during part of the appropriate period and covering 1/2 or less during part of the period.	-22.6 -9		No Stratocumulus, Stratus, Cumulus or Cumulonimbus.	50%. 5/10. 4 oktas	2000-2500 6562-8202	Altocumulus translucidus in bands, or one or more layers of Altocumulus translucidus or opacus, progressively invading the sky; these Altocumulus clouds generally thicken as a whole.	No Cirrus, Cirrocumulus or Cirrostratus.		-26.0 -15	Trace of precipitation Trace of precipitation	12			Even layer of loose dry snow covering ground completely.	9 3.5
	05	-21.3 -6	658.1 25.91 877.39 877.39	783.1 30.83 1044.05 1044.05	-0.4 -0.02 -0.53 -0.53	70	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	State of sky on the whole unchanged.	Snow and/or other types of solid precipitation	Cloud covering more than 1/2 of the sky throughout the appropriate period.			No Stratocumulus, Stratus, Cumulus or Cumulonimbus.	90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas	2000-2500 6562-8202	Altostratus translucidus.	No Cirrus, Cirrocumulus or Cirrostratus.		-25.3 -14
	02	-20.8 -5	658.5 25.93 877.93 877.93	783.3 30.84 1044.31 1044.31	-0.2 -0.01 -0.27 -0.27	69	Wind blowing from the east	Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft)			100%. 10/10. 8 oktas	Continuous fall of snowflakes, slight at time of observation.	Snow and/or other types of solid precipitation	Cloud covering more than 1/2 of the sky throughout the appropriate period.			No Stratocumulus, Stratus, Cumulus or Cumulonimbus.	100%. 10/10. 8 oktas	2000-2500 6562-8202	Altostratus opacus or Nimbostratus.			-25.0 -13
December 11, Thursday	23	-21.6 -7	658.7 25.93 878.19 878.19	784.0 30.87 1045.25 1045.25	0.1 0 0.13 0.13	66	Wind blowing from the east-northeast	Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft)			60%. 6/10. 5 oktas	Visibility reduced by smoke, e.g. veldt or forest fires, industrial smoke or volcanic ashes.	Cloud covering more than 1/2 of the sky throughout the appropriate period.	Cloud covering more than 1/2 of the sky throughout the appropriate period.			No Stratocumulus, Stratus, Cumulus or Cumulonimbus.	60%. 6/10. 5 oktas	2000-2500 6562-8202	Altocumulus translucidus in bands, or one or more layers of Altocumulus translucidus or opacus, progressively invading the sky; these Altocumulus clouds generally thicken as a whole.	No Cirrus, Cirrocumulus or Cirrostratus.		-26.3 -15
	20	-21.9 -7	658.6 25.93 878.06 878.06	784.0 30.87 1045.25 1045.25	0.6 0.02 0.8 0.8	63	Wind blowing from the east-southeast	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas					-19.9 -4	No Stratocumulus, Stratus, Cumulus or Cumulonimbus.	20–30%. 2/10–3/10. 2 oktas	2000-2500 6562-8202	Altocumulus translucidus at a single level.	Cirrus uncinus or fibratus, or both, progressively invading the sky; they generally thicken as a whole.		-27.1 -17
	17	-20.9 -6	658.0 25.91 877.26 877.26	782.7 30.81 1043.51 1043.51	-0.1 -0 -0.13 -0.13	59	Wind blowing from the east-southeast	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas	Visibility reduced by smoke, e.g. veldt or forest fires, industrial smoke or volcanic ashes.	Cloud covering more than 1/2 of the sky throughout the appropriate period.	Cloud covering more than 1/2 of the sky throughout the appropriate period.			No Stratocumulus, Stratus, Cumulus or Cumulonimbus.	70 – 80%. 7/10 – 8/10. 6 oktas	2000-2500 6562-8202	Altocumulus translucidus or opacus in two or more layers, or Altocumulus opacus in a single layer, not progressively invading the sky, or Altocumulus with Altostratus or Nimbostratus.	No Cirrus, Cirrocumulus or Cirrostratus.	20.0 12.4	-26.8 -16
	14	-20.7 -5	658.1 25.91 877.39 877.39	782.8 30.82 1043.65 1043.65	-0.6 -0.02 -0.8 -0.8	54	Wind blowing from the south-east	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			50%. 5/10. 4 oktas	Visibility reduced by smoke, e.g. veldt or forest fires, industrial smoke or volcanic ashes.	Cloud covering more than 1/2 of the sky throughout the appropriate period.	Cloud covering more than 1/2 of the sky throughout the appropriate period.			No Stratocumulus, Stratus, Cumulus or Cumulonimbus.	20–30%. 2/10–3/10. 2 oktas	2000-2500 6562-8202	Patches (often lenticular) of Altocumulus translucidus, continually changing and occurring at one or more levels.	Cirrus uncinus or fibratus, or both, progressively invading the sky; they generally thicken as a whole.	20.0 12.4	-27.6 -18
	11	-23.1 -10	658.7 25.93 878.19 878.19	784.8 30.9 1046.31 1046.31	0.1 0 0.13 0.13	60	Wind blowing from the east	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			60%. 6/10. 5 oktas	Visibility reduced by smoke, e.g. veldt or forest fires, industrial smoke or volcanic ashes.	Cloud covering more than 1/2 of the sky throughout the appropriate period.	Cloud covering more than 1/2 of the sky during part of the appropriate period and covering 1/2 or less during part of the period.			No Stratocumulus, Stratus, Cumulus or Cumulonimbus.	no clouds no clouds no clouds	2500 or more, or no clouds. 8202 or more, or no clouds.	No Altocumulus, Altostratus or Nimbostratus.	Cirrostratus not progressively invading the sky and not entirely covering it.	10.0 6.2	-28.7 -20
	08	-26.7 -16	658.6 25.93 878.06 878.06	786.6 30.97 1048.71 1048.71	0.0 0 0 0	69	Wind blowing from the east-southeast	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			no clouds no clouds no clouds				-26.9 -16								-30.7 -23					Even layer of loose dry snow covering ground completely.	9 3.5