Weather archive in Chiang Rai

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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 September 18, Friday	17	28.2 83				77	Wind blowing from the east-northeast	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)							22.2 72	30.1 86							23.8 75
	16	29.9 86	722.5 28.44 963.25 963.25	754.7 29.71 1006.18 1006.18	-1.8 -0.07 -2.4 -2.4	70	Wind blowing from the north-east	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas						Stratocumulus other than Stratocumulus cumulogenitus.	40%. 4/10. 3 oktas	600-1000 1968-3281	Altostratus opacus or Nimbostratus.	Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole; the continuous veil extends more than 45 degrees above the horizon, without the sky being totally covered.	10.0 6.2	23.8 75
	15	27.6 82				82	Wind blowing from the north	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)							22.2 72	31.0 88							24.2 76
	14	29.2 85				76	Wind blowing from the north-northeast	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)							22.2 72	31.2 88							24.6 76
	13	26.7 80	724.3 28.52 965.65 965.65	756.9 29.8 1009.12 1009.12		87	Calm, no wind	Calm			70 – 80%. 7/10 – 8/10. 6 oktas	Clouds generally dissolving or becoming less developed.	Rain.	Cloud covering more than 1/2 of the sky throughout the appropriate period.			Stratocumulus other than Stratocumulus cumulogenitus.	50%. 5/10. 4 oktas	600-1000 1968-3281	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.	Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole; the continuous veil extends more than 45 degrees above the horizon, without the sky being totally covered.	10.0 6.2	24.4 76	0.2 0.01	6
	12	25.5 78	725.3 28.56 966.99 966.99	757.0 29.8 1009.25 1009.25			Wind blowing from the north-northeast	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)							22.2 72									No precipitation No precipitation	1
	11	25.3 78	726.0 28.58 967.92 967.92	757.6 29.83 1010.05 1010.05			Wind blowing from the north-northeast	Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft)							22.2 72									No precipitation No precipitation	1
	10	25.3 78	725.5 28.56 967.25 967.25	758.4 29.86 1011.12 1011.12	1.2 0.05 1.6 1.6	91	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.			Stratocumulus other than Stratocumulus cumulogenitus.	70 – 80%. 7/10 – 8/10. 6 oktas	600-1000 1968-3281	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.		10.0 6.2	23.8 75	0.2 0.01	3
	09	24.6 76	725.7 28.57 967.52 967.52	757.3 29.81 1009.65 1009.65			Wind blowing from the east-southeast	Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft)							22.2 72	31.2 88								No precipitation No precipitation	1
	08	24.0 75	725.3 28.56 966.99 966.99	757.0 29.8 1009.25 1009.25			Wind blowing from the north	Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft)							22.2 72	31.2 88								No precipitation No precipitation	1
	07	23.3 74	724.3 28.52 965.65 965.65	757.3 29.81 1009.65 1009.65	0.7 0.03 0.93 0.93	97	Calm, no wind	Calm			100%. 10/10. 8 oktas	Rain, not freezing, intermittent, slight at time of observation.	Rain.	Cloud covering more than 1/2 of the sky throughout the appropriate period.	22.5 73		Stratocumulus other than Stratocumulus cumulogenitus.	70 – 80%. 7/10 – 8/10. 6 oktas	600-1000 1968-3281	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.		9.0 5.6	22.8 73	44.0 1.73	24
	06	22.8 73	724.2 28.51 965.52 965.52	755.8 29.76 1007.65 1007.65				Calm							22.2 72	31.2 88								No precipitation No precipitation	1
	05	22.8 73	723.8 28.5 964.99 964.99	755.5 29.74 1007.25 1007.25			Wind blowing from the north-east	Calm							22.2 72	31.2 88								No precipitation No precipitation	1
	04	22.9 73	723.6 28.49 964.72 964.72	756.7 29.79 1008.85 1008.85	-0.1 -0 -0.13 -0.13	99	Calm, no wind	Calm			100%. 10/10. 8 oktas	Rain (not freezing) not falling as shower(s).	Rain.	Cloud covering more than 1/2 of the sky throughout the appropriate period.			Stratocumulus other than Stratocumulus cumulogenitus.	50%. 5/10. 4 oktas	600-1000 1968-3281	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.		10.0 6.2	22.7 73	0.8 0.03	3
	03	22.8 73	723.7 28.49 964.85 964.85	755.4 29.74 1007.12 1007.12			Wind blowing from the north-east	Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft)							22.2 72	31.2 88								No precipitation No precipitation	1
	02	22.6 73	724.0 28.5 965.25 965.25	755.6 29.75 1007.38 1007.38			Wind blowing from the north-northwest	Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft)							22.2 72	31.2 88								1.0 0.04	1
	01	22.4 72	723.7 28.49 964.85 964.85	756.9 29.8 1009.12 1009.12	-0.9 -0.04 -1.2 -1.2	99	Calm, no wind	Calm			100%. 10/10. 8 oktas	Thunderstorm, slight or moderate, without hail, but with rain and/or snow at time of observation.	Thunderstorm(s) with or without 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.			Stratocumulus other than Stratocumulus cumulogenitus.	50%. 5/10. 4 oktas	600-1000 1968-3281	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.		9.0 5.6	22.2 72	42.0 1.65	18
	00	22.3 72	724.9 28.54 966.45 966.45	756.5 29.78 1008.58 1008.58			Wind blowing from the north-east	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)							22.2 72	31.2 88								32.0 1.26	1
September 17, Thursday	23	25.7 78	724.9 28.54 966.45 966.45	756.6 29.79 1008.72 1008.72			Wind blowing from the east-northeast	Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft)							24.8 77	31.2 88								2.0 0.08	1
	22	26.3 79	724.6 28.53 966.05 966.05	757.3 29.81 1009.65 1009.65	1.2 0.05 1.6 1.6	97	Calm, no wind	Calm			70 – 80%. 7/10 – 8/10. 6 oktas						Stratocumulus other than Stratocumulus cumulogenitus.	50%. 5/10. 4 oktas	600-1000 1968-3281	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.	10.0 6.2	25.7 78
	21	26.7 80	724.1 28.51 965.39 965.39	755.8 29.76 1007.65 1007.65			Wind blowing from the south	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)							24.8 77	31.2 88								No precipitation No precipitation	1
	20	27.1 81	723.7 28.49 964.85 964.85	755.4 29.74 1007.12 1007.12			Wind blowing from the south-southwest	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)							24.8 77	31.2 88								No precipitation No precipitation	1
	19	27.5 82	723.4 28.48 964.45 964.45	755.9 29.76 1007.78 1007.78	1.8 0.07 2.4 2.4	87	Wind blowing from the south-southwest	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			40%. 4/10. 3 oktas					31.0 88	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	Patches (often lenticular) of Altocumulus translucidus, continually changing and occurring at one or more levels.	Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole; the continuous veil extends more than 45 degrees above the horizon, without the sky being totally covered.	10.0 6.2	25.1 77
	18	28.3 83				80	Wind blowing from the south-west	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)							24.8 77	31.2 88							24.5 76
	17	30.0 86				67	Wind blowing from the south-southwest	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)							24.8 77	31.2 88							23.3 74