Weather archive on Mount Washington (AWS)

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 March 13, Thursday	16	-7.3 19	601.7 23.69 802.2 802.2			70	Wind blowing from the west-southwest	Near gale (15 m/s) (54 km/h) (34 mph) (29 knots) (7 Bft)			100%. 10/10. 8 oktas						Stratocumulus other than Stratocumulus cumulogenitus.	20–30%. 2/10–3/10. 2 oktas		Altostratus opacus or Nimbostratus.	Cirrostratus covering the whole sky.	71.0 44.1	-11.9 11
	15	-7.3 19	601.7 23.69 802.2 802.2			70	Wind blowing from the west-southwest	Near gale (15 m/s) (54 km/h) (34 mph) (29 knots) (7 Bft)			100%. 10/10. 8 oktas						Stratocumulus other than Stratocumulus cumulogenitus.	20–30%. 2/10–3/10. 2 oktas		Altostratus opacus or Nimbostratus.	Cirrostratus covering the whole sky.	71.0 44.1	-11.9 11
	13	-6.6 20	601.8 23.69 802.33 802.33		0.3 0.01 0.4 0.4	69	Wind blowing from the west-southwest	Strong breeze (13 m/s) (47 km/h) (29 miles/hour) (25 knots) (6 Bft)			100%. 10/10. 8 oktas	Clouds generally forming or developing.	Fog or ice fog or thick haze.	Cloud covering more than 1/2 of the sky throughout the appropriate period.	-12.7 9	-6.6 20	Stratocumulus other than Stratocumulus cumulogenitus.	10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0		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.	Cirrostratus covering the whole sky.	71.0 44.1	-11.4 11
	10	-8.9 16	601.5 23.68 801.93 801.93		0.9 0.04 1.2 1.2	77	Wind blowing from the west	Strong breeze (11 m/s) (40 km/h) (25 miles/hour) (21 mile/hour) (6 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas	Clouds generally dissolving or becoming less developed.	Fog or ice fog or thick haze.	Cloud covering more than 1/2 of the sky throughout the appropriate period.			Stratocumulus cumulogenitus.	40%. 4/10. 3 oktas		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.	71.0 44.1	-12.3 10
	07	-11.2 12	600.6 23.65 800.73 800.73		0.6 0.02 0.8 0.8	76	Wind blowing from the west-southwest	Fresh breeze (9 m/s) (32 km/h) (20 miles/hour) (17 knots) (5 Bft)			100%. 10/10. 8 oktas	Clouds generally forming or developing. Depth of newly fallen snow is 1 cm. 0.4 inches.	Snow and/or other types of solid precipitation	Cloud covering more than 1/2 of the sky throughout the appropriate period.	-11.7 11		Stratus nebulosus or Stratus fractus other than of bad weather, or both.	90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas		Altostratus opacus or Nimbostratus.		24.0 14.9	-14.6 6	0.5 0.02	6
	04	-11.1 12	600.0 23.62 799.93 799.93		0.1 0 0.13 0.13	77	Wind blowing from the west-southwest	Strong breeze (11 m/s) (40 km/h) (25 miles/hour) (21 mile/hour) (6 Bft)			90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas	Snow not falling as shower(s).	Snow and/or other types of solid precipitation	Cloud covering more than 1/2 of the sky throughout the appropriate period.			Stratus nebulosus or Stratus fractus other than of bad weather, or both.	40%. 4/10. 3 oktas	300-600 984-1968	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.	71.0 44.1	-14.3 6
	01	-11.2 12	599.9 23.62 799.8 799.8		0.2 0.01 0.27 0.27	52	Wind blowing from the west-southwest	Moderate breeze (7 m/s) (25 km/h) (16 miles/hour) (14 knots) (4 Bft)			60%. 6/10. 5 oktas	Clouds generally dissolving or becoming less developed.	Snow and/or other types of solid precipitation	Cloud covering more than 1/2 of the sky throughout the appropriate period.		-9.0 16	No Stratocumulus, Stratus, Cumulus or Cumulonimbus.	40%. 4/10. 3 oktas	1000-1500 3281-4921	Patches (often lenticular) of Altocumulus translucidus, continually changing and occurring at one or more levels.	Cirrus fibratus, sometimes uncinus, not progressively invading the sky.	71.0 44.1	-19.1 -2	Trace of precipitation Trace of precipitation	6
March 12, Wednesday	22	-10.7 13	599.7 23.61 799.53 799.53		0.4 0.02 0.53 0.53	42	Wind blowing from the north-northwest	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas	Clouds generally dissolving or becoming less developed.	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.	50%. 5/10. 4 oktas	1000-1500 3281-4921	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.	71.0 44.1	-21.3 -6
	19	-11.3 12	599.3 23.59 799 799		0.4 0.02 0.53 0.53	54	Wind blowing from the north-northwest	Strong breeze (13 m/s) (47 km/h) (29 miles/hour) (25 knots) (6 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.	-15.4 4	-11.3 12	Stratus nebulosus or Stratus fractus other than of bad weather, or both.	60%. 6/10. 5 oktas	100-200 328-656	Altostratus opacus or Nimbostratus.	Cirrostratus covering the whole sky.	50.0 31.1	-18.9 -2	Trace of precipitation Trace of precipitation	6
	16	-11.7 11	598.9 23.58 798.47 798.47		0.9 0.04 1.2 1.2	36	Wind blowing from the north-northwest	Gale (19 m/s) (68 km/h) (43 mph) (37 knots) (8 Bft)			100%. 10/10. 8 oktas						Stratus nebulosus or Stratus fractus other than of bad weather, or both.	50%. 5/10. 4 oktas	100-200 328-656	Altostratus opacus or Nimbostratus.		71.0 44.1	-23.9 -11