Weather archive on Mount Washington (AWS)

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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 October 11, Sunday	20	4.0 39	607.3 23.91 809.67 809.67		-2.1 -0.08 -2.8 -2.8	90	Wind blowing from the south-southwest	Near gale (15 m/s) (54 km/h) (34 mph) (29 knots) (7 Bft)			100%. 10/10. 8 oktas	Drizzle, not freezing, continuous, slight at time of observation.	Drizzle.	Cloud covering more than 1/2 of the sky throughout the appropriate period.	3.7 39	8.4 47	Stratus nebulosus or Stratus fractus other than of bad weather, or both.	70 – 80%. 7/10 – 8/10. 6 oktas		Altostratus opacus or Nimbostratus.		71.0 44.1	2.5 37	Trace of precipitation Trace of precipitation	6
	17	7.8 46	609.4 23.99 812.47 812.47		-1.4 -0.06 -1.87 -1.87	64	Wind blowing from the south-southwest	Fresh breeze (10 m/s) (36 km/h) (22 mph) (19 knots) (5 Bft)			100%. 10/10. 8 oktas	Precipitation within sight, reaching the ground or the surface of the sea, but distant, i.e. estimated to be more than 5 km from the station.	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.			Stratus nebulosus or Stratus 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	300-600 984-1968	Altostratus opacus or Nimbostratus.		71.0 44.1	1.3 34
	14	8.4 47	610.8 24.05 814.33 814.33		-1.8 -0.07 -2.4 -2.4	41	Wind blowing from the south-west	Fresh breeze (10 m/s) (36 km/h) (22 mph) (19 knots) (5 Bft)			100%. 10/10. 8 oktas					8.4 47	Stratocumulus cumulogenitus.	10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0		Altostratus translucidus.		71.0 44.1	-4.1 25
	11	7.4 45	612.6 24.12 816.73 816.73		-0.8 -0.03 -1.07 -1.07	43	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						No Stratocumulus, Stratus, Cumulus or Cumulonimbus.	60%. 6/10. 5 oktas	2500 or more, or no clouds. 8202 or more, or no clouds.	Altostratus opacus or Nimbostratus.	Cirrostratus covering the whole sky.	71.0 44.1	-4.6 24
	08	8.4 47	613.4 24.15 817.8 817.8		-0.2 -0.01 -0.27 -0.27	48	Wind blowing from the west	Moderate breeze (7 m/s) (25 km/h) (16 miles/hour) (14 knots) (4 Bft)			100%. 10/10. 8 oktas				1.1 34	8.4 47	No Stratocumulus, Stratus, Cumulus or Cumulonimbus.	50%. 5/10. 4 oktas	2500 or more, or no clouds. 8202 or more, or no clouds.	Altostratus opacus or Nimbostratus.	Cirrostratus covering the whole sky.	71.0 44.1	-2.2 28
	05	6.2 43	613.6 24.16 818.07 818.07		-0.3 -0.01 -0.4 -0.4	49	Wind blowing from the west	Fresh breeze (9 m/s) (32 km/h) (20 miles/hour) (17 knots) (5 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas						No Stratocumulus, Stratus, Cumulus or Cumulonimbus.	10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0	2500 or more, or no clouds. 8202 or more, or no clouds.	Altocumulus translucidus at a single level.	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	-3.9 25
	02	3.7 39	613.9 24.17 818.47 818.47		0.6 0.02 0.8 0.8	11	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				-7.7 18	3.7 39	No Stratocumulus, Stratus, Cumulus or Cumulonimbus.	10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0	2500 or more, or no clouds. 8202 or more, or no clouds.	Altocumulus translucidus at a single level.	Cirrostratus not progressively invading the sky and not entirely covering it.	71.0 44.1	-24.0 -11
October 10, Saturday	23	3.4 38	613.3 24.15 817.67 817.67		0.8 0.03 1.07 1.07	13	Wind blowing from the west	Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft)			90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas						No Stratocumulus, Stratus, Cumulus or Cumulonimbus.	10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0	2500 or more, or no clouds. 8202 or more, or no clouds.	Altocumulus translucidus at a single level.	Cirrostratus not progressively invading the sky and not entirely covering it.	71.0 44.1	-22.5 -9
October 10, Saturday	20	1.1 34	612.5 24.11 816.6 816.6		0.2 0.01 0.27 0.27	30	Wind blowing from the north-northwest	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				-7.7 18	1.2 34	No Stratocumulus, Stratus, Cumulus or Cumulonimbus.	60%. 6/10. 5 oktas	2500 or more, or no clouds. 8202 or more, or no clouds.	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.	Cirrostratus not progressively invading the sky and not entirely covering it.	71.0 44.1	-14.7 6