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 September 9, Wednesday | 20 | 9.8 50 | 606.4 23.87 808.47 808.47 | -1.8 -0.07 -2.4 -2.4 | 100 | Wind blowing from the south-southwest | Strong breeze (13 m/s) (47 km/h) (29 miles/hour) (25 knots) (6 Bft) | Sky obscured by fog and/or other meteorological phenomena. Sky obscured by fog and/or other meteorological phenomena. Sky obscured by fog and/or other meteorological phenomena. | Rain, not freezing, continuous, moderate at time of observation. | Shower(s). | Rain. | 4.3 40 | 9.9 50 | less than 0.1 less than 0.06 | 9.8 50 | 3.0 0.12 | 6 | ||||||||||||
17 | 9.4 49 | 608.2 23.94 810.87 810.87 | -1.8 -0.07 -2.4 -2.4 | 100 | Wind blowing from the west-southwest | Strong gale (21 m/s) (76 km/h) (47 miles/hour) (41 mile/hour) (9 Bft) | Sky obscured by fog and/or other meteorological phenomena. Sky obscured by fog and/or other meteorological phenomena. Sky obscured by fog and/or other meteorological phenomena. | Rain shower(s), slight. | Shower(s). | Fog or ice fog or thick haze. | less than 0.1 less than 0.06 | 9.4 49 | |||||||||||||||||
14 | 8.2 47 | 610.0 24.02 813.27 813.27 | -0.9 -0.04 -1.2 -1.2 | 95 | Wind blowing from the west-southwest | Near gale (14 m/s) (50 km/h) (31 mile/hour) (27 knots) (7 Bft) | 100%. 10/10. 8 oktas | Rain shower(s), slight. | Shower(s). | Rain. | 4.3 40 | 9.2 49 | Stratocumulus cumulogenitus. | 100%. 10/10. 8 oktas | Less than 50 Less than 50 | 0.2 0.1 | 7.5 46 | 1.0 0.04 | 6 | ||||||||||
11 | 9.2 49 | 610.9 24.05 814.47 814.47 | 100 | Wind blowing from the west-southwest | Fresh breeze (9 m/s) (32 km/h) (20 miles/hour) (17 knots) (5 Bft) | Sky obscured by fog and/or other meteorological phenomena. Sky obscured by fog and/or other meteorological phenomena. Sky obscured by fog and/or other meteorological phenomena. | Rain shower(s), slight. | Shower(s). | Rain. | less than 0.1 less than 0.06 | 9.2 49 | ||||||||||||||||||
08 | 7.6 46 | 612.1 24.1 816.07 816.07 | 100 | Wind blowing from the west | Near gale (15 m/s) (54 km/h) (34 mph) (29 knots) (7 Bft) | Sky obscured by fog and/or other meteorological phenomena. Sky obscured by fog and/or other meteorological phenomena. Sky obscured by fog and/or other meteorological phenomena. | Rain, not freezing, continuous, slight at time of observation. | Rain. | Fog or ice fog or thick haze. | 4.3 40 | 9.0 48 | less than 0.1 less than 0.06 | 7.6 46 | Trace of precipitation Trace of precipitation | 6 | ||||||||||||||
05 | 7.6 46 | 612.1 24.1 816.07 816.07 | 0.9 0.04 1.2 1.2 | 100 | Wind blowing from the west | Near gale (15 m/s) (54 km/h) (34 mph) (29 knots) (7 Bft) | Sky obscured by fog and/or other meteorological phenomena. Sky obscured by fog and/or other meteorological phenomena. Sky obscured by fog and/or other meteorological phenomena. | Rain, not freezing, continuous, slight at time of observation. | Rain. | Fog or ice fog or thick haze. | 4.3 40 | 9.0 48 | less than 0.1 less than 0.06 | 7.6 46 | Trace of precipitation Trace of precipitation | 6 | |||||||||||||
02 | 4.8 41 | 611.2 24.06 814.87 814.87 | -0.8 -0.03 -1.07 -1.07 | 68 | Wind blowing from the south-west | Moderate breeze (7 m/s) (25 km/h) (16 miles/hour) (14 knots) (4 Bft) | 40%. 4/10. 3 oktas | 4.4 40 | 9.0 48 | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 20–30%. 2/10–3/10. 2 oktas | 2500 or more, or no clouds. 8202 or more, or no clouds. | Altostratus translucidus. | Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole, but the continuous veil does not reach 45 degrees above the horizon. | 71.0 44.1 | -0.6 31 | |||||||||||||
| September 8, Tuesday | 23 | 7.8 46 | 612.0 24.09 815.93 815.93 | 15 | Wind blowing from the south-east | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 20–30%. 2/10–3/10. 2 oktas | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 20–30%. 2/10–3/10. 2 oktas | 2500 or more, or no clouds. 8202 or more, or no clouds. | Altostratus translucidus. | Cirrostratus not progressively invading the sky and not entirely covering it. | 71.0 44.1 | -17.4 1 | |||||||||||||||
20 | 8.8 48 | 611.9 24.09 815.8 815.8 | 0.0 0 0 0 | 11 | Wind blowing from the north | Moderate breeze (7 m/s) (25 km/h) (16 miles/hour) (14 knots) (4 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | Clouds generally forming or developing. | Fog or ice fog or thick haze. | 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. | 5.0 41 | 9.0 48 | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 60%. 6/10. 5 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, but the continuous veil does not reach 45 degrees above the horizon. | 50.0 31.1 | -20.4 -5 | ||||||||||