Weather archive on Mount Washington (AWS)

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Date / Local time

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ff3

RRR

sss

2026
August 28,
Friday

9.9

607.5

-0.3

100

Wind blowing from the west

Near gale

(15 m/s)

Sky obscured by fog and/or other meteorological phenomena.

Fog or ice fog, sky invisible, no appreciable change during the preceding hour.

Fog or ice fog or thick haze.

less than 0.1

9.9

10.2

607.8

-0.1

100

Wind blowing from the west-southwest

Near gale

(16 m/s)

Sky obscured by fog and/or other meteorological phenomena.

Fog or ice fog, sky invisible, no appreciable change during the preceding hour.

Shower(s).

Fog or ice fog or thick haze.

11.3

less than 0.1

10.2

1.0

August 27,
Thursday

10.1

607.9

0.0

100

Wind blowing from the south-west

Near gale

(15 m/s)

Sky obscured by fog and/or other meteorological phenomena.

Fog or ice fog, sky invisible, no appreciable change during the preceding hour.

Shower(s).

Fog or ice fog or thick haze.

less than 0.1

10.1

11.0

607.9

-0.6

100

Wind blowing from the south-west

Strong breeze

(13 m/s)

Sky obscured by fog and/or other meteorological phenomena.

Rain shower(s), slight.

Thunderstorm(s) with or without precipitation.

Shower(s).

7.2

11.3

less than 0.1

11.0

12.0

10.9

608.5

-0.2

100

Wind blowing from the south-southwest

Strong breeze

(12 m/s)

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

10.9

10.6

608.7

-0.4

100

Wind blowing from the south

Strong breeze

(12 m/s)

Sky obscured by fog and/or other meteorological phenomena.

Fog or ice fog, sky invisible, no appreciable change during the preceding hour.

Fog or ice fog or thick haze.

Cloud covering more than 1/2 of the sky throughout the appropriate period.

7.2

10.7

less than 0.1

10.6

9.7

609.1

0.1

Wind blowing from the south-west

Strong breeze

(13 m/s)

90 or more, but not 100%

Fog or ice fog, sky visible, has begun or has become thicker during the preceding hour.

Fog or ice fog or thick haze.

Cloud covering more than 1/2 of the sky throughout the appropriate period.

Stratocumulus cumulogenitus.

70 – 80%.

Less than 50

Altocumulus translucidus at a single level.

Cirrus spissatus, in patches or entangled sheaves, which usually do not increase and sometimes seem to be the remains of the upper part of a Cumulonimbus; or Cirrus castellanus or floccus.

0.1

9.4

8.0

609.0

0.2

Wind blowing from the west-southwest

Near gale

(14 m/s)

90 or more, but not 100%

Fog or ice fog, sky visible, has begun or has become thicker during the preceding hour.

Fog or ice fog or thick haze.

Cloud covering more than 1/2 of the sky throughout the appropriate period.

7.2

Stratus nebulosus or Stratus fractus other than of bad weather, or both.

90 or more, but not 100%

Less than 50

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.

0.1

7.8

7.9

608.8

-0.3

Wind blowing from the south-southwest

Strong breeze

(11 m/s)

100%.

Fog or ice fog, sky visible (has become thinner during the preceding hour).

Fog or ice fog or thick haze.

Cloud covering more than 1/2 of the sky throughout the appropriate period.

Stratocumulus cumulogenitus.

70 – 80%.

Less than 50

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 covering the whole sky.

0.1

7.8