CHAMONIX VALLEY AND MONT-BLANC AREA WEATHER FORECAST


Matsuo Bashō
The pine wind
Circling around the eaves—
Autumn deepens
ISSUED AT 19:05 ON SATURDAY OCTOBER 25, 2014
VALID FROM : SATURDAY OCTOBER 25 -- UNTIL : FRIDAY OCTOBER 31 2014

GENERAL SYNOPSIS
Weak disturbance crossing over the Alps from the northwest in the evening and overnight. The pressure field being strengthening from the northeast by the same time, it is not expected to triggering precipitation. Fine sunny condition resuming with temperature slightly above seasonal average from Sunday and lasting until Wednesday. Further outlook is uncertain.
SATURDAY EVENING OCTOBER 25 - AND OVERNIGHT
Cloudy - probably no precipitation
SKY CONDITION : cloudy to mostly cloudy in the first part of the night - becoming cloudy with clear spells.
PRECIPITATION : probably none.
WIND - ground level : variable light.
WIND - mid mountain : mainly N - light.
WIND - high mountain : NW moderate -> NNE light to moderate.
TEMPERATURE : low +2°C.
ISOTHERM 0°C : 2800 -> 2700 -> 2900 m.
ISOTHERM -10°C : 4500 m.
Less cloud over the Upper Aosta Valley.
TOMORROW - SUNDAY OCTOBER 26
Becoming sunny in the morning - mild on sunny slopes in the afternoon
SKY CONDITION : locally cloudy early in the morning - otherwise clear or partly cloudy. period of sunshine close to 85%.
PRECIPITATION : none.
WIND - ground level : variable light.
WIND - mid mountain : mainly N - light.
WIND - high mountain : NNE light to moderate -> NE moderate.
TEMPERATURE : low +2°C - high +15°C.
ISOTHERM 0°C : 2900 -> 3100 m.
ISOTHERM -10°C : 4500 -> 4700 m.
Globally cooler atmosphere, although milder on sunny slopes in the afternoon.
SUNDAY TO MONDAY NIGHT - OCTOBER 26 TO 27
Clear - cold by dawn
SKY CONDITION  : clear or partly cloudy.
PRECIPITATION : none.
WIND - aloft : NE moderate.
TEMPERATURE : low -1°C.
Temperature inversion towards 1500 m.
MONDAY OCTOBER 27
Sunny ‑ cool in the morning - mild on sunny slopes in the afternoon
SKY CONDITION : clear or partly cloudy. Period of sunshine close to 90%.
PRECIPITATION : none.
WIND - aloft : NE moderate.
TEMPERATURE : low -1 °C - high +15°C.
Same kind of weather likely over the Upper Aosta Valley and the bordering Valais.
TUESDAY OCTOBER 28
Sunny ‑ cool in the morning - mild on sunny slopes in the afternoon
SKY CONDITION : clear or partly cloudy. Period of sunshine close to 90%.
PRECIPITATION : none.
WIND - aloft : NE light to moderate.
TEMPERATURE : low -1°C - high +15°C.
Still slightly uncertain.
EXTENDED OUTLOOK UNTIL FRIDAY OCTOBER 31 2014

Wednesday to Friday : fine autumnal weather ‑ sunny ‑ cool in the morning ‑ mild in the afternoon ‑ possibly cloudy on Wednesday evening and during the following night.

Forecast reliability : fairly good until Monday - poor thereafter.

ReportsAs a reminder, today in Chamonix, the sun rises at 07:04:57 and goes down at 17:27:56.
45.55 N 6.51 E - Altitude 1040 m
25 October 08:00
Temperature +5°C
Relative humidity 90%
Wind 0 km/h
Sea level pressure 1020 hpa - rising slowly
Pressure at 1042 m 901 mb
Precipitation last 6h 0.0 mm
Skies cloudy
Visibility 40000 m
Altitude 3845 m
25 October 08:00
Temperature -7°C
Wind NE 20 km/h
Altitude 2250 m
25 October 08:00
Snow depth 0 cm
Wind 5 km/h
Gusts 10 km/h
Temperature +5°C