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Chamonix Weather

CHAMONIX VALLEY AND MONT-BLANC AREA WEATHER FORECAST
ISSUED AT 08:43 WEDNESDAY SEPTEMBER 08 2010
VALID FROM : WEDNESDAY SEPTEMBER 08 -- UNTIL : MONDAY SEPTEMBER 13 2010
GENERAL SYNOPSIS
Low 999 hpa, Northern France, drifting north. Linked disturbance moving away over Switzerland in a strong southerly to southwesterly stream. Dryer air temporarily coming in over the Alps today. New disturbance, less active, crossing over the area by Thursday. High condition probably resuming by Friday.

TODAY - WEDNESDAY SEPTEMBER 08 2010
Changeable - morning showers - sunny spells later
SKY CONDITIONS (cloud - sunshine) : overcast or mostly cloudy early in the morning - becoming cloudy with sunny spells - period of sunshine close to 40%.
PRECIPITATION : showers early in the morning, becoming scattered - rain-snow limit towards 2500 m - dry later.
WIND  - ground level : variable light to moderate.
- mid mountain : SW -> variable light.
- high mountain : S moderate to strong -> W light to moderate.
TEMPERATURE : min +12°C - max +18°C.
ISOTHERM 0°C :  3100 -> 2800 m.
ISOTHERM -10°C :  4900 -> 4600 m.

OVERNIGHT
Changeable - cloudy with clear spells
SKY CONDITIONS (cloud) : cloudy with clear spells.
PRECIPITATION : probably none.
WIND  - aloft : W light to moderate -> light.
TEMPERATURE : +8°C.

TOMORROW - THURSDAY SEPTEMBER 09
Changeable - sunny spells and showers
SKY CONDITIONS (cloud - sunshine) : cloudy with sunny spells in the morning - probably mostly cloudy in the afternoon - period of sunshine close to 40%.
PRECIPITATION : showers in the afternoon - rain-snow limit towards 2500 m.
WIND  - aloft : W -> NNW light.
TEMPERATURE :  min +8°C - max +16°C.

FRIDAY SEPTEMBER 10
Morning cloud - sunny afternoon
SKY CONDITIONS (cloud - sunshine) : cloudy with sunny spells in the morning - partly cloudy in the afternoon - period of sunshine close to 60%.
PRECIPITATION : none.
WIND  - aloft : N moderate.
TEMPERATURE :  dropping lows - rising highs.

EXTENDED OUTLOOK UNTIL MONDAY SEPTEMBER 13 2010
Saturday and Sunday : sunny and mild. Monday : thick cloud crossing over - showers likely.
Forecast reliability : poor.
Reports
Chamonix-ville
45.9 N 6.9 E - Altitude 1042 m
8 September 07:00
Temperature +12 °C
Relative humidity 100 %
Wind 0 km/h
Pressure 1004 hpa - rising
Pressure at 1042 m 888 mb
Precipitation last 6h 5.0 mm
Light rain
Skies overcast
Visibility 5000 m
 Aiguille du Midi
Altitude 3845 m
8 September 07:00
Temperature -4 °C
Wind WNW 10 km/h
Relative humidity %
 Le Lac Blanc
Altitude 2330 m
8 September 07:00
Snow depth 0 cm
Wind 20 km/h
Gusts -- km/h
Temperature +5 °C
Relative humidity -- %


c h a m o n i x - m e t e o . c o m
Chamonix Valley and Mont-Blanc area weather information service