CHAMONIX VALLEY AND MONT-BLANC AREA WEATHER FORECAST
Eugène Delacroix, La Liberté guidant le peuple
ISSUED AT 07:55 SUNDAY JUNE 26
VALID FROM : SUNDAY JUNE 26 ‑‑ UNTIL : FRIDAY JULY 1 2016

GENERAL SYNOPSIS
Azores high ridge currently extending towards Switzerland is expected to going over 1020 hpa by this evening. • A lot of cloud will remain sticked to the slopes in the morning; il will be rising up and breaking in places, then sunny spells will be spreading some more during the afternoon in a slightly colder atmosphere than seasonal average. • Fair weather which is expected to setting up on Monday will probably be lasting until the income of a fairly deep low towards the Northern British Isles on Wednesday morning; linked disturbance proceeding towards the Alps from the west is expected to triggering a thundery deterioration in the afternoon.
TODAY - SUNDAY JUNE 26
Changeable and cooler ‑ sunny spells spreading out during the afternoon
SKY CONDITION : extended cloud patches rising up along the slopes in the morning, then growing as cumulus ‑ sunny spells spreading out over the afternoon hours. Period of sunshine close to 45%.
PRECIPITATION : probably none.
WIND - ground level : calm ‑> SW light ‑> calm.
WIND - mid mountain : WSW light.
WIND - high mountain : WSW ‑> W moderate.
TEMPERATURE : low +13°C - high +20°C.
ISOTHERM 0°C : 3900 ‑> 3600 m.
ISOTHERM -10°C : 5400 ‑> 5200 m.
OVERNIGHT
Clear high up ‑ cloud patches in the valley ‑ somewhat cool
SKY CONDITION : clear high up ‑ some cloud patches sticking to the slopes in the valley.
PRECIPITATION : none.
WIND - aloft : W ‑> NW moderate.
TEMPERATURE : low +10°C.
MONDAY JUNE 27
Fair weather ‑ cool in the morning ‑ rising highs
SKY CONDITION : clear or partly cloudy ‑ cumulus cloud growing over the slopes in the afternoon. Period of sunshine close to 80%.
PRECIPITATION : none.
WIND - aloft : NW moderate.
TEMPERATURE : low +10 °C - high +22°C.
TUESDAY JUNE 28
Fair summer weather ‑ cool in the morning ‑ hot in the afternoon
SKY CONDITION : clear or partly cloudy. Period of sunshine close to 90%.
PRECIPITATION : none.
WIND - aloft : WNW ‑> WSW moderate.
TEMPERATURE : dropping lows ‑ rising highs.
EXTENDED OUTLOOK UNTIL FRIDAY JULY 1 2016

Wednesday : sunny morning ‑ becoming mostly cloudy in the afternoon ‑ fairly strong SW high up ‑ rainy‑thundery disturbance crossing over in the evening and during the following night. Thursday : changeable weather within the disturbance’s tail ‑ sunny spells and showers in turn. Friday : fair summer weather ‑ hot in the afternoon ‑ evening shower slight risk.

Forecast reliability : fairly good until Tuesday ‑ poor thereafter.

ReportsAs a reminder, today in Chamonix, the sun rises at 05:43:53 and goes down at 21:27:14.
45.55 N 6.51 E - Altitude 1040 m
25 June 07:00
Temperature +16°C
Relative humidity 88%
Wind 0 km/h
Sea level pressure 1017 hpa - steady
Pressure at 1042 m 901 mb
Precipitation last 6h 12.0 mm
Skies cloudy - recent thundery shower
Visibility 15000 m
Altitude 3845 m
25 June 07:00
Temperature +1°C
Wind SW 40 km/h
Altitude 2250 m
25 June 06:00
Snow depth 50 cm
Wind 10 km/h
Gusts 20 km/h
Temperature +8°C