Mountain Weather Forecast & Webcams

Detailed 3 day mountain weather forecast for the entire Mt Blanc valley area

Weather and Webcams Updated daily.

NEXT NIGHT

The sky is clearing—a chill is setting in the valley

Cloud cover: the sky is clearing quickly and completely—a few patches of fog near bodies of water in the valley—0°C isotherm: dropping toward 3,300 m

No precipitation

Wind at higher elevations:
NE → N, light

Lowest temperature in the valley: 6°C—inversion likely near Argentière

TUESDAY, OCTOBER 6, 2026

Fair weather—freezing at dawn—warm in the afternoon

Cloud cover: clear, not counting the fair-weather cumulus clouds forming in the mid-mountain range in the afternoon — sunshine: 85%

No precipitation

Wind at higher elevations:
Very light NNW → light or none, variable

Temperatures in the valley:

low, 4°C

high, 22°C

WEDNESDAY, OCTOBER 7, 2026

Brief morning sunshine — afternoon showers — windy in the mountains

Cloud cover: brief clear spells possible at sunrise—becoming mostly cloudy to overcast—sunshine: 10%

No precipitation

Wind at higher elevations:
WSW, light to moderate → WNW, locally moderate to strong

Temperatures in the valley: marked contrast between a low of around 5°C and a high of around 22°C

FORECAST THROUGH SATURDAY, OCTOBER 10, 2026

THURSDAY: The cold front will finish crossing the Alps and move away toward the southeast—in its wake, frequent and locally heavy showers in the afternoon—the rain-snow line will drop from 2,300 to 2,000 m — A fairly strong, even very strong, northerly wind (Bise) overnight

FRIDAY: The tail end moves away—mid-mountain areas will be snowy as the sun regains dominance—expect 30–40 cm of snow accumulated since the previous day at around 1,800 m—windy at higher elevations, with a prevailing NW wind

SATURDAY: Uncertain — freezing conditions under clear skies at dawn — the Bise wind eases, then the wind shifts back to NW to W — significant warming to ≥ 16°C in the afternoon

The weather forecast applies to all mountain areas in the Mt Blanc valley; Chamonix skiing, Megeve Skiing, and St Gervais Skiing.