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Weather forecast

Weather forecast

Issued Friday 09 October 2026 alle 12:11
Weather forecaster Igor Torlai
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Overall situation

A high-pressure system over the Atlantic is extending as far as the Alps. These days, its expansion has been slowed down by the temporary deepening of a trough located over northern Europe, bringing cooler air, moderate to high cloud cover, and modest precipitation over the Aosta Valley mountains, along the eastern border. However, starting Monday, milder and drier air flows will bring stable, fair weather at least through the middle of the week.

Friday 09 October 2026

Morning (from 06 to 12)
partly/irregularly cloudy partly/irregularly cloudy partly/irregularly cloudy partly/irregularly cloudy partly/irregularly cloudy partly/irregularly cloudy Aosta Valley map
Afternoon (from 12 to 18)
a few cloudy a few cloudy a few cloudy a few cloudy a few cloudy a few cloudy Aosta Valley map
Evening (from 18 to 24)
cloudy very cloudy/overcast very cloudy/overcast very cloudy/overcast very cloudy/overcast very cloudy/overcast Aosta Valley map

Forecast
Mostly clear skies during the day due to mid-to-high-level clouds and to development of clouds over the mountains. Very cloudy overnight.

Temperatures
Increasing slightly in the mountains.

Winds
3,000 m light easterlies, turning to the north in the afternoon; breezes in the valleys.

Reliability
  • Freezing level: 2700m » 3200m
  • Temp 1500 m: 5°C » 12°C
  • Temp 3000 m: -1°C » 2°C
Termometro
Temperature Max
Mountain
Valleys
Indice UV a cura di ARPA VDA
Solar ultraviolet radiation *
Mountain Moderate
Valleys Moderate
Location Min ** Max
Aosta 9 °C 20 °C
Cogne 4 °C 13 °C
Courmayeur 5 °C 15 °C
Donnas 14 °C 19 °C
Gressoney 7 °C 13 °C
Cervinia 1 °C 10 °C

** Temperature minime osservate alle ore 8:00 dalle stazioni periferiche.

Saturday 10 October 2026

Night (from 00 to 06)
cloudy cloudy cloudy very cloudy with light rain very cloudy with light rain cloudy Aosta Valley map
Morning (from 06 to 12)
partly/irregularly cloudy partly/irregularly cloudy cloudy with light rain very cloudy with light rain very cloudy with light rain partly/irregularly cloudy Aosta Valley map
Afternoon (from 12 to 18)
a few cloudy a few cloudy partly/irregularly cloudy cloudy a few cloudy a few cloudy Aosta Valley map
Evening (from 18 to 24)
a few cloudy clear a few cloudy a few cloudy a few cloudy clear Aosta Valley map

Forecast
Very cloudy or overcast sky in the morning, with light precipitation along the borders with neighbouring countries. Sunny spells will become more widespread in the afternoon, beginning from the southeastern regions.

Temperatures
Lows will drop slightly in the valleys; highs will drop at higher elevations and rise in the valleys.

Winds
3,000 m moderate or locally strong winds from the northwest; foehn winds developing in the valleys, breezes in the SE.

Reliability
  • Freezing level: 2700m » 2900m
  • Temp 1500 m: 4°C » 14°C
  • Temp 3000 m: -2°C » 0°C
Termometro
Temperature Min Max
Mountain
Valleys
Indice UV a cura di ARPA VDA
Solar ultraviolet radiation *
Mountain Moderate
Valleys Moderate
Location Min Max
Aosta 12 °C 21 °C
Cogne 6 °C 13 °C
Courmayeur 8 °C 14 °C
Donnas 14 °C 20 °C
Gressoney 7 °C 14 °C
Cervinia 5 °C 9 °C

Sunday 11 October 2026

Morning (from 00 to 12)
high clouds high clouds high clouds high clouds high clouds high clouds Aosta Valley map
Afternoon (from 12 to 24)
cloudy cloudy cloudy cloudy cloudy cloudy Aosta Valley map

Forecast
Clear or partly cloudy sky in the morning due to passing high clouds, which will become thicker in the afternoon. Clear skies at night.

Temperatures
Slightly rising at higher elevations, slightly lowering in the valleys.

Winds
3,000 m moderate to light westerly winds; breezes in the valleys.

Reliability
  • Freezing level: 2800m » 3100m
  • Temp 1500 m: 1°C » 12°C
  • Temp 3000 m: -1°C » 1°C
Termometro
Temperature Min Max
Mountain
Valleys
Indice UV a cura di ARPA VDA
Solar ultraviolet radiation *
Mountain Moderate
Valleys Moderate
Location Min Max
Aosta 9 °C 20 °C
Cogne 4 °C 13 °C
Courmayeur 4 °C 15 °C
Donnas 12 °C 19 °C
Gressoney 4 °C 13 °C
Cervinia 2 °C 9 °C

Monday 12 October 2026

Morning (from 00 to 12)
clear clear clear clear clear clear Aosta Valley map
Afternoon (from 12 to 24)
clear a few cloudy a few cloudy clear clear clear Aosta Valley map
Reliability
  • Freezing level: 2900m » 3600m
Termometro
Temperature Min Max
Mountain
Valleys
Indice UV a cura di ARPA VDA
Solar ultraviolet radiation *
Mountain Moderate
Valleys Moderate

Forecast
Clear or partly cloudy sky, with a chance of some cloud cover in the afternoon and evening in the southeastern areas.

Temperatures
Rising, especially in the highs.

Winds
3,000 m light or locally moderate from the N/NW; breezes in the valleys.

Next days

TUE 13 OCT 2026
a few cloudy a few cloudy Aosta Valley map
WED 14 OCT 2026
partly/irregularly cloudy partly/irregularly cloudy Aosta Valley map
THU 15 OCT 2026
a few cloudy a few cloudy Aosta Valley map
Reliability

Temperatures will rise noticeably; skies will be clear or partly cloudy likely, with a few more clouds on Wednesday.

Indice UV a cura di ARPA VDA * The solar ultraviolet radiation index is elaborated, starting from the weather forecast data, by Arpa Valle d'Aosta - Learn more »