Weather forecast

Weather forecast

Issued Friday 29 August 2025 alle 01:24
Weather forecaster Igor Torlai
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Friday 29 August 2025

Morning
Poco nuvoloso Poco nuvoloso Poco nuvoloso Poco nuvoloso Poco nuvoloso Poco nuvoloso Aosta Valley map
Afternoon
Poco nuvoloso, pioggia debole Nuvoloso, pioggia debole Poco nuvoloso, pioggia debole Coperto, pioggia debole Coperto, pioggia debole Coperto, pioggia debole Aosta Valley map

Cloud will develop again up to cloudy or very cloudy sky. Scattered showers during the afternoon, locally thundery and moderate in the SE during the early afternoon, and locally intense showers in the NW in the evening.

Temperatures: falling, especially in the mountains.

Pressure: falling.

Winds: 3000 m moderate becoming strong from SW, turning from NW from the evening onwards; westerlies in the western valleys, breezes locally intense elsewhere.

Warnings: showers or thunderstorms, breezes even intense in the valleys.

Reliability
  • Freezing level: 3000m » 3600m
  • Temp 1500 m: 8°C » 16°C
  • Temp 3000 m: 0°C » 3°C
Temperature Max
Mountain
Valleys
Location Min Max
Aosta 12 °C 23 °C
Cogne 6 °C 16 °C
Courmayeur 9 °C 19 °C
Donnas 16 °C 22 °C
Gressoney-Saint-Jean 8 °C 16 °C
Breuil-Cervinia 5 °C 12 °C
Indice UV a cura di ARPA VDA
Solar ultraviolet radiation *
Mountain High
Valleys Moderate

Saturday 30 August 2025

Morning
Sereno Sereno Sereno Coperto Nuvoloso Sereno Aosta Valley map
Afternoon
Sereno Sereno Sereno Poco nuvoloso Sereno Sereno Aosta Valley map

Thick cloud and chance of residual showers close to the foreign border crests, ceasing by the middle of the day, and then clearing up more and more. Mainly clear sky elsewhere.

Temperatures: falling in the minimum values, rising in the maximum in the mountains, in particular overnight and at very high altitude.

Pressure: falling.

Winds: 3000 m moderate getting light from NW; foehn winds developing in the valleys, breezes in the SE valleys.

Warnings: no communications.

Reliability
  • Freezing level: 2700m » 4000m
  • Temp 1500 m: 6°C » 17°C
  • Temp 3000 m: -2°C » 2°C
Temperature Min Max
Mountain
Valleys
Location Min Max
Aosta 10 °C 25 °C
Cogne 5 °C 17 °C
Courmayeur 10 °C 17 °C
Donnas 16 °C 24 °C
Gressoney-Saint-Jean 6 °C 18 °C
Breuil-Cervinia 4 °C 10 °C
Indice UV a cura di ARPA VDA
Solar ultraviolet radiation *
Mountain High
Valleys High

Sunday 31 August 2025

Morning
Sereno Poco nuvoloso Sereno Velato Sereno Sereno Aosta Valley map
Afternoon
Sereno Poco nuvoloso Nuvoloso Poco nuvoloso Poco nuvoloso Nuvoloso Aosta Valley map

At first clear sky in the morning, and then a few medium-high clouds transiting and medium-low clouds growing up from the Piedmont border areas, up to cloudy sky. Some afternoon precipitation, light and scattered. From the evening very cloudy to overcast sky, and spreading showers through overnight.

Temperatures: rising, especially in the mountains.

Pressure: further falling slightly.

Winds: 3000 m light from W turning gradually from S in the evening, strengthening up up to strong overnight; calm or very light winds in the morning in the valleys, and then breezes locally intense.

Reliability
  • Freezing level: 3500m » 4100m
Temperature Min Max
Mountain
Valleys
Location Min Max
Aosta 11 °C 26 °C
Cogne 6 °C 19 °C
Courmayeur 11 °C 23 °C
Donnas 16 °C 24 °C
Gressoney-Saint-Jean 7 °C 20 °C
Breuil-Cervinia 9 °C 16 °C
Indice UV a cura di ARPA VDA
Solar ultraviolet radiation *
Mountain High
Valleys High

Next days

Mon 01 Sep 2025
925 925 Aosta Valley map
Tue 02 Sep 2025
815 815 Aosta Valley map
Wed 03 Sep 2025
810 810 Aosta Valley map
Thu 04 Sep 2025
810 810 Aosta Valley map
Reliability

Spread showers on Monday, potentially thundery and heavy; last precipitation on Tuesday, then getting better; on Wednesday and Thursday milder and more settled weather likely, sunny sky.

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 »