Weather forecast
Morning Update
TODAY'S forecast, Friday 17 July 2026
Today
Passaggi di nubi in un cielo tra il poco nuvoloso ed il molto nuvoloso a tratti, anche per la formazione di addensamenti presso i rilievi nel corso della giornata, con la possibilità di rovesci o temporali di passaggio, più probabili in serata e sui settori NW.
Venti a 3000 m moderati o forti da SW in rotazione da NW la sera; foehn nelle valli NW, brezze pomeridiane anche intense nelle valli SE e centrali.
Le temperature sono in sensibile calo rispetto a ieri, tranne le minime stabili o in lieve rialzo nelle valli.
La quota dello zero termico è già in risalita rispetto alla notte e si attesta a circa 3900 m, in rialzo fino a 4200°C.
Temperature a 1500 m a circa 11°C, in aumento fino a 23°C; a 3000 m temperature dai 6°C gradi attuali fino ad un massimo di 9°C.
Morning Freezing Level: 3900
Afternoon Freezing Level:4200
Forecast issued daily at 7:15 am.
Weather forecast
Issued Thursday 16 July 2026 alle 11:51
Weather forecaster Silvia Monte
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Overall situation
A low-pressure system north of Italy is causing moist southwesterly air to flow into the Aosta Valley, bringing unstable conditions between today and tomorrow, with weather phenomena that may be intense in some areas. Starting Saturday, the upper-level flow will be influenced by a high-pressure system of African origin, bringing a gradual increase in stability and sunny days.
Friday 17 July 2026
Night (from 00 to 06)
Morning (from 06 to 12)
Afternoon (from 12 to 18)
Evening (from 18 to 24)
Forecast
Cloudy or locally very cloudy until mid-morning due to low-to-mid-level clouds. Then, skies will gradually clear starting from the valley floor, with widespread mid-to-high clouds passing through, resulting in skies ranging from partly cloudy to cloudy, and locally very cloudy near the western-southwestern and northern mountain ranges. Partly cloudy in the evening with cloud cover thickening near the borders. Showers and/or thunderstorms are possible everywhere, most likely until early to mid-morning and in the late afternoon and evening, particularly over the northern and west-northwestern mountain ranges.
Temperatures
down significantly.
Winds
3,000 m from the SW, moderate to strong until midday, then partially shifting to the W with local intensification, and from the NW in the evening; in the central-western valleys, light winds from the W-NW in the morning, moderate in the afternoon; in the eastern valleys, light winds from the W-NW, then light winds from the E-SE, moderate in the afternoon.
Reliability
- Freezing level: 3700m / 4000m
- Temp 1500 m: 13°C » 23°C
- Temp 3000 m: 5°C » 9°C
| Temperature | Min | Max |
|---|---|---|
| Mountain | ||
| Valleys |
| Solar ultraviolet radiation * | |
|---|---|
| Mountain | Very high |
| Valleys | High |
| Location | Min | Max |
|---|---|---|
| Aosta | 20 °C | 34 °C |
| Cogne | 14 °C | 23 °C |
| Courmayeur | 16 °C | 25 °C |
| Donnas | 21 °C | 29 °C |
| Gressoney | 15 °C | 24 °C |
| Cervinia | 11 °C | 18 °C |
Warnings
thunderstorms Saturday 18 July 2026
Morning (from 00 to 12)
Afternoon (from 12 to 24)
Forecast
Cloudy or locally very cloudy over the border mountains, especially in the west-southwest and north, throughout the day, with a chance of a few isolated showers in the late afternoon and evening. Elsewhere, partly cloudy in the morning, with cumulus clouds gradually developing from mid-morning onward, leading to partly or patchy cloud cover, especially in the west and near the mountains.
Temperatures
In the mountains, temperatures are falling, with a noticeable drop in the high mountains; in the valleys, lows are steady and highs are falling slightly, except in the eastern sector.
Winds
3,000 m from the northwest, initially moderate to strong, gradually weakening; in the valleys from the west-northwest, light in the morning, moderate or locally strong in the afternoon.
Reliability
- Freezing level: 3500m » 4000m
- Temp 1500 m: 14°C » 21°C
- Temp 3000 m: 3°C » 6°C
| Temperature | Min | Max |
|---|---|---|
| Mountain | ||
| Valleys |
| Solar ultraviolet radiation * | |
|---|---|
| Mountain | Very high |
| Valleys | High |
| Location | Min | Max |
|---|---|---|
| Aosta | 21 °C | 32 °C |
| Cogne | 13 °C | 22 °C |
| Courmayeur | 13 °C | 24 °C |
| Donnas | 23 °C | 32 °C |
| Gressoney | 14 °C | 23 °C |
| Cervinia | 10 °C | 17 °C |
Sunday 19 July 2026
Morning (from 00 to 12)
Afternoon (from 12 to 24)
Reliability
- Freezing level: 3500m » 4000m
| Temperature | Min | Max |
|---|---|---|
| Mountain | ||
| Valleys |
| Solar ultraviolet radiation * | |
|---|---|
| Mountain | High |
| Valleys | High |
Forecast
Mostly clear skies until early morning, with a few clouds over the border mountains. Cloud cover will gradually increase, becoming partly cloudy over the mountains in the early afternoon; skies will be mostly clear or partly cloudy elsewhere. Skies will gradually clear by the end of the day.
Temperatures
Temperatures will remain nearly unchanged in the mountains and will drop slightly in the valleys, especially the lows.
Winds
3,000 m Moderate or locally strong winds from the northwest, shifting locally to the west in the afternoon; in the central-western valleys, weak winds from the west-northwest in the morning and moderate or locally strong in the afternoon; breezes in the eastern valleys, moderate in the afternoon.
Next days
MON 20 JUL 2026
TUE 21 JUL 2026
WED 22 JUL 2026
Reliability
Monday and Tuesday will be partly cloudy and mostly dry. Cloud cover will increase on Wednesday.
* The solar ultraviolet radiation index is elaborated, starting from the weather forecast data, by Arpa Valle d'Aosta - Learn more »