Weather forecast
Weather forecast
Issued Friday 12 December 2025 alle 10:42
Weather forecaster Igor Torlai
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Overall situation
Pressure measured in Aosta at 7 am: 1028 hPa
Friday 12 December 2025
Morning
Afternoon
Clear sky, or partly cloudy because of high clouds until the middle of the day. Chance of few afternoon clouds in the SE.
Temperatures: falling slightly in the mountains, rising slightly in the valleys.
Pressure: rising slightly.
Winds: 3000 m light westerlies, turning southerlies; breezes in the valleys.
Warnings: no communications.
Reliability
- Freezing level: 2700m » 3000m
- Temp 1500 m: -1°C » 7°C
- Temp 3000 m: -2°C » 0°C
| Temperature | Max |
|---|---|
| Mountain | |
| Valleys |
| Location | Min | Max |
|---|---|---|
| Aosta | 0 °C | 11 °C |
| Cogne | -1 °C | 7 °C |
| Courmayeur | -2 °C | 10 °C |
| Donnas | 3 °C | 8 °C |
| Gressoney-Saint-Jean | -4 °C | 9 °C |
| Breuil-Cervinia | -4 °C | 6 °C |
| Solar ultraviolet radiation * | |
|---|---|
| Mountain | Low |
| Valleys | Low |
Saturday 13 December 2025
Morning
Afternoon
Sunny sky likely.
Temperatures: falling slightly in the mountains.
Pressure: stable.
Winds: 3000 m light westerlies; breezes in the valleys.
Warnings: no communications.
Reliability
- Freezing level: 2700m / 2900m
- Temp 1500 m: -2°C » 8°C
- Temp 3000 m: -3°C / -1°C
| Temperature | Min | Max |
|---|---|---|
| Mountain | ||
| Valleys |
| Location | Min | Max |
|---|---|---|
| Aosta | -1 °C | 11 °C |
| Cogne | -4 °C | 8 °C |
| Courmayeur | -2 °C | 10 °C |
| Donnas | 4 °C | 10 °C |
| Gressoney-Saint-Jean | -5 °C | 10 °C |
| Breuil-Cervinia | -5 °C | 6 °C |
| Solar ultraviolet radiation * | |
|---|---|
| Mountain | Low |
| Valleys | Low |
Sunday 14 December 2025
Morning
Afternoon
Fairly sunny sky with some high cloud transiting. Some afternoon or evening cloud in the SE.
Temperatures: falling slightly, especially in the mountains and from the evening.
Pressure: stable or decreasing slightly.
Winds: 3000 m light westerlies, turning from S and strengthening in the evening; breezes in the valleys.
Reliability
- Freezing level: 2500m / 2800m
| Temperature | Min | Max |
|---|---|---|
| Mountain | ||
| Valleys |
| Location | Min | Max |
|---|---|---|
| Aosta | -1 °C | 9 °C |
| Cogne | -4 °C | 7 °C |
| Courmayeur | -3 °C | 9 °C |
| Donnas | 3 °C | 9 °C |
| Gressoney-Saint-Jean | -5 °C | 7 °C |
| Breuil-Cervinia | -6 °C | 5 °C |
| Solar ultraviolet radiation * | |
|---|---|
| Mountain | Low |
| Valleys | Low |
Next days
Mon 15 Dec 2025
Tue 16 Dec 2025
Wed 17 Dec 2025
Thu 18 Dec 2025
Reliability
High clouds on Monday, then getting thicker. Likely precipitation on Tuesday, of heavier intensity in the SE areas, snowy above 1000-1300 m. And then sunnier again.
* The solar ultraviolet radiation index is elaborated, starting from the weather forecast data, by Arpa Valle d'Aosta - Learn more »