New €155m Les Grands Montets Lift Begins Opening This Winter
Closed since the devastating 2018 fire, the first part of the flagship new Grands Montets lift above Argentière in the Chamonix Valley is set to open this December.
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Trillevalen at 1359 m altitude
Issued by Snow-Forecast.com at: 1 am (local time) / 20 Sep 2026
Next 3 days weather summary:A dusting of snow turning to light rain (total 7.0mm) on Sun night. Freeze-thaw conditions (max 5°C on Tue night, min -1°C on Mon night). Winds decreasing (near gales from the NNW on Mon morning, light winds from the W by Tue morning). | Days 4-6 weather summary:Moderate rain (total 11.0mm), heaviest on Wed night. Freeze-thaw conditions (max 7°C on Fri afternoon, min 0°C on Thu morning). Winds increasing (calm on Wed night, fresh winds from the S by Fri night). | |||||||||||||||||
Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | |  | |  |  | | | | |  | | | |  | |
cloudy | light snow | light snow | snow shwrs | snow shwrs | some clouds | cloudy | light rain | rain shwrs | light rain | light rain | light snow | light snow | some clouds | some clouds | some clouds | some clouds | clear | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
 cm | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | 3 | 1 | — | — | — | 2 | 1 | 1 | 1 | 9 | — | — | — | — | — | — |
max °C | 3 | 3 | 2 | 2 | 1 | 0 | 3 | 4 | 5 | 5 | 4 | 3 | 0 | 3 | 4 | 6 | 7 | 4 |
min °C | 2 | 2 | 1 | 2 | 1 | -1 | 1 | 3 | 4 | 5 | 4 | 1 | 0 | 0 | 2 | 4 | 6 | 4 |
chill °C | -4 | -4 | -6 | -6 | -7 | -8 | -2 | 0 | -1 | 2 | 2 | -4 | -6 | -4 | -1 | -1 | 2 | -1 |
Humid % | 69 | 97 | 99 | 94 | 97 | 84 | 60 | 92 | 97 | 91 | 98 | 100 | 97 | 48 | 33 | 55 | 58 | 56 |
Freeze m | 1850 | 1600 | 1750 | 1650 | 1450 | 1300 | 2250 | 2800 | 2550 | 2450 | 2300 | 2000 | 1300 | 2250 | 3300 | 3700 | 3750 | 3600 |
 | 6:43 | — | — | 6:45 | — | — | 6:48 | — | — | 6:50 | — | — | 6:54 | — | — | 6:56 | — | — |
 | — | 7:15 | — | — | 7:13 | — | — | 7:09 | — | — | 7:06 | — | — | 7:02 | — | — | 6:59 | — |
Days 7-16 weather summary:
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Avalanche information: European Avalanche Warning Services (EAWS)
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Latest snow reports near Trillevalen:
Trillevalen Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 2 cm |
| Last snowfall: | 19 Sep 2026 |
| Snow Alerts | Create Alert |
Other resorts in Sweden are reporting: powder (0) / good piste (0)
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Snow History
Week 3 of September has on average:
0.2 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.3 | Powder days Fresh snow, limited sun, any wind. |
0.1 | Bluebird days Average snow, mostly sunny, light wind. |
Trillevalen Forecast Snowfall
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Other resorts in Sweden are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Trillevalen at the specific elevation of 1359 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Trillevalen. To access the weather forecasts for the other elevations, use the tab navigation above the table. For a wider view of the weather, check out the Weather Map of Sweden.
Click here to read further information on freezing levels and how we forecast our temperatures.
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