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Japan Weekly Snow Roundup #293
Weekly Snow News for Japan, updated 17 December 2025: Siberian cold fuels relentless powder storms, with Hokkaido leading Japan’s mid-winter surge.
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Fortress Mountain at 1800 m altitude
Issued by Snow-Forecast.com at: 10 am (local time) / 17 Dec 2025
Now
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | | | | | |  | | | | | | | | | |
light snow | snow shwrs | some clouds | cloudy | cloudy | light snow | snow shwrs | snow shwrs | light snow | light snow | light snow | light snow | cloudy | light snow | light snow | light snow | light snow | light snow | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
2 | 6 | — | — | — | 2 | — | — | — | — | — | — | — | — | 1 | — | 1 | 3 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -2 | -4 | -14 | -10 | -7 | -5 | -8 | -7 | -15 | -11 | -9 | -15 | -10 | -7 | -13 | -8 | -6 | -11 |
min °C | -3 | -9 | -14 | -16 | -10 | -9 | -14 | -15 | -18 | -17 | -14 | -15 | -15 | -12 | -15 | -15 | -10 | -13 |
-6 | -15 | -20 | -22 | -16 | -14 | -21 | -24 | -27 | -26 | -22 | -23 | -20 | -19 | -21 | -21 | -14 | -20 | |
96 | 78 | 81 | 89 | 88 | 91 | 85 | 77 | 93 | 86 | 92 | 87 | 85 | 88 | 92 | 87 | 93 | 95 | |
1500 | 500 | 0 | 300 | 350 | 500 | 500 | 0 | 0 | 0 | 0 | 0 | 350 | 0 | 0 | 550 | 400 | 200 | |
 | 8:37 | — | — | 8:37 | — | — | 8:38 | — | — | 8:40 | — | — | 8:40 | — | — | 8:41 | — | — |
 | — | 4:35 | — | — | 4:36 | — | — | 4:36 | — | — | 4:36 | — | — | 4:37 | — | — | 4:37 | — |
Next 0-3 days weather summary:
A moderate fall of snow, heaviest on Wed afternoon. Temperatures will be below freezing (max -2°C on Wed morning, min -18°C on Fri night). Winds increasing (light winds from the WNW on Wed morning, strong winds from the W by Thu night).
Next 4-6 days weather summary:
A light covering of new snow, mostly falling on Mon night. Temperatures will be well below freezing (max -6°C on Mon afternoon, min -17°C on Sat morning). Wind will be generally light.
Popular Fortress Mountain Pages
Snow Radar
Latest snow reports near Fortress Mountain:
Fortress Mountain Snow Conditions
| Top snow depth: | 125 cm |
|---|---|
| Bottom snow depth: | 85 cm |
| Fresh snowfall depth: | — |
| Last snowfall: | 16 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in Canada - Alberta are reporting: powder (2) / good piste (2)
Snow History
Week 3 of December has on average:
0.4 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.8 | Powder days Fresh snow, limited sun, any wind. |
2.6 | Bluebird days Average snow, mostly sunny, light wind. |
Fortress Mountain Forecast Snowfall
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Photos of Fortress Mountain
Upload new photo Other resorts in Canada - Alberta are reporting: powder (2) / good piste (2)
The above table gives the weather forecast for Fortress Mountain at the specific elevation of 1800 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Fortress Mountain. 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 Canada.
Click here to read further information on freezing levels and how we forecast our temperatures.
Visitor Reviews of Fortress Mountain
Overall 3.3 Based on 2 votes and 10 reviews
- Snowsure
- Variety of pistes
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- Kathleen from Canada writes:
I remember skiing Fortress back in the late 80's and loved it. Hope it will open again - hope they reopen the old lodge too - was a great place to stay - totally old school skiing and lots of good fun.
Visitor Reviews of Fortress Mountain
Kathleen from Canada writes:
I remember skiing Fortress back in the late 80's and loved it. Hope it will open again - hope they reopen the old lodge too - was a great place to stay - totally old school skiing and lots of good fun.
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