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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 2499 m altitude
Issued by Snow-Forecast.com at: 4 pm (local time) / 17 Dec 2025
Now
Wed 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  |  |  | | | | | | | | | | |
snow shwrs | clear | cloudy | light snow | snow shwrs | some clouds | clear | light snow | light snow | light snow | light snow | cloudy | cloudy | light snow | some clouds | light snow | light snow | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
8 | — | — | — | 4 | — | — | — | — | — | — | — | — | 1 | — | — | 3 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -9 | -13 | -12 | -9 | -10 | -12 | -14 | -15 | -14 | -13 | -12 | -10 | -10 | -11 | -11 | -11 | -10 |
min °C | -11 | -14 | -14 | -10 | -11 | -13 | -15 | -16 | -16 | -14 | -14 | -11 | -11 | -13 | -13 | -12 | -12 |
-23 | -25 | -22 | -18 | -19 | -25 | -27 | -28 | -26 | -26 | -24 | -19 | -18 | -22 | -24 | -22 | -21 | |
59 | 65 | 82 | 80 | 92 | 81 | 77 | 93 | 87 | 89 | 84 | 70 | 77 | 91 | 69 | 90 | 87 | |
600 | 0 | 300 | 400 | 650 | 600 | 0 | 0 | 200 | 0 | 0 | 550 | 0 | 0 | 550 | 300 | 400 | |
 | — | — | 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 well below freezing (max -9°C on Wed afternoon, min -16°C on Fri night). Mainly near gales.
Next 4-6 days weather summary:
A light covering of new snow, mostly falling on Tue morning. Temperatures will be well below freezing (max -10°C on Sun morning, min -14°C on Sat afternoon). Winds decreasing (fresh winds from the WSW on Sat afternoon, light winds from the WSW by Sun morning).
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Snow Radar
Latest snow reports near Fortress Mountain:
Fortress Mountain Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 13 cm |
| 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:
0.8 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.2 | Powder days Fresh snow, limited sun, any wind. |
2.7 | 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 2499 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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- rowan harper from Canada writes:
Fortress Mountain is currently open under the title of K-POW cat skiing. They offer private or walk on experiences. Check out K-POW.CA for more info on this experience.
Visitor Reviews of Fortress Mountain
rowan harper from Canada writes:
Fortress Mountain is currently open under the title of K-POW cat skiing. They offer private or walk on experiences. Check out K-POW.CA for more info on this experience.
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