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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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Deer Mountain at 1830 m altitude
Issued by Snow-Forecast.com at: 10 pm (local time) / 17 Dec 2025
Now
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | | |  |  | |  |  | |  | | | | |
light snow | snow shwrs | some clouds | cloudy | some clouds | some clouds | snow shwrs | clear | clear | clear | cloudy | cloudy | some clouds | clear | some clouds | some clouds | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
3 | 2 | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -4 | -8 | -5 | 3 | 6 | 7 | -2 | -5 | -4 | -5 | 3 | 4 | 4 | 7 | 7 | 4 |
min °C | -12 | -12 | -7 | -6 | 5 | 5 | -8 | -7 | -6 | -7 | -4 | 4 | 3 | 4 | 5 | 2 |
-26 | -25 | -14 | -11 | -1 | -1 | -17 | -16 | -14 | -14 | -8 | -1 | -2 | -1 | 1 | -1 | |
89 | 59 | 47 | 55 | 43 | 49 | 60 | 59 | 60 | 39 | 49 | 64 | 59 | 56 | 64 | 66 | |
800 | 600 | 850 | 2500 | 3200 | 2750 | 850 | 1200 | 1000 | 1150 | 2450 | 3050 | 3200 | 3100 | 3150 | 3200 | |
 | — | 7:26 | — | — | 7:26 | — | — | 7:26 | — | — | 7:26 | — | — | 7:28 | — | — |
 | — | — | 4:16 | — | — | 4:17 | — | — | 4:17 | — | — | 4:17 | — | — | 4:19 | — |
Next 0-3 days weather summary:
A light covering of new snow, mostly falling on Thu morning. Freeze-thaw conditions (max 7°C on Fri afternoon, min -12°C on Wed night). Winds decreasing (severe gales from the WNW on Wed night, light winds from the WSW by Thu night).
Next 4-6 days weather summary:
Mostly dry. Freeze-thaw conditions (max 8°C on Tue afternoon, min -7°C on Sat night). Winds increasing (light winds from the WSW on Mon night, fresh winds from the W by Tue morning).
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Snow Radar
Latest snow reports near Deer Mountain:
Deer Mountain Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 13 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in USA - South Dakota are reporting: powder (0) / good piste (0)
Snow History
Week 3 of December has on average:
0.3 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.1 | Powder days Fresh snow, limited sun, any wind. |
1.6 | Bluebird days Average snow, mostly sunny, light wind. |
Deer Mountain Forecast Snowfall
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Other resorts in USA - South Dakota are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Deer Mountain at the specific elevation of 1830 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Deer 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 United States.
Click here to read further information on freezing levels and how we forecast our temperatures.
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