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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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Royal Mountain at 401 m altitude
Issued by Snow-Forecast.com at: 6 pm (local time) / 18 Dec 2025
Now
Thu 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  |  |  | | | | | |  | | | | |
some clouds | light rain | mod. rain | light snow | snow shwrs | clear | cloudy | light snow | light snow | light snow | snow shwrs | clear | clear | some clouds | light snow | light snow | light snow | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
— | — | — | 2 | — | — | — | — | — | — | — | — | — | — | 1 | — | — | |
— | 3 | 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 3 | 9 | 11 | 1 | -5 | -2 | -1 | 1 | -1 | -5 | -6 | -6 | -5 | -5 | -3 | -3 | -2 |
min °C | 1 | 1 | 3 | -3 | -7 | -4 | -1 | -2 | -2 | -5 | -9 | -8 | -6 | -6 | -3 | -4 | -4 |
-4 | -4 | -3 | -11 | -16 | -9 | -4 | -8 | -9 | -13 | -18 | -17 | -12 | -11 | -8 | -4 | -7 | |
67 | 97 | 82 | 84 | 79 | 44 | 48 | 53 | 56 | 69 | 61 | 53 | 50 | 67 | 89 | 91 | 98 | |
2600 | 2550 | 2900 | 550 | 0 | 0 | 0 | 900 | 250 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
 | — | — | 7:20 | — | — | 7:20 | — | — | 7:22 | — | — | 7:22 | — | — | 7:22 | — | — |
 | 4:20 | — | — | 4:20 | — | — | 4:21 | — | — | 4:21 | — | — | 4:22 | — | — | 4:22 | — |
Next 0-3 days weather summary:
Moderate rain (total 10.0mm) heaviest on Fri morning, then becoming colder with a dusting of snow on Fri afternoon. Freeze-thaw conditions (max 11°C on Fri morning, min -7°C on Fri night). Winds decreasing (near gales from the S on Fri morning, light winds from the SSW by Sat afternoon).
Next 4-6 days weather summary:
A dusting of new snow. Freeze-thaw conditions (max 1°C on Wed morning, min -9°C on Sun night). Winds decreasing (fresh winds from the NW on Sun night, calm by Tue afternoon).
Popular Royal Mountain Pages
Snow Radar
Latest snow reports near Royal Mountain:
Royal Mountain Snow Conditions
| Top snow depth: | 25 cm |
|---|---|
| Bottom snow depth: | 18 cm |
| Fresh snowfall depth: | — |
| Last snowfall: | 14 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in USA - New York are reporting: powder (0) / good piste (3)
Snow History
Week 3 of December has on average:
0.3 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.6 | Powder days Fresh snow, limited sun, any wind. |
1.5 | Bluebird days Average snow, mostly sunny, light wind. |
Royal Mountain Forecast Snowfall
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Other resorts in USA - New York are reporting: powder (0) / good piste (3)
The above table gives the weather forecast for Royal Mountain at the specific elevation of 401 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Royal 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.
Visitor Reviews of Royal Mountain
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