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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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Big Boulder at 663 m altitude
Issued by Snow-Forecast.com at: 6 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 | |
 |  |  |  |  |  | |  | | | | |  |  | | |  | |
some clouds | some clouds | clear | cloudy | heavy rain | light snow | light snow | snow shwrs | cloudy | cloudy | some clouds | clear | snow shwrs | clear | clear | some clouds | light snow | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
— | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | 29 | 7 | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 4 | 3 | 4 | 6 | 10 | 3 | -6 | -5 | 0 | 1 | 2 | 1 | -4 | -7 | -4 | -4 | -3 |
min °C | 3 | -1 | 3 | 4 | 6 | 2 | -8 | -8 | -3 | 0 | 0 | -1 | -7 | -8 | -5 | -4 | -4 |
-4 | -4 | -2 | -2 | 0 | -5 | -19 | -19 | -8 | -6 | -7 | -9 | -17 | -18 | -14 | -12 | -8 | |
70 | 63 | 52 | 73 | 98 | 72 | 87 | 76 | 46 | 48 | 59 | 46 | 83 | 73 | 56 | 57 | 57 | |
1750 | 0 | 2600 | 2800 | 2550 | 1350 | 0 | 0 | 0 | 1600 | 2100 | 800 | 200 | 0 | 0 | 0 | 0 | |
 | — | — | 7:22 | — | — | 7:22 | — | — | 7:22 | — | — | 7:22 | — | — | 7:24 | — | — |
 | 4:35 | — | — | 4:35 | — | — | 4:35 | — | — | 4:36 | — | — | 4:36 | — | — | 4:37 | — |
Next 0-3 days weather summary:
Heavy rain (total 36.0mm), heaviest during Thu night. Freeze-thaw conditions (max 10°C on Thu night, min -8°C on Fri afternoon). Winds increasing (calm on Wed night, near gales from the S by Thu night).
Next 4-6 days weather summary:
A dusting of new snow. Freeze-thaw conditions (max 2°C on Sat night, min -8°C on Sun night). Winds decreasing (strong winds from the NW on Sun night, light winds from the WSW by Mon night).
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Snow Radar
Latest snow reports near Big Boulder:
Big Boulder Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 13 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in USA - Pennsylvania are reporting: powder (0) / good piste (1)
Snow History
Week 3 of December has on average:
0.3 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.3 | Powder days Fresh snow, limited sun, any wind. |
1.4 | Bluebird days Average snow, mostly sunny, light wind. |
Big Boulder Forecast Snowfall
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Other resorts in USA - Pennsylvania are reporting: powder (0) / good piste (1)
The above table gives the weather forecast for Big Boulder at the specific elevation of 663 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Big Boulder. 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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