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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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Lost Valley at 36 m altitude
Issued by Snow-Forecast.com at: 6 am (local time) / 18 Dec 2025
Now
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | |  |  |  |  | | |  | | | |  | | | |
some clouds | some clouds | light rain | mod. rain | mod. rain | some clouds | clear | cloudy | snow shwrs | clear | some clouds | clear | clear | clear | snow shwrs | light snow | light snow | some clouds | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | |
— | — | 1 | 10 | 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 3 | 2 | 9 | 13 | 11 | 1 | 0 | -1 | 2 | 4 | 0 | -3 | -6 | -6 | -6 | -2 | -1 | -1 |
min °C | -1 | 2 | 2 | 11 | 4 | -4 | -3 | -2 | 0 | 3 | -2 | -7 | -7 | -7 | -7 | -4 | -3 | -3 |
-4 | -2 | -1 | 8 | 0 | -9 | -8 | -4 | -3 | -1 | -7 | -15 | -15 | -11 | -12 | -8 | -3 | -5 | |
86 | 92 | 100 | 95 | 86 | 65 | 50 | 60 | 61 | 65 | 51 | 55 | 53 | 47 | 53 | 69 | 91 | 72 | |
0 | 2300 | 2700 | 2450 | 2400 | 0 | 0 | 0 | 650 | 500 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
 | 7:11 | — | — | 7:11 | — | — | 7:11 | — | — | 7:11 | — | — | 7:13 | — | — | 7:13 | — | — |
 | — | 4:04 | — | — | 4:04 | — | — | 4:04 | — | — | 4:05 | — | — | 4:05 | — | — | 4:06 | — |
Next 0-3 days weather summary:
Moderate rain (total 18.0mm), heaviest on Fri morning. Freeze-thaw conditions (max 13°C on Fri morning, min -4°C on Fri night). Winds decreasing (strong winds from the S on Fri morning, calm by Sat afternoon).
Next 4-6 days weather summary:
A dusting of new snow. Freeze-thaw conditions (max 4°C on Sun morning, min -7°C on Sun night). Wind will be generally light.
Popular Lost Valley Pages
Snow Radar
Latest snow reports near Lost Valley:
Lost Valley Snow Conditions
| Top snow depth: | 25 cm |
|---|---|
| Bottom snow depth: | 25 cm |
| Fresh snowfall depth: | — |
| Last snowfall: | 14 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in USA - Maine are reporting: powder (0) / good piste (1)
Snow History
Week 3 of December has on average:
0.1 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.6 | Powder days Fresh snow, limited sun, any wind. |
1.8 | Bluebird days Average snow, mostly sunny, light wind. |
Lost Valley Forecast Snowfall
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Other resorts in USA - Maine are reporting: powder (0) / good piste (1)
The above table gives the weather forecast for Lost Valley at the specific elevation of 36 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Lost Valley. 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 Lost Valley
Overall 4.8 Based on 1 vote and 1 review
- Snowsure
- Variety of pistes
- Vote
- Melinda Chadbourne from United States writes:
Lost Valley is a great place to spend the day with your family. They have an excellent ski school and the mountain is just the right size for learning and intermediate skiing families.
Visitor Reviews of Lost Valley
Melinda Chadbourne from United States writes:
Lost Valley is a great place to spend the day with your family. They have an excellent ski school and the mountain is just the right size for learning and intermediate skiing families.
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