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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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Keystone at 3717 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 | light snow | some clouds | clear | snow shwrs | clear | clear | snow shwrs | snow shwrs | snow shwrs | some clouds | clear | some clouds | clear | clear | clear | clear | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
— | 2 | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -2 | -7 | -9 | -7 | -5 | 0 | 0 | -2 | -4 | -4 | -8 | -1 | -1 | -5 | -1 | -1 | -5 |
min °C | -5 | -13 | -12 | -10 | -10 | -3 | -1 | -5 | -5 | -6 | -9 | -7 | -5 | -7 | -7 | -5 | -7 |
-15 | -26 | -23 | -19 | -18 | -11 | -9 | -15 | -15 | -15 | -16 | -14 | -11 | -14 | -14 | -11 | -14 | |
74 | 71 | 42 | 64 | 83 | 38 | 37 | 73 | 70 | 67 | 69 | 60 | 82 | 83 | 67 | 85 | 61 | |
3050 | 1650 | 2150 | 2000 | 2150 | 3700 | 3500 | 3000 | 3050 | 2700 | 2200 | 3600 | 2900 | 2550 | 3500 | 2950 | 2600 | |
 | — | — | 7:18 | — | — | 7:18 | — | — | 7:20 | — | — | 7:20 | — | — | 7:20 | — | — |
 | 4:40 | — | — | 4:40 | — | — | 4:42 | — | — | 4:42 | — | — | 4:43 | — | — | 4:43 | — |
Next 0-3 days weather summary:
A dusting of new snow. Temperatures will be below freezing (max 0°C on Fri morning, min -13°C on Wed night). Winds decreasing (gales from the WNW on Wed night, moderate winds from the WNW by Thu night).
Next 4-6 days weather summary:
Mostly dry. Temperatures will be below freezing (max -1°C on Sun morning, min -9°C on Sat night). Winds decreasing (strong winds from the W on Sat afternoon, light winds from the WSW by Mon night).
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Snow Radar
Latest snow reports near Keystone:
Keystone Snow Conditions
| Top snow depth: | 45 cm |
|---|---|
| Bottom snow depth: | 15 cm |
| Fresh snowfall depth: | — |
| Last snowfall: | 6 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in USA - Colorado are reporting: powder (0) / good piste (2)
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Snow History
Week 3 of December has on average:
0.7 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.3 | Powder days Fresh snow, limited sun, any wind. |
3.9 | Bluebird days Average snow, mostly sunny, light wind. |
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Keystone Forecast Snowfall
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Photos of Keystone
Keystone by Tom
Backside of Keystone by Brian
Keystone by Tom
Upload new photo Other resorts in USA - Colorado are reporting: powder (0) / good piste (2)
The above table gives the weather forecast for Keystone at the specific elevation of 3717 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Keystone. 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 Keystone
Overall 3.9 Based on 6 votes and 5 reviews
- Snowsure
- Variety of pistes
- Vote
- Barry Peters from United Kingdom writes:
Summary: Keystone is a very well run friendly ski area. I am a fairly advanced skier who wanted to get better at bumps (moguls). Also good for beginners and good night skiing and fun-park. Pluses at Keystone: Helpful, well organised (this is N America, not Italy after all). Because of the recession and the time of year I went (late March), it was fairly quiet and no/tiny lift queues. Enough skiing unless you are really hard core. You can always go the the nearby resorts of Vail, Beaver Creek, Breckenbridge if you want (same lift pass but need to take bus or go by car). Lots of accommodation nearby - little that is ski-in, ski-out, but little problem unless you are lazy or can't walk & hold skis at the same time. Superb free bus chuttles that take you all around Keystone. Well-organised night skiing. Fantastic ski school (I used Mountain Lodge and they were the best I have used - good for all levels) Minuses at Keystone: The elevation can take getting used to for some. The cost of the lift pass - ouch. Made worse for us Europeans by the terrible exchange rate. However, a season pass for all the local resorts costs roughly the same as a week pass so actually it is cheap if you go for a few weeks. Barry Peters
Visitor Reviews of Keystone
Barry Peters from United Kingdom writes:
Summary:
Keystone is a very well run friendly ski area.
I am a fairly advanced skier who wanted to get better at bumps (moguls). Also good for beginners and good night skiing and fun-park.
Pluses at Keystone:
Helpful, well organised (this is N America, not Italy after all).
Because of the recession and the time of year I went (late March), it was fairly quiet and no/tiny lift queues.
Enough skiing unless you are really hard core. You can always go the the nearby resorts of Vail, Beaver Creek, Breckenbridge if you want (same lift pass but need to take bus or go by car).
Lots of accommodation nearby - little that is ski-in, ski-out, but little problem unless you are lazy or can't walk & hold skis at the same time. Superb free bus chuttles that take you all around Keystone.
Well-organised night skiing.
Fantastic ski school (I used Mountain Lodge and they were the best I have used - good for all levels)
Minuses at Keystone:
The elevation can take getting used to for some.
The cost of the lift pass - ouch. Made worse for us Europeans by the terrible exchange rate. However, a season pass for all the local resorts costs roughly the same as a week pass so actually it is cheap if you go for a few weeks.
Barry Peters
Nearest