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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 2764 m altitude
Issued by Snow-Forecast.com at: 10 am (local time) / 17 Dec 2025
Now
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | |  | | | | |  |  | | | | | | | |
clear | snow shwrs | light snow | clear | clear | snow shwrs | clear | clear | snow shwrs | clear | some clouds | some clouds | clear | snow shwrs | snow shwrs | clear | clear | some clouds | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 5 | 4 | -1 | -4 | -2 | -3 | 5 | 5 | 3 | 2 | 2 | -3 | 5 | 5 | -1 | 5 | 5 | -2 |
min °C | -3 | 1 | -9 | -8 | -6 | -6 | 0 | 3 | 0 | 0 | 0 | -4 | -2 | 0 | -3 | -3 | -1 | -3 |
-5 | -5 | -17 | -14 | -8 | -9 | -5 | -2 | -6 | -6 | -4 | -4 | -2 | -2 | -3 | -3 | -3 | -3 | |
43 | 78 | 62 | 38 | 71 | 87 | 36 | 36 | 67 | 66 | 69 | 73 | 59 | 93 | 95 | 55 | 82 | 90 | |
3600 | 3000 | 1550 | 2100 | 1950 | 2200 | 3700 | 3500 | 3000 | 3100 | 2850 | 2450 | 3600 | 2950 | 2500 | 3500 | 2850 | 2500 | |
 | 7:18 | — | — | 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. Freeze-thaw conditions (max 5°C on Wed morning, min -9°C on Wed night). Mainly strong winds.
Next 4-6 days weather summary:
Mostly dry. Freeze-thaw conditions (max 5°C on Sun morning, min -4°C on Sat night). Mainly fresh winds.
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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:
0.2 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.5 | Powder days Fresh snow, limited sun, any wind. |
1.8 | 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 2764 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
- Lee Wilson (970)368-0165 from New Zealand writes:
I'm here at Keystone this season and in response to below they now have a $30M upgrade into a new gondola that fits 8 people and gets to the summit in less than 12minutes (fast as) also has a mid station you can down load before the last hard pack snow (bottom of river run) that often gets stripped from beginner snowboarders sliding down it so that has been fixed now. They also have free bus services. As for being bitterly cold, of course this is the rocky mountains, that's why we are here. Enjoy, Lee - Snowboard Instructor (Keystone,co and Mt Hutt, NZ) Email - fibremotive@hotmail.com
Visitor Reviews of Keystone
Lee Wilson (970)368-0165 from New Zealand writes:
I'm here at Keystone this season and in response to below they now have a $30M upgrade into a new gondola that fits 8 people and gets to the summit in less than 12minutes (fast as) also has a mid station you can down load before the last hard pack snow (bottom of river run) that often gets stripped from beginner snowboarders sliding down it so that has been fixed now. They also have free bus services. As for being bitterly cold, of course this is the rocky mountains, that's why we are here.
Enjoy,
Lee - Snowboard Instructor (Keystone,co and Mt Hutt, NZ)
Email - fibremotive@hotmail.com
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