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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 高度
Snow-Forecast.comによる発表： 10 pm (現地時間) / 17 Dec 2025
Now
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | ||||||||||||
night | morn- ing | after- noon | night | morn- ing | after- noon | night | morn- ing | after- noon | night | morn- ing | after- noon | night | morn- ing | after- noon | night | |
 |  | | | | |  |  | | | |  |  | | | | |
にわか雪 | 晴れる | 晴れる | にわか雪 | 晴れる | 晴れる | 小雪 | にわか雪 | にわか雪 | にわか雪 | 晴れる | 一部曇り | 晴れる | 晴れる | 晴れる | 晴れる | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
3 | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -7 | -10 | -7 | -7 | 0 | 0 | -2 | -5 | -5 | -8 | -1 | -1 | -6 | 1 | 1 | -5 |
min °C | -14 | -15 | -10 | -10 | -3 | -2 | -6 | -6 | -7 | -10 | -8 | -5 | -6 | -6 | -4 | -7 |
-28 | -27 | -19 | -18 | -11 | -10 | -17 | -16 | -16 | -18 | -14 | -11 | -12 | -12 | -10 | -13 | |
66 | 40 | 69 | 81 | 38 | 46 | 67 | 76 | 88 | 71 | 59 | 84 | 80 | 48 | 57 | 47 | |
1350 | 2000 | 1850 | 2050 | 3700 | 3400 | 3100 | 2950 | 2550 | 2000 | 3600 | 2800 | 2600 | 3850 | 2950 | 2550 | |
— | 7:18 | — | — | 7:18 | — | — | 7:20 | — | — | 7:20 | — | — | 7:20 | — | — | |
— | — | 4:40 | — | — | 4:42 | — | — | 4:42 | — | — | 4:43 | — | — | 4:43 | — | |
翌 0-3 日の天気概要：
おもに降雪による新雪の少量の積雪 水曜日の夜に. 気温が氷点下になるでしょう (最大 0°C 金曜日の朝に, 最小 -15°C 木曜日の朝に). 風が弱くなる (強風 西北西から 水曜日の夜に, 弱風 西北西から 木曜日の夜までに).
翌 4-6 日の天気概要：
大部分は乾燥. 凍結融解の条件 (最大 1°C 月曜日の朝に, 最小 -10°C 土曜日の夜に). 風は通常微風.
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Keystone の雪の状態
| 雪上部の深さ | 45 cm |
|---|---|
| 雪下部の深さ | 15 cm |
| 新雪の深さ | — |
| 最後の降雪 | 6 Dec 2025 |
USA - Coloradoの他のリゾートの報告: 粉雪 (1) / 状態のよいゲレンデ (4)
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雪の履歴
December月3 週の平均：
0.7 | ブルバードパウダーの日 新雪、おおむね晴れ、微風 |
|---|---|
1.3 | パウダーの日 新雪、時々晴れ、風あり |
3.9 | ブルーバードの日 平均的な雪、おおむね晴れ、微風 |
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新しい写真をアップロード USA - Coloradoの他のリゾートの報告: 粉雪 (1) / 状態のよいゲレンデ (4)
上記の表には Keystone の3717 m の特定高度における天気予報が表示されています。高度な気候モデルによって、 Keystone の山頂、中腹、麓にあるスキーステーションの雪予報を提供することができます。その他の高度の天気予報にアクセスするには、テーブルの上のタブナビゲーションをお使いください。より広範囲の天気予報には、 United States の天気図をご覧ください。
ここをクリックし凍結高度や我々の気温の予測の仕方についてさらにご覧ください。
Keystoneのビジターによるレビュー
全体 3.9 基づいた 6 投票 および 5 レビュー
- スノーシュア
- 様々なゲレンデ
- 投票
- United KingdomのBarry Petersが記述:
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
Keystoneのビジターによるレビュー
United KingdomのBarry Petersが記述:
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
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