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North America Weekly Snow Roundup #291
Weekly Snow News for North America, updated December 3, 2025: Season start remains challenging with light snowfall across the west; East Coast leads with deeper bases.
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Sun Valley (Nagano) at 1510 m altitude
Issued by Snow-Forecast.com at: 2 am (local time) / 04 Dec 2025
Now
Thursday 4 | Friday 5 | Saturday 6 | Sunday 7 | Monday 8 | Tuesday 9 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  | |  | |  | | | |  | |  | | | | |
light snow | snow shwrs | snow shwrs | light snow | mod. snow | snow shwrs | clear | clear | clear | clear | clear | clear | cloudy | light snow | mod. snow | light snow | light snow | snow shwrs | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
3 | — | 2 | 2 | 8 | 1 | — | — | — | — | — | — | — | — | 6 | 2 | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -9 | -8 | -7 | -5 | -5 | -5 | 0 | 0 | 0 | 1 | 2 | 1 | 2 | 1 | -3 | -5 | -5 | -6 |
min °C | -10 | -10 | -9 | -5 | -6 | -8 | -2 | -1 | -2 | 0 | 1 | 0 | 2 | -1 | -5 | -5 | -7 | -7 |
-19 | -10 | -14 | -9 | -11 | -11 | -4 | -4 | -5 | -2 | -1 | -2 | -1 | -4 | -10 | -10 | -12 | -11 | |
91 | 70 | 66 | 87 | 95 | 88 | 39 | 58 | 45 | 43 | 71 | 69 | 69 | 86 | 97 | 92 | 88 | 89 | |
0 | 350 | 0 | 700 | 700 | 0 | 1100 | 1550 | 1050 | 1600 | 1800 | 1550 | 1900 | 1700 | 950 | 750 | 700 | 0 | |
 | 6:41 | — | — | 6:41 | — | — | 6:43 | — | — | 6:43 | — | — | 6:45 | — | — | 6:46 | — | — |
 | — | 4:29 | — | — | 4:29 | — | — | 4:29 | — | — | 4:29 | — | — | 4:29 | — | — | 4:29 | — |
Next 0-3 days weather summary:
A moderate fall of snow, heaviest on Fri afternoon. Temperatures will be below freezing (max 0°C on Sat morning, min -10°C on Thu morning). Wind will be generally light.
Next 4-6 days weather summary:
A light covering of new snow, mostly falling on Mon night. Freeze-thaw conditions (max 2°C on Sun afternoon, min -7°C on Tue afternoon). Wind will be generally light.
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Latest snow reports near Sun Valley (Nagano):
29 km away from Sun Valley (Nagano)
1 hour ago
Freezing rain reported from Nagano at 120 metres elevation 9 kms SSE of Iizuna Resort but it is forecast cold enough for snow at the ski area from Iizuna Resort
49 km away from Sun Valley (Nagano)
1 hour agoLight rain and snow reported from Takada at 18 metres elevation only 2 kms E of Kanayasan Ski Resort from Kanayasan
49 km away from Sun Valley (Nagano)
3 hours agoModerate to heavy freezing rain reported from Takada at 18 metres elevation only 2 kms E of Kanayasan but it is forecast cold enough for snow at the ski area from Kanayasan
Sun Valley (Nagano) Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 5 cm |
| Last snowfall: | 28 Nov 2025 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Nagano are reporting: powder (0) / good piste (0)
Snow History
Week 1 of December has on average:
1.5 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.0 | Powder days Fresh snow, limited sun, any wind. |
0.6 | Bluebird days Average snow, mostly sunny, light wind. |
Sun Valley (Nagano) Forecast Snowfall
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Photos of Sun Valley (Nagano)
Upload new photo Other resorts in Japan - Nagano are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Sun Valley (Nagano) at the specific elevation of 1510 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Sun Valley (Nagano). 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 Japan.
Click here to read further information on freezing levels and how we forecast our temperatures.
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