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Sun Valley (Nagano) Weather (Next 3 days): The snow forecast for Sun Valley (Nagano) is: A heavy fall of snow, heaviest during Sun night. Temperatures will be below freezing (max -1°C on Tue morning, min -13°C on Sun night). Winds decreasing (fresh winds from the WNW on Sun night, light winds from the W by Wed afternoon).
Sun Valley (Nagano) Weather (Days 4-6): A light covering of new snow, mostly falling on Thu night. Freeze-thaw conditions (max 1°C on Sat morning, min -10°C on Wed night). Wind will be generally light.
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | -14 |  | ||||
| Bottom Lift: | -12 | |
Latest snow reports near Sun Valley (Nagano):
Snow is falling in Kitashinshu Kitashiga Takaifuji. from Kitashinshu Kitashiga Takaifuji
Snow falling at Nozawa Onsen. from Nozawa Onsen
Snowing in Karuizawa Snow Park. from Karuizawa Snow Park
There is heavy snow falling in Lotte Arai Resort. from Lotte Arai Resort
Great snow conditions throughout area. Cloudy and snowy today. from Ikenotaira Onsen Alpenblick
Monday 12 | Tuesday 13 | Wednesday 14 | Thursday 15 | Friday 16 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
|  |  |  |  |  |  |  | |  |  | | | | | | |
heavy snow | snow shwrs | clear | clear | some clouds | light snow | light snow | mod. snow | snow shwrs | some clouds | cloudy | light snow | light snow | snow shwrs | snow shwrs | clear | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
24 | — | — | — | — | 2 | 2 | 6 | 1 | — | — | — | 4 | 2 | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -12 | -9 | -7 | -5 | -1 | -2 | -6 | -8 | -7 | -6 | -1 | 0 | -2 | -3 | -4 | -4 |
min °C | -13 | -11 | -8 | -7 | -3 | -4 | -10 | -8 | -10 | -10 | -3 | -3 | -4 | -4 | -7 | -6 |
-24 | -17 | -12 | -12 | -10 | -12 | -15 | -14 | -14 | -14 | -7 | -8 | -9 | -8 | -7 | -8 | |
96 | 77 | 71 | 64 | 78 | 92 | 90 | 90 | 77 | 72 | 56 | 61 | 97 | 95 | 84 | 55 | |
0 | 0 | 450 | 0 | 1100 | 1200 | 300 | 250 | 450 | 0 | 950 | 1500 | 1100 | 900 | 900 | 400 | |
 | — | 6:58 | — | — | 6:58 | — | — | 6:58 | — | — | 6:56 | — | — | 6:56 | — | — |
 | — | — | 4:49 | — | — | 4:50 | — | — | 4:51 | — | — | 4:52 | — | — | 4:52 | — |
A heavy fall of snow, heaviest during Sun night. Temperatures will be below freezing (max -1°C on Tue morning, min -13°C on Sun night). Winds decreasing (fresh winds from the WNW on Sun night, light winds from the W by Wed afternoon).
A light covering of new snow, mostly falling on Thu night. Freeze-thaw conditions (max 1°C on Sat morning, min -10°C on Wed night). Wind will be generally light.
Latest snow reports near Sun Valley (Nagano):
Snow is falling in Kitashinshu Kitashiga Takaifuji. from Kitashinshu Kitashiga Takaifuji
Snow falling at Nozawa Onsen. from Nozawa Onsen
Snowing in Karuizawa Snow Park. from Karuizawa Snow Park
There is heavy snow falling in Lotte Arai Resort. from Lotte Arai Resort
Great snow conditions throughout area. Cloudy and snowy today. from Ikenotaira Onsen Alpenblick
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 19 cm |
| Last snowfall: | 10 Jan 2026 |
| Snow Alerts | Create Alert |
2.0 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
2.0 | Powder days Fresh snow, limited sun, any wind. |
1.8 | Bluebird days Average snow, mostly sunny, light wind. |
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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