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Sun Valley (Nagano) Weather (Next 3 days): The snow forecast for Sun Valley (Nagano) is: A light covering of new snow, mostly falling on Wed night. Freeze-thaw conditions (max 6°C on Fri night, min -5°C on Wed night). Wind will be generally light.
Sun Valley (Nagano) Weather (Days 4-6): Mild with heavy rain (total 20.0mm), heaviest during Sun night. Becoming colder with a moderate fall of snow heaviest on Sun night. Freeze-thaw conditions (max 9°C on Sun afternoon, min -6°C on Mon night). Wind will be generally light.
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | -5 |  | ||||
| Bottom Lift: | -5 | |
Latest snow reports near Sun Valley (Nagano):
Rain and snow or hail reported from Nagano at 120 metres elevation 8 kms SE of Iizuna Kogen Ski Resort from Iizuna Kogen
Continuous light rain reported from Nagano at 120 metres elevation 8 kms SE of Iizuna Kogen but it is forecast cold enough for snow at the ski area from Iizuna Kogen
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 | |
 |  |  |  | |  |  | | | |  | | | | | | |  | |
some clouds | light snow | mod. snow | snow shwrs | snow shwrs | clear | clear | clear | some clouds | some clouds | rain shwrs | some clouds | some clouds | some clouds | mod. snow | light snow | light snow | snow shwrs | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | 6 | 1 | — | — | — | — | — | — | — | — | — | — | 7 | 1 | 4 | 1 | |
— | — | — | — | — | — | — | — | — | — | 1 | — | — | — | 19 | — | — | — | |
max °C | 1 | 1 | -2 | -4 | -4 | 1 | 3 | 5 | 6 | 6 | 6 | 7 | 8 | 9 | 7 | -1 | -3 | -5 |
min °C | -2 | 0 | -5 | -5 | -5 | -2 | 2 | 4 | 5 | 5 | 6 | 6 | 7 | 8 | -1 | -2 | -5 | -6 |
-5 | -3 | -10 | -10 | -9 | -4 | -1 | 1 | 2 | 2 | 3 | 3 | 4 | 5 | -5 | -6 | -10 | -11 | |
78 | 80 | 98 | 91 | 87 | 49 | 38 | 50 | 27 | 90 | 91 | 84 | 82 | 84 | 96 | 99 | 99 | 94 | |
1250 | 1700 | 950 | 800 | 850 | 1000 | 2000 | 2450 | 2650 | 2500 | 2500 | 2700 | 3000 | 3000 | 2900 | 1300 | 1000 | 550 | |
 | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — |
 | — | 4:30 | — | — | 4:30 | — | — | 4:31 | — | — | 4:31 | — | — | 4:32 | — | — | 4:32 | — |
A light covering of new snow, mostly falling on Wed night. Freeze-thaw conditions (max 6°C on Fri night, min -5°C on Wed night). Wind will be generally light.
Mild with heavy rain (total 20.0mm), heaviest during Sun night. Becoming colder with a moderate fall of snow heaviest on Sun night. Freeze-thaw conditions (max 9°C on Sun afternoon, min -6°C on Mon night). Wind will be generally light.
Latest snow reports near Sun Valley (Nagano):
Rain and snow or hail reported from Nagano at 120 metres elevation 8 kms SE of Iizuna Kogen Ski Resort from Iizuna Kogen
Continuous light rain reported from Nagano at 120 metres elevation 8 kms SE of Iizuna Kogen but it is forecast cold enough for snow at the ski area from Iizuna Kogen
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 3 cm |
| Last snowfall: | 16 Dec 2025 |
| Snow Alerts | Create Alert |
2.0 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
2.2 | Powder days Fresh snow, limited sun, any wind. |
0.8 | 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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