Next 3 days weather summary:Light rain (total 6.0mm), mostly falling on Fri afternoon. Very mild (max 15°C on Thu morning, min 2°C on Fri night). Wind will be generally light. | Days 4-6 weather summary:A dusting of snow giving way to moderate rain (total 15.0mm) heaviest on Mon afternoon. Very mild (max 13°C on Sun afternoon, min 1°C on Sat morning). Wind will be generally light. | |||||||||||||||||
Wednesday 6 | Thursday 7 | Friday 8 | Saturday 9 | Sunday 10 | Monday 11 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | |  | |  |  |  |  | |  | |  | |  | | |
cloudy | some clouds | clear | some clouds | some clouds | some clouds | cloudy | light rain | rain shwrs | light snow | rain shwrs | clear | clear | some clouds | cloudy | light rain | mod. rain | rain shwrs | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | 2 | 4 | 1 | 1 | — | — | — | — | 1 | 7 | 5 | |
max °C | 12 | 12 | 10 | 15 | 15 | 11 | 14 | 12 | 7 | 4 | 5 | 5 | 11 | 13 | 9 | 9 | 10 | 7 |
min °C | 10 | 11 | 9 | 12 | 12 | 10 | 11 | 9 | 2 | 1 | 4 | 3 | 8 | 10 | 7 | 9 | 8 | 6 |
9 | 11 | 8 | 12 | 12 | 10 | 10 | 7 | -2 | -3 | 0 | 0 | 8 | 9 | 6 | 9 | 8 | 6 | |
56 | 54 | 64 | 55 | 64 | 81 | 70 | 69 | 92 | 97 | 61 | 43 | 36 | 28 | 76 | 72 | 67 | 75 | |
3550 | 3450 | 3750 | 3600 | 3650 | 3500 | 3400 | 2950 | 2300 | 1600 | 2050 | 2150 | 2800 | 3000 | 3200 | 2850 | 2800 | 2600 | |
 | 4:47 | — | — | 4:46 | — | — | 4:45 | — | — | 4:43 | — | — | 4:43 | — | — | 4:41 | — | — |
 | — | 6:37 | — | — | 6:38 | — | — | 6:39 | — | — | 6:39 | — | — | 6:40 | — | — | 6:42 | — |
Latest snow reports near Sun Valley (Nagano):
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 1 cm |
| Last snowfall: | 4 May 2026 |
| Snow Alerts | Create Alert |
0.0 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.0 | Powder days Fresh snow, limited sun, any wind. |
0.1 | 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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