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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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Mt St Louis Moonstone at 396 m altitude
Issued by Snow-Forecast.com at: 12 pm (local time) / 18 Dec 2025
Now
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | | | | | | | |  |  | |  | | |  | |
cloudy | cloudy | light snow | light snow | light snow | light snow | light snow | light snow | light snow | light snow | light snow | some clouds | some clouds | cloudy | mod. snow | light snow | light snow | snow shwrs | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | 3 | 1 | 2 | 1 | — | 1 | 1 | 2 | 1 | — | — | — | 6 | — | — | — | |
— | — | 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 5 | 6 | 6 | -4 | -6 | -7 | -2 | -1 | 0 | -6 | -7 | -10 | -7 | -5 | -2 | 0 | 0 | -5 |
min °C | 4 | 6 | 0 | -4 | -8 | -8 | -5 | -2 | -7 | -6 | -9 | -14 | -11 | -5 | -4 | -1 | -1 | -15 |
-2 | 1 | -7 | -13 | -18 | -18 | -12 | -9 | -17 | -16 | -18 | -19 | -11 | -10 | -10 | -8 | -8 | -22 | |
80 | 75 | 99 | 83 | 91 | 78 | 70 | 86 | 79 | 83 | 85 | 81 | 79 | 77 | 91 | 92 | 89 | 75 | |
2450 | 2550 | 2400 | 0 | 0 | 0 | 0 | 0 | 300 | 0 | 0 | 0 | 0 | 0 | 0 | 300 | 400 | 0 | |
 | 7:50 | — | — | 7:50 | — | — | 7:50 | — | — | 7:52 | — | — | 7:52 | — | — | 7:52 | — | — |
 | — | 4:38 | — | — | 4:38 | — | — | 4:39 | — | — | 4:39 | — | — | 4:40 | — | — | 4:40 | — |
Next 0-3 days weather summary:
Mild at first with light rain (total 4.0mm) on Thu night followed by colder weather and light fall of snow, heaviest on Thu night. Freeze-thaw conditions (max 6°C on Thu afternoon, min -8°C on Fri afternoon). Winds decreasing (strong winds from the W on Fri afternoon, calm by Fri night).
Next 4-6 days weather summary:
A light covering of new snow, mostly falling on Mon night. Temperatures will be below freezing (max 0°C on Tue morning, min -15°C on Tue night). Winds decreasing (strong winds from the W on Sun morning, calm by Mon morning).
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Snow Radar
Latest snow reports near Mt St Louis Moonstone:
Mt St Louis Moonstone Snow Conditions
| Top snow depth: | 79 cm |
|---|---|
| Bottom snow depth: | 51 cm |
| Fresh snowfall depth: | — |
| Last snowfall: | 15 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in Canada - Ontario are reporting: powder (0) / good piste (0)
Snow History
Week 3 of December has on average:
0.3 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.1 | Powder days Fresh snow, limited sun, any wind. |
0.9 | Bluebird days Average snow, mostly sunny, light wind. |
Mt St Louis Moonstone Forecast Snowfall
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Photos of Mt St Louis Moonstone
Ski at Mt St Louis by Roro
Ski at Mt St Louis by Roro
Ski at Mt St Louis by Roro
Upload new photo Other resorts in Canada - Ontario are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Mt St Louis Moonstone at the specific elevation of 396 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Mt St Louis Moonstone. 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 Canada.
Click here to read further information on freezing levels and how we forecast our temperatures.
Visitor Reviews of Mt St Louis Moonstone
Overall 2.3 Based on 2 votes and 6 reviews
- Snowsure
- Variety of pistes
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- Raul from Canada writes:
The owners are investing in this resort, and it is one of the best near Toronto, but the parking lot is awful and needs a lot of work. Cannot be that much to put asphalt. The potholes are enormous, and are getting worse every year. Not only cars get damaged, but a whole horse could get lost in them. C'mon guys, if you love us take some action. I shudder every time I see the entrance to the parking lot. In days with crowds you have to drive around quite a bit through the potholes to find a spot to park.
Visitor Reviews of Mt St Louis Moonstone
Raul from Canada writes:
The owners are investing in this resort, and it is one of the best near Toronto, but the parking lot is awful and needs a lot of work. Cannot be that much to put asphalt.
The potholes are enormous, and are getting worse every year. Not only cars get damaged, but a whole horse could get lost in them. C'mon guys, if you love us take some action.
I shudder every time I see the entrance to the parking lot. In days with crowds you have to drive around quite a bit through the potholes to find a spot to park.
Read 5 more reviews of Mt St Louis Moonstone or submit your own
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