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Mammoth Mountain Back on Top with Deepest Snow in North America
Updated March 19, 2025: California gets buried in 5 feet (1.5m) of snow. Jackson Hole surpasses 400" (10m) this season. More powder coming for Western Canada - click for details.
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Osa at 865 m altitude
Issued by Snow-Forecast.com at: 2 pm (local time) / 22 Mar 2025
Now
Sat 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | ||||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | |  |  | | | | | | | |  |  |  |  |  | |  | |
clear | clear | clear | clear | cloudy | some clouds | clear | clear | clear | clear | clear | clear | clear | some clouds | heavy rain | mod. rain | light rain | rain shwrs | some clouds | light snow | |
km/h | ||||||||||||||||||||
Snow map |  |  |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2.0 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | 12 | 8 | 5 | 3 | — | 1.0 | |
max°C | 13 | 11 | 13 | 12 | 12 | 13 | 12 | 11 | 12 | 13 | 13 | 14 | 16 | 15 | 13 | 16 | 15 | 10 | 5 | 4 |
min°C | 11 | 10 | 12 | 11 | 10 | 10 | 11 | 9 | 9 | 13 | 10 | 10 | 15 | 14 | 13 | 14 | 14 | 9 | 3 | 0 |
7 | 6 | 9 | 8 | 7 | 6 | 7 | 4 | 5 | 10 | 6 | 7 | 14 | 12 | 9 | 12 | 12 | 6 | -3 | -6 | |
37 | 28 | 31 | 41 | 31 | 50 | 56 | 61 | 67 | 37 | 56 | 92 | 60 | 76 | 91 | 94 | 98 | 97 | 72 | 76 | |
2450 | 2650 | 2550 | 2700 | 2900 | 2350 | 2400 | 2550 | 2550 | 3000 | 3100 | 3350 | 3500 | 3800 | 3350 | 3850 | 3750 | 3550 | 3450 | 1200 | |
 | — | — | 6:11 | — | — | 6:09 | — | — | 6:07 | — | — | 6:07 | — | — | 6:05 | — | — | 6:03 | — | — |
 | 6:22 | — | — | 6:23 | — | — | 6:24 | — | — | 6:25 | — | — | 6:25 | — | — | 6:27 | — | — | 6:28 | — |
Next 0-3 days weather summary:
Mostly dry. Very mild (max 13°C on Sat afternoon, min 9°C on Mon night). Winds increasing (moderate winds from the W on Sun night, strong winds from the WSW by Mon morning).
Next 4-6 days weather summary:
Heavy rain (total 28.0mm), heaviest during Thu morning. Very mild (max 16°C on Wed afternoon, min 9°C on Fri morning). Winds increasing (light winds from the SW on Wed afternoon, near gales from the S by Thu morning).
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Latest snow reports near Osa:
Osa Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 19 Mar 2025 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Hiroshima are reporting: powder (0) / good piste (0)
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Snow History
Week 4 of March has on average:
0.1 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.0 | Powder days Fresh snow, limited sun, any wind. |
0.4 | Bluebird days Average snow, mostly sunny, light wind. |
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Other resorts in Japan - Hiroshima are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Osa at the specific elevation of 865 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Osa. 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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Free Snow-Forecast.com weather widget for your website
The Osa skiing weather widget is available to embed on external websites free of charge. It provides a daily summary of our Osa snow forecast and current weather conditions. Simply go to the feed configuration page and follow the 3 simple steps to grab the custom html code snippet and paste it into your own site. You can choose the snow forecast elevation (summit, mid-mountain or bottom lift) and metric/imperial units for the snow forecast feed to suit your own website…. Click here to get the code.
View detailed snow forecast for Osa at:
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