No snow yet. Snow depth and the seven-day outlook appear once snow is on the ground or forecast.
A weather-model figure, worked out the same way for every ski area, and lower than what actually falls. Use it to compare ski areas, not against the resort’s own totals. How we measure →
We do not show a snow depth here. The weather model we use reports snow lying on the ground — it knows nothing about grooming or snowmaking, and it is not the base depth a ski area publishes. In Japan we can check our figures against 234 weather stations. Outside Japan there is nothing to check them against, so we do not print a number we have not verified.
Rotarun Ski Area, in United States, runs from 1,670 m at the base to 1,790 m at the top. Its mapped area is about 0.6 km across, with 11 marked runs and 2 lifts (about 2.7 km of piste in all).
Over the last twelve winters the ERA5 weather model gives it 134 cm of snowfall a season, 1,892nd (tied) of 3,069 worldwide and 258th in the United States. It swings a lot from year to year: the biggest winter, 2016/17 (252 cm), brought more than 3 times as much as the leanest, 2020/21 (72 cm). December brings as much snow as January here (42 and 32 cm on average).
Modelled from weather data the same way at all 3,069 ski areas we cover. These are not the resort’s own published figures.
Within 50 km in a straight line. Ski areas in the same weather-model cell (about 30 km across) get the same figure.
| Ski area | Distance | Seasonal snowfall | World rank |
|---|---|---|---|
| Sun Valley - Bald Mountain | 19.0 km | 194 cm | 1201 |
| Sun Valley - Dollar Mountain | 21.0 km | 166 cm | 1457 |
| Soldier Mountain Ski Area | 38.0 km | 211 cm | 1048 |
Counted from the runs and lifts drawn on OpenStreetMap, within the boundary of the ski area. These are not the resort’s own published figures.
91% of the vertical on the runs descends to the north or east. Those slopes get the least sun, so the snow lasts longer.
See past trail maps on Skimap.org ↗
Source: OpenSkiMap (© OpenStreetMap contributors, ODbL 1.0). How finely ski areas are drawn varies by region, so treat the counts as indicative. Vertical is the difference between the highest and lowest points of the mapped runs and lifts.
The most snow falls in December. March brings 81% of January’s snowfall.
Across the 12 winters measured, the average is 134 cm, and 6 of them fell short of it. The leanest was 2020/21 with 72 cm; the biggest was 2016/17 with 252 cm (3.5 times as much). For 33% of the 534 ski areas in the United States the leanest winter was 2015/16; here it was a different one.
Snowfall each winter (December–March total). The dashed line is the average; the numbers mark the leanest and the biggest winter.
The weather map, and where it sits among nearby ski areas.
Other booking sites: Booking.com ↗ · Agoda ↗
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