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Sugarbush Climate Change Profile

Overall 29

Winter Resilience Score

More climate-resilient than 57% of Eastern & Midwestern resorts · 29% of all North American resorts

#30 of 68 in the East & Midwest · #156 of 220 overall

What goes into it, compared with Eastern & Midwestern resorts:

  • Season length at +2°C 20% better than 79%
  • Rain on the snowpack at +2°C 40% better than 12%
  • Snowmaking weather at +2°C 10% better than 54%
  • Terrain orientation 30% better than 78%

* A ranking against the North American resorts we rate, not a grade out of 100: 100 = most resilient in the field, 50 = middle of the pack. Higher scores mean the resort's terrain and weather profile are more resilient in preserving winter conditions, both today and in a future of warmer temperatures.

Sugarbush Climate Change Takeaways

  • Rain potential: About 30% of winter precipitation falls as rain today, rising to about 44% with 2°C of warming. Ranks #28 of 68 Eastern & Midwestern resorts for rain resilience (#138 of 220 overall).
  • Season length: About 135 naturally skiable days a season today (Nov–Apr); about 101 with 2°C of warming (34 fewer).
  • Snow preservation: Terrain faces mostly east and gets about 13% less winter sun than neutral terrain. Its orientation holds snow better than 37% of Eastern & Midwestern resorts (40% of all North American resorts).
  • Base area viability: At risk: the 1,480' base has about 114 naturally skiable days a season today, about 60 at +2°C.

Sugarbush Rain Resiliency Score

37

Less rain risk than 58% of Eastern & Midwestern resorts · 37% of all North American resorts

#28 of 68 in the East & Midwest · #138 of 220 overall

About 29.9% of winter precipitation falls as rain today, about 44% at +2°C.

How well Sugarbush's winter precipitation holds up as snow rather than rain. We rebuilt 40 winters of hourly weather at the resort's base, mid-mountain and peak, then estimated whether each hour's precipitation fell as rain or snow from temperature and humidity. To see what warming would do, we re-ran the same winters 1°C and 2°C warmer. The score is a ranking, not a grade: 100 = least rain risk in the field, 50 = middle of the pack.

Rain % of winter precipitation, Dec 1 – Apr 15
i

1986–2006 2006–2026 +1°C rise*(mid 2030s) +2°C rise*(2050)
4,080' Peak 13.5% 15.9% 18.8% 23.7%
2,780' Mid 24.6% 28.0% 32.9% 41.0%
1,480' Base 39.6% 42.2% 49.6% 57.8%

The first two columns are the real observed weather record, split into two equal halves. * The +1°C and +2°C columns are stress tests: the full observed record replayed with that much warming added, so they show sensitivity to warming, not a forecast for a specific year. Elevations are rounded to the nearest 10 ft.

Sugarbush Season Length

135 days

More naturally skiable days than 84% of Eastern & Midwestern resorts · 41% of all North American resorts

#12 of 68 in the East & Midwest · #130 of 220 overall

135 of 181 possible days today (Nov–Apr), about 101 at +2°C.

How many days a season Sugarbush has enough natural snow to ski, November through April. We simulated the snowpack day by day for 40 winters at the base, mid-mountain and peak — snow piling up, melting on warm days, and getting eaten away by rain — then ran the same winters 1°C and 2°C warmer.

Naturally skiable days, Nov 1 – Apr 30
i

Today +1°C rise*(mid 2030s) +2°C rise*(2050)
4,080' Peak 158 153 149
2,780' Mid 145 133 118
1,480' Base 114 85 59
Skiable by Christmas 68% → 43% of winters with a skiable base on Dec 20, today → +2°C
Rain-on-snow days 11.6 → 10.7 per season with real rain (5+ mm) falling on the snowpack — slush, then ice
Snowmaking hours 740 → 560 hours cold enough to make snow at the base, Nov–Dec
Why rain matters more than you'd think

Warmer winters don't just turn some snowfall into rain. Rain also eats away the snow that's already on the ground, in four ways:

  1. The rain itself is warm. This is the smallest effect — a soaking rain only melts a sliver of snow directly.
  2. Rainstorms bring warm, humid air. When moist air hits the snow, water condenses on the surface and releases heat. That's the main reason a single warm storm can wipe out a foot of base in a day.
  3. Rain primes the snowpack to melt. Cold snow soaks up rain and refreezes it, which warms the whole pack. Once it's soaked and at the melting point, every warm hour after that goes straight to melting.
  4. Rain wrecks the surface. Even when the base survives, rain leaves slush that freezes into ice. That's why we count rain-on-snow days separately — they hurt your ski day even when the snowpack doesn't disappear.

Our model simulates all four, using a simplified version of the snowmelt model the U.S. National Weather Service uses for river forecasting.

Natural snow only — no snowmaking or grooming, so resorts that make a lot of snow stay open longer than these numbers. “Skiable” means at least 3 inches of snow-water in the snowpack (roughly a 12–18 inch settled base). Snowfall is scaled to match Sugarbush's average snowfall. Melt follows the sun on Sugarbush's actual runs: shady, north-facing slopes hold snow longer than sunny ones. * Stress tests, not forecasts: the same winters replayed warmer. The model was checked against real snowpack measurements at 105 SNOTEL stations in the western U.S.; there are no SNOTEL stations near Sugarbush, so treat these numbers as a rougher estimate.

Sugarbush Snow Preservation Score

−13% less sun

Terrain holds snow better than 37% of Eastern & Midwestern resorts · 40% of all North American resorts

#42 of 66 in the East & Midwest · #129 of 216 overall

Sugarbush's runs get 13% less winter sun than the same slopes would facing every direction equally. Typical resort: 17% less.

How well Sugarbush's runs are oriented to hold onto snow. North-facing slopes get less direct sun and keep snow longer; south-facing slopes lose it faster. We measured the direction and steepness of 142 mapped runs and compared the sunshine they receive with what the same slopes would get if they faced every direction equally, so this score reflects terrain orientation only, not latitude or elevation (those are covered by the rain score above).

Share of mapped terrain facing each direction. Trail data © OpenStreetMap contributors via OpenSkiMap.