Granite Peak WI
The short answer: PassCast projects a median of 49" at Granite Peak for 2026-27 — 80% of a typical season — with a skiability rating of 19/100, ~1 powder days, and Dec–Jan as the prime window. Updated daily from 10,000 simulations.
80% of simulated seasons land between 32" and 74". Reseeded daily as ENSO observations, CPC outlooks, and SEAS5 runs update.
10,000 simulated 2026-27 seasonsENSO-weighted resampling of 36 real seasons (1990–2026) at Granite Peak, tilted by the live seasonal outlook
Highlighted bars span the middle half of outcomes (P25–P75). The yellow dashed line is a typical season — the median of the last 36 at this mountain.
What's driving this forecast
The 2026-27 season is simulated by resampling Granite Peak's historical seasons weighted toward El Niño analog years. NOAA CPC El Niño Advisory (June 11, 2026): El Niño conditions are present and expected to strengthen into winter 2026-27, with a 63% chance of a very strong event (Niño3.4 ≥ +2.0°C) during Nov-Jan. CPC DJF strength odds: very strong 46%, strong 33%, moderate 16%. IRI (June 22) concurs at 98% El Niño for DJF. Latest observed ONI (AMJ 2026): +1.0.
La Niña's colder pattern feeds both synoptic snow and lake-effect; El Niño's mild winters cut both — warm lakes don't help without cold air. CPC's 2026-27 outlook shows below-normal precipitation over the Lakes. Applied as a -7% tilt at partial weight.
Day-to-day weather models have no skill this far out, so the near-term forecast contributes 0% weight today. The simulation leans entirely on ENSO-conditioned climatology — exactly what an honest seasonal outlook should do in summer. Weighting shifts toward live forecasts as opening day approaches.
The regional readMidwest · from the 2026-27 outlook
Lake-effect country needs cold more than it needs moisture, and a strong El Niño starves it of both: mild Pacific air floods the continent's midsection and CPC's outlook leans dry over the Lakes. 1997-98 and 2015-16 were two of the region's leanest, shortest seasons. Snowmaking-heavy hills will operate; natural-snow gems like Mount Bohemia carry real bust risk. If the Arctic Oscillation dips negative, take the cold snap and ski it hard.
Month by monthENSO-conditioned analog medians vs a typical month — when this season should deliver
Prime window: Dec–Jan — the deepest contiguous stretch of the conditioned season. Aim the trip there.
The analog poolEvery season since 1990 at Granite Peak (ERA5, calibrated to the resort's reported average), colored by ENSO phase
Pass math for Granite Peak
Verdicts run the full simulated snow distribution through breakeven math at ~$129/day window prices. Add trip legs on the home page to compare passes across your whole season.
- Covers Granite Peak (5d).
- Snow-adjusted across the simulated seasons, expect ~9.3 covered days; the pass beats window tickets in 0% of 10,000 simulated seasons (mean shortfall $374).
- At this plan, window tickets or a cheaper product wins.
- Covers Granite Peak (7d).
- Snow-adjusted across the simulated seasons, expect ~9.3 covered days; the pass beats window tickets in 0% of 10,000 simulated seasons (mean shortfall $546).
- At this plan, window tickets or a cheaper product wins.
Granite Peak 2026-27: straight answers
- How much snow will Granite Peak get in the 2026-27 season?
- PassCast's latest 10,000-run simulation (reseeded 2026-07-10) puts the median at 49 inches — 80% of a typical season at Granite Peak — with 80% of outcomes between 32 and 74 inches. The forecast blends Granite Peak's own 36-season ENSO analog record with NOAA's seasonal outlook and the ECMWF SEAS5 ensemble.
- Is a season pass worth it for Granite Peak in 2026-27?
- Granite Peak is on Ikon Pass, Ikon Base for 2026-27, but with day caps at this mountain the pass only pays off combined with days at its other resorts — the simulator on this page runs that math for your plan.
- When is the best time to ski Granite Peak in 2026-27?
- Dec–Jan is the prime window — the deepest contiguous stretch of the ENSO-conditioned season at Granite Peak. Month-by-month medians are charted on this page.
- How reliable will the snow be at Granite Peak this season?
- The simulation gives Granite Peak a 27% chance of beating its typical season and a median of about 1 six-inch-plus powder days. Its skiability rating is 19/100 (“Marginal natural snow”), updated daily.
Sources: ERA5 reanalysis & multi-model forecasts via Open-Meteo · NOAA CPC ONI, ENSO advisory & seasonal outlook · ECMWF SEAS5 · pass prices verified July 2026. See methodology for the honest fine print.