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Diamond Peak ski resort

North America

Diamond Peak Snow Forecast

Projected to open December 12, 2026

Best months to book: February, March, January · last season + 30-yr record

Projected to open Dec 12 — closed April 5

Weather data is still collected for informational purposes.

Last Snowfall

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Past 24 Hours

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7-Day Forecast

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Snow Depth

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Updated: Oct 12, 10:01 PM•Weather at base: 1,617m
SnowSure™ Score2025-26 season
Projected to open Dec 12

Diamond Peak is projected to open December 12, 2026. Here is when it is usually best to book.

Best months to book: February, March, January. Best weeks: 1 Mar–7 Mar, 22 Feb–28 Feb, 8 Mar–14 Mar.Dec3Jan1Feb2MarAprOpens 12 DecCloses 5 Apr

Best months to book

  1. #1February84cm avg · last season 34.7
  2. #2March84cm avg · last season 22.6
  3. #3January93cm avg

Best weeks to book

  1. #1 1 Mar – 7 Mar · last season 33.1
  2. #2 22 Feb – 28 Feb · last season 34.7
  3. #3 8 Mar – 14 Mar · last season 26.1

Ranked on 25% last season's SnowSure score (2025-26) · 75% 30-year snowfall and base-depth record. The live score returns when the lifts turn.

Snow Summary

2,188m

Updated Oct 12, 2026 at 10:01 PM

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Past 10d
7-Day Forecast
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Now12
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Days 8–14 and every model are in Pro.Unlock with Pro
Past
Today
Forecast

Hourly Forecast

12 Mon
4° / -8°
13 Tue
9° / -8°
14 Wed
12° / -0°
15 Thu
16° / -0°
16 Fri
19° / 1°
17 Sat
11° / -1°
18 Sun
8° / -1°
Days 8–14 and every model are in SnowSure Pro.Unlock with Pro
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight19 Mon20 Tue21 Wed22 Thu23 Fri24 Sat25 Sun
Conditions☀️🌤️☀️🌤️🌤️🌤️☀️☀️☀️☀️☀️☀️☀️☀️☀️☀️☀️🌤️☀️☀️☀️
clearmostly clearclearmostly clearmostly clearmostly clearclearclearclearclearclearclearclearclearclearclearclearmostly clearclearclearclear
Summit2,188 mModeled
Temp°C-4°3°-6°-3°8°-3°3°11°2°4°15°3°6°18°5°5°10°3°4°8°2°
Feels like°C-8°-1°-9°-6°5°-7°0°8°-2°0°11°-2°2°14°1°2°7°1°1°4°-1°
Snowcm·····················
Precipmm·····················
Windkm/h4942632631210111147262574
Mid-mountain1,903 mModeled
Temp°C-2°5°-4°-1°10°-1°5°13°3°6°17°4°8°19°7°7°12°5°6°10°3°
Feels like°C-6°1°-7°-4°7°-5°2°10°0°2°13°1°4°17°3°4°10°3°3°7°1°
Snowcm·····················
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Windkm/h4942632631210111147262574
Base1,617 mModeled
Temp°C0°7°-2°1°12°1°7°15°5°8°19°6°10°21°9°9°14°7°8°12°5°
Feels like°C-4°3°-5°-2°9°-2°4°12°3°4°16°3°6°19°5°6°12°5°5°9°3°
Snowcm·····················
Precipmm·····················
Windkm/h4942632631210111147262574
Humidity%763988773478533565612966512054565274644788
0°C linem—————————————————————
Sunhours

Freeze line is the height where rain turns to snow. Plain: straight from the models. Marked ○: estimated from temperature. Sun is hours of actual sunshine, not day length; blank means we have no reading.

Forecast Range · SnowSure Pro

Every model for Diamond Peak, side by side for 14 days

Where the models agree, where they split, and which one has been most accurate here.

Unlock with Pro

SnowSure™ blend — verified model weighting

The black line is not a simple average. For Diamond Peak (rockies), we combine seven global weather models using weights learned from daily forecast verification — comparing each model's prediction to measured snowfall (SNOTEL, resort reports, ERA5).

  • 1.Horizon buckets: days 1–3, 4–7, and 8–14 each get separate weights — short-range skill differs from long-range.
  • 2.Regional calibration: weights come from verified error in this geography (Rockies, Alps, Japan, etc.), recalculated weekly.
  • 3.Ground truth only: we never grade a forecast against another model — only against measured snow.

Building verification history for this resort.

How we verify forecasts →

Snowfall Forecast Maps

Pacific Northwest & BC region

14 Day map is in SnowSure ProUnlock with Pro

El Niño Outlook · Winter 2026-27

Diamond Peak El Niño rank & forecast

Diamond Peak ranks #235 of 488 SnowSure resorts — Tier C, −1% in strong El Niño winters.

Tier C — ENSO-proof: Strong El Niño winters looked like a normal year here — within about ±3% of this resort’s own 30-year snowfall average. Not a jackpot, not a bust: a hedge if you’re planning around El Niño.

#235 of 488Tier C — ENSO-proof

Strong-event signal: −1% vs this resort's 30-yr avg

In the three strongest El Niño winters on record ('97-98, '15-16, '23-24), Diamond Peak averaged -1% versus its own 30-year snowfall baseline. El Niño has historically made little difference here — this is an ENSO-proof mountain, for winter 2026-27 as in past events. Analog winters: '97-98 -27%, '15-16 -14%, '23-24 +37%. A pattern, not a promise.

'97-98 −27%'15-16 −14%'23-24 +37%

ENSO seasonal analog

History · not a forecast

In 10 past El Niño winters at Diamond Peak, ERA5 season snowfall median was 419 cm (165 in), about 16% below this resort’s long-term median. This is a historical analog from reanalysis — not a prediction of this winter’s storm track.

Prevailing ONI

El Niño

JAS 2026 · ANOM +2.16°C

Analog season median

419cm

10 El Niño winters · 16% below median

All-season median

497cm

Across 30 ERA5 seasons (2026-27)

PhaseSeasonsMedianp25–p75Recent analogs
El Niñocurrent10419cm391cm – 567cm2023, 2019, 2018, 2015, 2014, 2009
La Niña12627cm508cm – 682cm2022, 2021, 2020, 2017, 2011, 2010
ENSO-neutral8487cm388cm – 580cm2025, 2024, 2016, 2013, 2012, 2003

Season snowfall from Open-Meteo ERA5 reanalysis (~9 km). ENSO phase from NOAA CPC Oceanic Niño Index. Relative phase differences are more trustworthy than absolute cm totals. Source: NOAA CPC Oceanic Niño Index + Open-Meteo ERA5 via SnowSure season archive.

Local Reports

0 reports

How accurate is this forecast?

We verify every forecast against what actually fell — see the model-by-model results.

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Frequently asked questions about Diamond Peak

How much snow is Diamond Peak getting this week?
No significant snow is forecast at Diamond Peak over the next 7 days.
What is the 14-day snow forecast for Diamond Peak?
The full 14-day forecast for Diamond Peak — the SnowSure™ blend and every model we track, day by day — is part of SnowSure Pro. The first 7 days are free on this page.
How accurate are SnowSure forecasts for Diamond Peak?
We verify every forecast against what actually fell and publish the results — see our forecast verification pages for model-by-model accuracy, updated continuously.