# Keystone Resort snow history, season 2026-27

Canonical page: https://www.peakcam.io/resorts/keystone/history  ·  Resort: https://www.peakcam.io/resorts/keystone  ·  JSON: https://www.peakcam.io/api/v1/resorts/keystone/history

Through Oct 18, the Keystone Resort SNOTEL station (Grizzly Peak) has measured 0 in. of snow since Oct 1, 0% of the 30-winter normal to date, 0 powder days (8 in. or more); a year ago it had 5 in.

Source: NRCS SNOTEL station Grizzly Peak, 11,110 ft (measured, quality-controlled by PeakCam, synced every 6 h). Daily new snow = positive change in station depth, a floor on what fell.

## This season to date

- Snow since 2026-10-01: 0 in (18 days measured, 0 snow days, 0 powder days at ≥ 8 in)
- Base now: 0 in
- Percent of normal to date: 0% of the 25-winter mean (6.2 in); 0% of the last 10 winters (6.7 in)
- Same day last season (2025-26): 5 in, 0 powder days, base 3 in; this season -5 in
- Trend: steady (last 7 days 0 in, the 7 before 0 in)

## Season curve vs normal

| Date | Day | Measured so far | 30-winter mean | p25–p75 | Last 10 winters |
| --- | --- | --- | --- | --- | --- |
| 2026-10-01 | 1 | 0 in | 0.5 in | 0 in – 0 in | 1.1 in |
| 2026-10-20 | 20 | 0 in | 6.2 in | 1 in – 9 in | 6.7 in |

Full daily curve (20 points) and the band for days 1–273: https://www.peakcam.io/api/v1/resorts/keystone/history

## Past seasons (9)

| Season | Snowfall | % of normal | Snow days | Powder days | Biggest storm | Deepest base | ENSO |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 2025-26 | 126 in | 84% | 51 | 3 | 12 in (2025-12-05 to 2025-12-06) | 44 in (2026-03-06) | Neutral (ONI -0.39) |
| 2024-25 | 191 in | 128% | 65 | 4 | 22 in (2025-02-14 to 2025-02-18) | 71 in (2025-03-22) | Neutral (ONI -0.46) |
| 2023-24 | 163 in | 109% | 57 | 4 | 21 in (2024-01-12 to 2024-01-15) | 62 in (2024-03-14) | El Niño (ONI +1.84) |
| 2022-23 | 148 in | 99% | 70 | 2 | 17 in (2023-03-10 to 2023-03-12) | 64 in (2023-03-12) | La Niña (ONI -0.55) |
| 2021-22 | 150 in | 101% | 74 | 3 | 14 in (2022-01-04 to 2022-01-06) | 58 in (2022-04-24) | La Niña (ONI -0.76) |
| 2020-21 | 151 in | 101% | 67 | 0 | 12 in (2021-03-13 to 2021-03-17) | 53 in (2021-03-17) | La Niña (ONI -0.99) |
| 2019-20 | 170 in | 114% | 64 | 2 | 19 in (2019-12-12 to 2019-12-14) | 64 in (2020-02-16) | El Niño (ONI +0.71) |
| 2018-19 | 219 in | 147% | 74 | 4 | 23 in (2018-11-01 to 2018-11-05) | 87 in (2019-03-08) | El Niño (ONI +0.99) |
| 2017-18 | 183 in | 123% | 57 | 6 | 19 in (2018-04-06 to 2018-04-08) | 69 in (2018-04-08) | La Niña (ONI -0.71) |

Weekly cumulative totals per season are in the JSON (`pastSeasons[].weeklyCumulativeIn`).

## Monthly climatology

| Month | Avg snowfall (30 winters) | Last 10 winters | Snow days | Avg depth | Biggest storm | Winters |
| --- | --- | --- | --- | --- | --- | --- |
| Oct | 12.5 in | 13.3 in (106%) | 5.4 | 2.8 in | 17 in (2010-10-25) | 25 |
| Nov | 19.4 in | 21.3 in (110%) | 7 | 13.7 in | 23 in (2018-11-01) | 25 |
| Dec | 22 in | 25.3 in (115%) | 8 | 26.7 in | 22 in (2014-12-20) | 25 |
| Jan | 22.3 in | 26.9 in (121%) | 8.2 | 37.3 in | 26 in (2017-01-08) | 24 |
| Feb | 21.8 in | 23.5 in (108%) | 8.6 | 46.8 in | 22 in (2014-02-06) | 23 |
| Mar | 21 in | 25.5 in (121%) | 7.6 | 53.5 in | 31 in (2003-03-16) | 25 |
| Apr | 20.4 in | 21.6 in (106%) | 6.6 | 49.5 in | 20 in (2009-04-16) | 25 |
| May | 11.8 in | 15.4 in (131%) | 4.3 | 28.5 in | 19 in (2011-05-18) | 25 |
| Jun | 0.5 in | 0.6 in (120%) | 0.5 | 2.5 in | 2 in (2020-06-09) | 25 |
| Jul | 0.3 in | 0 in (0%) | 0.3 | 0.1 in | 1 in (2006-07-24) | 25 |
| Aug | 0.3 in | 0 in (0%) | 0.3 | 0.1 in | 1 in (2006-08-05) | 25 |
| Sep | 1.3 in | 0.5 in (38%) | 0.8 | 0.2 in | 5 in (2013-09-22) | 25 |
- Dec: The last ten winters averaged 25.3 in. in Dec, 15% above the 30-winter normal of 22 in.; both are shown.
- Jan: The last ten winters averaged 26.9 in. in Jan, 21% above the 30-winter normal of 22.3 in.; both are shown.
- Mar: The last ten winters averaged 25.5 in. in Mar, 21% above the 30-winter normal of 21 in.; both are shown.
- May: The last ten winters averaged 15.4 in. in May, 31% above the 30-winter normal of 11.8 in.; both are shown.
- Jun: The last ten winters averaged 0.6 in. in Jun, 20% above the 30-winter normal of 0.5 in.; both are shown.
- Jul: The last ten winters averaged 0 in. in Jul, 100% below the 30-winter normal of 0.3 in.; both are shown.
- Aug: The last ten winters averaged 0 in. in Aug, 100% below the 30-winter normal of 0.3 in.; both are shown.
- Sep: The last ten winters averaged 0.5 in. in Sep, 62% below the 30-winter normal of 1.3 in.; both are shown.
Averages per calendar month at the Grizzly Peak SNOTEL station over the 30 most recent complete winters and, separately, the 10 most recent. Snowfall is the sum of daily depth increases, a measured floor; a snow day has at least 1 in; the storm is the biggest run of consecutive snow days starting in that month.

Methodology: https://www.peakcam.io/methodology#history  ·  Attribution: PeakCam (https://www.peakcam.io), SNOTEL data: USDA NRCS  ·  Terms: https://www.peakcam.io/about#terms