📷 Lost Trail Ski Area
North America
Lost Trail Ski Area
Status unconfirmed
Conditions data updated Fri, Aug 21, 03:05 PM UTC · informational only
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Status unconfirmed
Weather data is still collected for informational purposes.
Last Snowfall
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Past 24 Hours
0cm
Past 48 Hours
0cm
Past 10 Days
0cm
14-Day Forecast
0cm
Snow Depth
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Overview
Lost Trail Ski Area is a ski resort in North America, United States, currently closed for the season. Today's SnowSure™ Score is 10/100. Conditions last updated 2026-08-21 15:05 UTC.
Resort Guide
Lost Trail Ski Area is located on the Montana-Idaho border along the Continental Divide, offering a relaxed and welcoming atmosphere with a focus on uncrowded slopes and natural snow. The resort features over 1,800 acres of skiable terrain, 60 marked trails, and a mix of beginner to advanced runs, making it suitable for families and experienced skiers alike. Signature experiences include abundant powder days, scenic views of the Bitterroot Range, and a classic, no-frills mountain environment with essential amenities such as a day lodge, rentals, and ski school.
Gallery
Click to expand • 4 total photos
Terrain & lifts
Resort-reported stats for Lost Trail Ski Area
Lifts
8
Skiable area
1800 ac
Longest run
2.5 km / 1.6 mi
Resort Info
Ski passes
Indy Pass
Access tiers change by season — confirm benefits on the pass operator's site.
Top Après Ski
Unable to determine top apres ski place for this resort.
Status unconfirmed
SnowSure scores and forecasts below are for planning and reference only while the resort is closed.
Depth
Resort closed — no current ski-base depth.
Recent
No new snow has been reported in the past week.
Forecast
The 14-day snow outlook indicates no significant snowfall is anticipated.
Historic
Season-to-date snow levels are not available, while the 5-year average to date stands at 236cm.
Status unconfirmed · Data updated Fri, Aug 21, 03:05 PM UTC · informational only
Snow Summary
Updated Aug 21, 2026 at 3:05 PM
Historical data from Open-Meteo archive • Forecast from ECMWF IFS model
Snowfall Forecast Maps
Pacific Northwest & BC region
Current Conditions
Reported Fri, Aug 21, 03:05 PM UTC
Base
1951m
Temp
21.7°C
Wind
2.3km/h
Snow Depth
--
14-Day Forecast
0cm
Mid-Mountain
--m
Temp
--°C
Wind
3km/h
Snow Depth
--
14-Day Forecast
0cm
Summit
--m
Temp
--°C
Wind
3km/h
Snow Depth
--
14-Day Forecast
0cm
Live Conditions
Lost Trail Ski Area Webcam
Lost Trail Powder Mountain
Local Reports
0 reportsDaily Snowfall Forecast by Model
Black line = verified SnowSure™ blend (not a simple average). Weights update weekly from measured snowfall at SNOTEL stations and resort reports.
SnowSure™ blend — verified model weighting
The black line is not a simple average. For Lost Trail Ski Area (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 →Hourly Forecast Detail
AM / PM / Night breakdown with wind and freezing level
NWP models refresh up to 4× daily · Last synced Aug 21, 3:05 PM
Today 28 / 17 | Sat, Aug 22 25 / 159.3mm | Sun, Aug 23 24 / 140.3mm | Mon, Aug 24 26 / 10 | Tue, Aug 25 26 / 130.6mm | Wed, Aug 26 25 / 142.4mm | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Period | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night |
| Snow (cm) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Precip (mm) | 0 | 0 | 0 | 0.2 | 6.4 | 2.7 | 0.2 | 0.1 | 0 | 0 | 0 | 0 | 0.1 | 0.2 | 0.3 | 0 | 2.2 | 0.2 |
| Temp (°C) | 21 | 28 | 21 | 19 | 23 | 17 | 18 | 23 | 16 | 15 | 24 | 15 | 18 | 25 | 16 | 19 | 22 | 17 |
| Wind (km/h) | 1 | 8 | 3 | 9 | 9 | 8 | 9 | 15 | 10 | 5 | 9 | 3 | 8 | 9 | 7 | 10 | 12 | 11 |
| Gusts (km/h) | 7 | 27 | 12 | 28 | 30 | 24 | 31 | 47 | 27 | 17 | 30 | 19 | 30 | 38 | 35 | 29 | 35 | 32 |
14-Day Snow Forecast by Model
Summit elevation (--m)
10-Day Forecast
Today
21
☁️
28.3°
16.5°
12 km/h
Sat
22
⛈️
25.4°
14.6°
15 km/h
Sun
23
🌧️
23.9°
13.5°
17 km/h
Mon
24
⛅
25.5°
9.9°
11 km/h
Tue
25
🌧️
26.1°
13°
14 km/h
Wed
26
🌧️
24.8°
13.9°
14 km/h
Thu
27
🌧️
24.4°
11.3°
14 km/h
Fri
28
☀️
22.4°
7.2°
11 km/h
Sat
29
🌧️
20.3°
9.3°
14 km/h
Sun
30
🌧️
23.2°
6.5°
9 km/h
Summit elevation (--m) • ECMWF model
Season vs Historic
Updated Fri, Aug 21, 03:05 PM UTC
0cm
Season Total
This Season to Date
—
vs 5-Year Avg
Off-season · 236cm full-season avg
—
vs 30-Year Avg
Off-season · 238cm full-season avg
236cm
5-Yr Avg by Now
Lost Trail Ski Area Snow History
Average annual snowfall is 303cm with an average of 135 snowfall days per season. The table below shows monthly averages across 30 seasons of archive data (modeled snowpack at mid-elevation).
| Month | Avg Snowfall | Snowfall Days | Avg Base Depth | Max Base Depth | Biggest Snowfall |
|---|---|---|---|---|---|
| November | 36.6cm | 16 days | 15cm | 30cm | 8.3cm |
| December | 49.5cm | 20 days | 47cm | 67cm | 9.1cm |
| January | 40.7cm | 19 days | 73cm | 87cm | 8.2cm |
| February | 41.7cm | 19 days | 86cm | 98cm | 7.5cm |
| March | 43cm | 20 days | 93cm | 107cm | 8.6cm |
| April | 35.3cm | 17 days | 88cm | 102cm | 7.2cm |
| May | 21.9cm | 10 days | 48cm | 79cm | 7.1cm |
Source: SnowSure archive · Open-Meteo ERA5 reanalysis at mid-elevation. Depth is modeled, not resort-reported.
ENSO seasonal analog
History · not a forecastIn 10 past El Niño winters at Lost Trail Ski Area, ERA5 season snowfall median was 261 cm (103 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
MJJ 2026 · ANOM +1.39°C
Analog season median
261 cm
10 El Niño winters · 16% below median
All-season median
310 cm
Across 30 ERA5 seasons (2026-27)
| Phase | Seasons | Median | p25–p75 | Recent analogs |
|---|---|---|---|---|
| El Niñocurrent | 10 | 261 cm | 231 cm – 302 cm | 2023, 2019, 2018, 2015, 2014, 2009 |
| La Niña | 12 | 327 cm | 297 cm – 353 cm | 2022, 2021, 2020, 2017, 2011, 2010 |
| ENSO-neutral | 8 | 341 cm | 264 cm – 359 cm | 2025, 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.
Best Months to Visit
February
Peak Season
January
Peak Season
March
Good
December
Good
Note: Based on typical ski season patterns for this region.
Frequently asked questions about Lost Trail Ski Area
- Where is Lost Trail Ski Area?
- Lost Trail Ski Area is a ski resort in the United States.
- How big is Lost Trail Ski Area?
- Lost Trail Ski Area has 1,800 acres (728 hectares) of skiable terrain, 45 marked runs and 8 lifts.
- Which ski pass covers Lost Trail Ski Area?
- Lost Trail Ski Area is on the Indy Pass. Access terms such as blackout dates and day limits vary by pass tier, so check the pass operator for the current season.
- How much snow does Lost Trail Ski Area get in a typical season?
- Lost Trail Ski Area averages 300 inches / 762 cm of snowfall in a typical season. Any individual season can run well above or below that.
