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Mt. Oso

13,684 ft 13er San Juan Mtns Mineral County
🎯 High Wind Alert 10 to 15 mph at summit — dangerous crest exposure
🕒 Conditions updated 2:13 PM MT

🌤️ Weather

NOAA
Trailhead Now
51°F
Sunny
Summit Est. (13,684 ft)
38°F
Lapse rate estimate from 10,000ft trailhead
Wind at Trailhead
10 to 15 mph
From W
Lightning Risk
☀️ Low risk today
🎯 High Wind Alert 10 to 15 mph at summit — dangerous crest exposure
📅 Best day this week: Monday — Sunny · 62°F
This Afternoon
51°F
Sunny
10 to 15 mph
💧 2%
Tonight
30°F
Mostly Clear
5 to 15 mph
💧 2%
Sunday
58°F
Sunny
5 to 15 mph
💧 0%
Sunday Night
35°F
Mostly Clear
5 to 15 mph
💧 0%
Monday
62°F
Sunny
5 to 20 mph
💧 0%
Monday Night
38°F
Partly Cloudy
0 to 15 mph
💧 0%
Full Forecast Details

Sunny, with a high near 51. West wind 10 to 15 mph, with gusts as high as 25 mph.

🌡️ Elevation Forecast

Open-Meteo
🌡️ Elevation Forecast Unavailable

Microclimate data temporarily unavailable. Check back shortly.

❄️ Snow & Avalanche

CAIC
Route Snow Level
✅ Snow-Free
~0" estimated on route
SNOTEL Station
N/A
0" depth
CAIC Zone: Battlement Mesa, Cochetopa Hills, Elkhead Mountains, Elk Mountains +20 more
All ElevationsNo rating available
Start and end your day early, and most slopes will be safe to travel on. If you travel in steep, exposed terrain, avoid small pockets of wind-drifted snow or slopes with wet, heavy snow deeper than your ankles. Avoid travel under cornices, especially as the day warms.

⛰️ Avalanche data provided by Colorado Avalanche Information Center (CAIC) — avalanche.state.co.us

⚠️ Avalanche conditions are extremely dangerous and change rapidly. This data is for informational planning only — NOT a substitute for checking official avalanche forecasts, carrying proper avalanche safety equipment, or completing avalanche safety training. You assume all risk.

🏔️ CAIC Official Forecast → avalanche.org →

👥 Crowd Prediction

Today
🟢 Light
Before 7am — very light crowds
Optimal Start
5am
Lowest crowds in safe window
5am12pm8pm
Crowd estimates based on historical patterns, day of week, and seasonality.

🚗 Road & Access

COtrip
🚫 Seasonally Closed
Typical season: Jul-Sep. Verify current access.
📅 Typical season: Jul-Sep

🗺️ Route Info

14ers.com
Standard Route
West Slopes
Class Rating
Class 2
Difficulty
Moderate
Distance (RT)
12.0 mi
Elevation Gain
3,700 ft
Summit Elevation
13,684 ft
Trailhead Elevation
10,000 ft
Mountain Range
San Juan Mtns

📌 Plan Your Climb

⛺ Set Camp Alert — get notified when campsites open near this peak →