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Mammoth Mountain

Mountain bike trail conditions · California 37.633° N  119.013° W   9,331 FT Verified

DRY: Rideable

No significant rain in the forecast.

Recent rain
No measurable rain in the past week
Today
57°Fclear
  • Wed 10/7, no measurable rain, daily high 64 degrees Fahrenheit, modeled conditions: DUSTY
  • Thu 10/8, no measurable rain, daily high 63 degrees Fahrenheit, modeled conditions: DUSTY
  • Fri 10/9, no measurable rain, daily high 59 degrees Fahrenheit, modeled conditions: DUSTY
  • Sat 10/10, no measurable rain, daily high 50 degrees Fahrenheit, modeled conditions: DUSTY
  • Sun 10/11, no measurable rain, daily high 42 degrees Fahrenheit, modeled conditions: DUSTY
  • Mon 10/12, no measurable rain, daily high 35 degrees Fahrenheit, modeled conditions: DUSTY then DRY
  • Tue 10/13, no measurable rain, daily high 37 degrees Fahrenheit, modeled conditions: DRY
  • Wed 10/14, no measurable rain, daily high 51 degrees Fahrenheit, modeled conditions: DRY
  • Thu 10/15, no measurable rain, daily high 53 degrees Fahrenheit, modeled conditions: DRY
  • Fri 10/16, no measurable rain, daily high 55 degrees Fahrenheit, modeled conditions: DRY
  • Today, Sat 10/17, no measurable rain, daily high 57 degrees Fahrenheit, modeled conditions: DRY
  • Sun 10/18, no measurable rain, daily high 55 degrees Fahrenheit, modeled conditions: DRY
  • Mon 10/19, no measurable rain, daily high 52 degrees Fahrenheit, modeled conditions: DRY
  • Tue 10/20, no measurable rain, daily high 46 degrees Fahrenheit, modeled conditions: DRY
  • Wed 10/21, 0.17 inches of rain, daily high 41 degrees Fahrenheit, modeled conditions: DRY, forecast preview, beyond the free window
  • Thu 10/22, no measurable rain, daily high 43 degrees Fahrenheit, modeled conditions: DRY, forecast preview, beyond the free window
Updated

Updated Saturday, October 17th, 2026 at 18:39 UTC. Verdict last changed: Saturday, October 17th. Official closures and current trail conditions take priority.

Modeled hourly. Closures and local conditions take priority.

Mammoth Bike Park offers lift and shuttle access. See the operator for bike park tickets and visitor information. Official trail information

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Is Mammoth Mountain rideable today?

Loam's modeled verdict is DRY. Check official access, operating hours, and closures before riding. No measurable rain in the past week.

CHANGED
Monday, October 12th at 10am
Rain moved in. Verdict dropped to DRY.
Over the tracked history, Mammoth Mountain has been rideable on 10 of the last 10 days (very dry and dusty on 4 of them). Loam also considers soil, slope, tree cover, and drying time.

Soil and terrain at Mammoth Mountain

Mammoth Mountain is a mountain bike trail network in California. Soil data at the sampled location is classified as loam. Open tree cover can allow more sun and wind exposure, helping drying. Terrain data indicates an elevation of about 9,331 ft, an average terrain slope of 15.6° and a predominant ESE-facing aspect. Terrain slope does not measure the trail tread or its drainage features. Loam models conditions across the network; individual trails and constructed surfaces can differ from these environmental inputs. Official closures and conditions on the ground take priority.

How we check ourselves

How these factors affect drying

SoilLoam

Loam combines drainage with water retention. Soil type alone does not establish how long this network takes to dry. Drying behavior is modeled from the soil classification, not measured directly on the trail.

CanopyOpen 18%

Open tree cover can allow more sunlight and wind to reach the ground. Terrain, weather and trail construction also affect drying.

TerrainSteep

Steeper terrain can encourage runoff. Terrain slope does not measure the trail tread or its drainage features.

FAQ

Can you ride Mammoth Mountain right now?

The current estimate for Mammoth Mountain is DRY: rideable. Rideable now. No significant rain in the forecast. No measurable rain in the past week.

Is Mammoth Mountain muddy right now?

Loam currently estimates dry conditions (DRY). No measurable rain in the past week.

What is the soil and trail surface like at Mammoth Mountain?

The soil data at the sampled location is classified as loam. This describes an environmental input, not a survey of every trail surface.

How long does Mammoth Mountain take to dry after rain?

Mammoth Mountain has no fixed drying time. Rainfall, soil moisture, shade and the weather that follows all matter. Check the current estimate and wait until the trail surface is firm.

Can you ride Mammoth Mountain after rain?

Drying time depends on how much rain fell and the weather that follows. Wait until the surface is firm. Check the current estimate before heading out, and turn back if your tires leave ruts.

What does a frozen condition mean at Mammoth Mountain?

FROZEN means Loam estimates snow cover or frozen ground. It does not establish that riding is allowed or that every trail is frozen. Check posted winter access rules and watch for soft ground as temperatures rise.

What's the terrain and elevation like at Mammoth Mountain?

Terrain data indicates an elevation of about 9,331 ft, an average terrain slope of 15.6° and a predominant ESE-facing aspect. Terrain slope does not measure the trail tread or its drainage features.

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Network profile

Network profile

Soil
Loamdrainage input · modeled
Terrain
Steepterrain slope
Tree cover
18%Open
Elevation
9,331 ft
Average grade
15.6°
Predominant aspect
ESE-facing

Around Mammoth Mountain

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