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Cowiche Canyon

Mountain bike trail conditions · Seattle & Snoqualmie, WA 46.621° N  120.627° W   1,326 FT Verified

PRIME: Rideable now

No significant rain in the forecast.

Recent rain
0.1″ of rain, 1d ago
Today
70°Fpartly cloudy

Updated Sep 5, 2026, 13:33 UTC. Modeled hourly. Verdict last changed: Sep 5. Official closures and current trail conditions take priority.

Last 10 daysoldest to newest

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Trail outlook

Is Cowiche Canyon rideable today?

Yes. The live verdict is PRIME, rideable now. 0.1″ of rain, 1d ago.

0.1″
FORECAST
PRIME 7d 2026-08-29: 0.00 inches of rain, representative trail outlook PRIME
PRIME 6d 2026-08-30: 0.00 inches of rain, representative trail outlook PRIME
PRIME 5d 2026-08-31: 0.00 inches of rain, representative trail outlook PRIME
PRIME 4d 2026-09-01: 0.00 inches of rain, representative trail outlook PRIME
PRIME 3d 2026-09-02: 0.00 inches of rain, representative trail outlook PRIME
DUSTY 2d 2026-09-03: 0.10 inches of rain, representative trail outlook DUSTY
DUSTY 1d 2026-09-04: 0.00 inches of rain, representative trail outlook DUSTY
70° PRIME Today 2026-09-05: 0.00 inches of rain, Partly cloudy, representative trail outlook PRIME
69° PRIME SUN 2026-09-06: 0.00 inches of forecast rain, Overcast, representative trail outlook PRIME
82° PRIME MON 2026-09-07: 0.00 inches of forecast rain, Partly cloudy, representative trail outlook PRIME
78° PRIME TUE 2026-09-08: 0.00 inches of forecast rain, Cloudy, representative trail outlook PRIME
87° PRIME WED 2026-09-09: 0.00 inches of forecast rain, Clear, representative trail outlook PRIME
Modeled rain Forecast rain Above soft threshold (0.5″)
Over the tracked history, Cowiche Canyon has been rideable on 10 of the last 10 days (very dry and dusty on 2 of them). Each daily marker shows the expected daytime condition. Loam also considers soil, slope, tree cover, and drying time.

Soil and terrain at Cowiche Canyon

Cowiche Canyon is a mountain bike trail network in Seattle & Snoqualmie, WA. The soil is loam and drains well. The terrain averages a 0.5° slope at 1,326 ft and mainly faces NNE. Its nearly flat slopes can hold water in flat stretches.

How these factors affect drying

SoilLoam

Loam balances drainage with water retention, so it typically takes a day or two to dry after meaningful rain.

CanopyPartial 40%

A mix of sun and shade. Conditions vary across the network, with open sections drying faster than covered ones.

TerrainHolds water

Water tends to pool and linger here rather than running off, so the surface can stay damp well after the weather clears.

FAQ

Can you ride Cowiche Canyon right now?

The current estimate for Cowiche Canyon is PRIME: rideable now. No significant rain in the forecast. 0.1″ of rain, 1d ago.

Is Cowiche Canyon muddy right now?

Loam currently estimates dry conditions (PRIME). 0.1″ of rain, 1d ago.

What is the soil and trail surface like at Cowiche Canyon?

Cowiche Canyon sits on loam soil that drains well. Loam balances drainage with water retention, so it typically takes a day or two to dry after meaningful rain.

How long does Cowiche Canyon take to dry after rain?

Cowiche Canyon usually needs about a day or two to dry after meaningful rain. Its terrain holds water in low spots, which slows it.

Can you ride Cowiche Canyon 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.

Does Cowiche Canyon get snow in winter?

Yes. At 1,326 ft, Cowiche Canyon typically sees winter snow and freeze-thaw that can pause riding. Loam flags a FROZEN state when the ground is snow-covered or frozen, then clears it as things thaw and dry.

What's the terrain and elevation like at Cowiche Canyon?

Cowiche Canyon sits at roughly 1,326 feet, faces mostly NNE, and averages a 0.5° grade with about 40% tree cover. It is slower to dry where it faces north, and the nearly flat terrain holds puddles in the flats.

When is the best time of year to ride Cowiche Canyon?

Snow can limit riding at Cowiche Canyon in winter, at around 1,326 feet. Spring snowmelt and fall freezes can also affect conditions. Its shady aspect means it needs longer after storms than sunnier networks nearby. Check the current conditions before planning a ride.

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Network profile

Network profile

Soil
Loamdrains well
Drainage
Holds waterdries slowly
Tree cover
40%Partial
Elevation
1,326 ft
Average grade
0.5°
Predominant aspect
NNE-facing

Around Cowiche Canyon