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Sun Mountain

Mountain bike trail conditions · Washington 48.466° N  120.270° W   2,740 FT Verified

PRIME: Rideable now

No significant rain in the forecast.

Recent rain
No measurable rain in the past week
Today
87°Fcloudy
Last 10 daysoldest to newest

Updated Aug 26, 2026, 19:03 UTC. Modeled hourly. Official closures and current trail conditions take priority.

Is Sun Mountain rideable today?

Yes. The live verdict is PRIME, rideable now. No measurable rain in the past week.

Trail outlook

0.2″
FORECAST
DUSTY 7d 2026-08-19: 0.00 inches of rain, representative trail outlook DUSTY
DUSTY 6d 2026-08-20: 0.00 inches of rain, representative trail outlook DUSTY
DUSTY 5d 2026-08-21: 0.00 inches of rain, representative trail outlook DUSTY
DUSTY 4d 2026-08-22: 0.00 inches of rain, representative trail outlook DUSTY
PRIME 3d 2026-08-23: 0.00 inches of rain, representative trail outlook PRIME
DUSTY 2d 2026-08-24: 0.00 inches of rain, representative trail outlook DUSTY
DUSTY 1d 2026-08-25: 0.00 inches of rain, representative trail outlook DUSTY
87° PRIME Today 2026-08-26: 0.00 inches of rain, Cloudy, representative trail outlook PRIME
79° PRIME THU 2026-08-27: 0.00 inches of forecast rain, Cloudy, representative trail outlook PRIME
78° PRIME FRI 2026-08-28: 0.00 inches of forecast rain, Cloudy, representative trail outlook PRIME
57° PRIME SAT 2026-08-29: 0.20 inches of forecast rain, Light rain, representative trail outlook PRIME
68° PRIME SUN 2026-08-30: 0.00 inches of forecast rain, Cloudy, representative trail outlook PRIME
Measured rain Forecast rain Above soft threshold (0.5″)
Over the tracked history, Sun Mountain has been rideable on 10 of the last 10 days (very dry and dusty on 7 of them). Daily trail markers are representative daytime outlooks. Weather is one input. The rideability verdict also accounts for soil, terrain, canopy, and drying time.

Why Sun Mountain dries this way

Sun Mountain (Washington) rides on loam soil that drains well over terrain that sheds water and dries quickly. Loam reads that exact ground against live weather, rather than leaning on a regional forecast that can’t tell you what the dirt is doing. The NE-facing aspect keeps the dirt shaded for much of the day, so moisture lingers after rain and snow is slow to clear, and the rolling terrain, about a 10.2° average grade at 2,740 ft, drains steadily rather than pooling.

Network profile

Soil
Loamdrains well
Drainage
Sheds waterdries quickly
Tree cover
47%Partial
Elevation
2,740 ft
Average grade
10.2°
Predominant aspect
NE-facing
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 47%

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

TerrainSheds water

Water runs off this terrain rather than pooling, which helps the surface dry out after rain.

Around Sun Mountain

FAQ

Can you ride Sun Mountain right now?

As of the latest update, Sun Mountain is Rideable now (PRIME). No significant rain in the forecast. No measurable rain in the past week.

Is Sun Mountain muddy right now?

No. The current verdict is PRIME, which means the model reads the surface as dry. No measurable rain in the past week.

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

Sun Mountain 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 Sun Mountain take to dry after rain?

Sun Mountain usually needs about a day or two to dry after meaningful rain. Its terrain sheds water, which speeds drying.

Can you ride Sun Mountain after rain?

Usually yes, once the surface has had time to firm up, typically a day or two after meaningful rain. Rather than counting days, check the live verdict above: it already accounts for how much rain actually fell here and how fast this exact ground, with its slope and tree cover, gives back a firm, dry surface.

Does Sun Mountain get snow in winter?

Yes. At 2,740 ft, Sun Mountain 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 Sun Mountain?

Sun Mountain sits at roughly 2,740 feet, faces mostly NE, and averages a 10.2° grade with about 47% tree cover. That makes it a shady network that holds moisture longer than sunnier neighbors, and the rolling grade means it drains at a steady clip. Loam models this exact ground against live weather rather than using one regional forecast.

When is the best time of year to ride Sun Mountain?

The reliable season at Sun Mountain runs late spring through fall: at around 2,740 feet it holds real winter snowpack, and freeze-thaw makes the shoulder seasons hit or miss. Its shady aspect means it needs longer after storms than sunnier networks nearby. Loam flags FROZEN days and posts a live verdict, so the calendar never has to be the tiebreaker.

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