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Allamuchy Mountain State Park

Mountain bike trail conditions · Central New Jersey, NJ 40.925° N  74.797° W   1,148 FT Verified

PRIME: Rideable now

Rain returns in ~1 day.

Recent rain
0.3″ of rain, 3d ago
Next rain
~1d
Today
75°Fpartly cloudy
Last 10 daysoldest to newest

Updated Aug 26, 2026, 19:04 UTC. Modeled hourly. Official closures and current trail conditions take priority.

Is Allamuchy Mountain State Park rideable today?

Yes. The live verdict is PRIME, rideable now. 0.3″ of rain, 3d ago.

Trail outlook

1.6″
0.3″
0.4″
0.1″
FORECAST
PRIME 7d 2026-08-19: 0.00 inches of rain, representative trail outlook PRIME
PRIME 6d 2026-08-20: 1.60 inches of rain, representative trail outlook PRIME
PRIME 5d 2026-08-21: 0.00 inches of rain, representative trail outlook PRIME
PRIME 4d 2026-08-22: 0.00 inches of rain, representative trail outlook PRIME
PRIME 3d 2026-08-23: 0.30 inches of rain, representative trail outlook PRIME
PRIME 2d 2026-08-24: 0.00 inches of rain, representative trail outlook PRIME
PRIME 1d 2026-08-25: 0.00 inches of rain, representative trail outlook PRIME
75° PRIME Today 2026-08-26: 0.00 inches of rain, Partly cloudy, representative trail outlook PRIME
79° PRIME THU 2026-08-27: 0.40 inches of forecast rain, Rain, representative trail outlook PRIME
82° PRIME FRI 2026-08-28: 0.10 inches of forecast rain, Light rain, representative trail outlook PRIME
79° PRIME SAT 2026-08-29: 0.00 inches of forecast rain, Cloudy, representative trail outlook PRIME
83° PRIME SUN 2026-08-30: 0.00 inches of forecast rain, Overcast, representative trail outlook PRIME
Measured rain Forecast rain Above soft threshold (0.5″)
Over the tracked history, Allamuchy Mountain State Park has been rideable on 10 of the last 10 days. Daily trail markers are representative daytime outlooks. Weather is one input. The rideability verdict also accounts for soil, terrain, canopy, and drying time.

Why Allamuchy Mountain State Park dries this way

Allamuchy Mountain State Park (Central New Jersey, NJ) rides on loam soil that drains well over terrain that holds water and dries slowly. Heavy tree cover holds the damp in, so it stays wet longer than the sky overhead would suggest. 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. At 1,148 ft, Allamuchy Mountain State Park rides ENE-facing ground that catches morning sun, so the surface firms up earlier in the day; the nearly flat grade, around 1.8° on average, lets water sit, so the flat stretches are the last to firm up.

Network profile

Soil
Loamdrains well
Drainage
Holds waterdries slowly
Tree cover
87%Dense
Elevation
1,148 ft
Average grade
1.8°
Predominant aspect
ENE-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.

CanopyDense 87%

Heavy tree cover shades the soil and blocks wind, so these trails dry slowly and can hold morning damp even after dry days.

TerrainHolds water

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

Around Allamuchy Mountain State Park

FAQ

Can you ride Allamuchy Mountain State Park right now?

As of the latest update, Allamuchy Mountain State Park is Rideable now (PRIME). Rain returns in ~1 day. 0.3″ of rain, 3d ago.

Is Allamuchy Mountain State Park muddy right now?

No. The current verdict is PRIME, which means the model reads the surface as dry. 0.3″ of rain, 3d ago.

What is the soil and trail surface like at Allamuchy Mountain State Park?

Allamuchy Mountain State Park 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 Allamuchy Mountain State Park take to dry after rain?

Allamuchy Mountain State Park usually needs about a day or two to dry after meaningful rain. Its terrain holds water in low spots, which slows it. Heavy tree cover slows drying further.

Can you ride Allamuchy Mountain State Park 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 Allamuchy Mountain State Park get snow in winter?

Rarely. Allamuchy Mountain State Park sits low and mild enough (around 1,148 ft) that snow seldom affects riding; conditions are driven by rain and drying. Loam still flags FROZEN on the rare freeze.

What's the terrain and elevation like at Allamuchy Mountain State Park?

Allamuchy Mountain State Park sits at roughly 1,148 feet, faces mostly ENE, and averages a 1.8° grade with about 87% tree cover. That makes it a morning-sun network that firms up early in the day, and the nearly flat grade means it holds puddles in the flats. Loam models this exact ground against live weather rather than using one regional forecast.

When is the best time of year to ride Allamuchy Mountain State Park?

There is no real off-season at Allamuchy Mountain State Park: snow rarely interferes, so good days come down to rain and how fast the dirt dries. The live verdict above reflects today.

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