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Mercer County Park

Mountain bike trail conditions · Central New Jersey, NJ 40.269° N  74.644° W   62 FT Verified

PRIME: Rideable now

No significant rain in the forecast.

Recent rain
No measurable rain in the past week
Today
81°Flight rain

Updated Sep 13, 2026, 05:52 UTC. Modeled hourly. Unchanged for 10+ days. Official closures and current trail conditions take priority.

Last 10 daysoldest to newest

Watch conditions at Mercer County Park

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Trail outlook

Is Mercer County Park rideable today?

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

0.1″
0.2″
FORECAST
PRIME 7d 2026-09-06: 0.00 inches of rain, representative trail outlook PRIME
PRIME 6d 2026-09-07: 0.00 inches of rain, representative trail outlook PRIME
PRIME 5d 2026-09-08: 0.00 inches of rain, representative trail outlook PRIME
PRIME 4d 2026-09-09: 0.00 inches of rain, representative trail outlook PRIME
PRIME 3d 2026-09-10: 0.00 inches of rain, representative trail outlook PRIME
PRIME 2d 2026-09-11: 0.00 inches of rain, representative trail outlook PRIME
PRIME 1d 2026-09-12: 0.00 inches of rain, representative trail outlook PRIME
81° PRIME Today 2026-09-13: 0.10 inches of rain, Light rain, representative trail outlook PRIME
72° PRIME MON 2026-09-14: 0.00 inches of forecast rain, Partly cloudy, representative trail outlook PRIME
77° PRIME TUE 2026-09-15: 0.00 inches of forecast rain, Partly cloudy, representative trail outlook PRIME
83° PRIME WED 2026-09-16: 0.00 inches of forecast rain, Cloudy, representative trail outlook PRIME
84° PRIME THU 2026-09-17: 0.20 inches of forecast rain, Light rain, representative trail outlook PRIME
Modeled rain Forecast rain Above soft threshold (0.5″)
Over the tracked history, Mercer County Park has been rideable on 10 of the last 10 days. Each daily marker shows the expected daytime condition. Loam also considers soil, slope, tree cover, and drying time.

Soil and terrain at Mercer County Park

Mercer County Park is a mountain bike trail network in Central New Jersey, NJ. The soil is not surveyed and middle estimate. Heavy tree cover can slow drying after rain. The terrain averages a 0.1° slope at 62 ft and mainly faces NNW. Its nearly flat slopes can hold water in flat stretches.

How these factors affect drying

SoilNot surveyed

Soil survey data does not reach this spot, so the drying model assumes middle-of-the-road ground rather than guessing at a soil type. Everything else in this forecast is measured, but expect the drying estimate here to be less precise than at networks with surveyed soil.

CanopyDense 76%

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.

FAQ

Can you ride Mercer County Park right now?

The current estimate for Mercer County Park is PRIME: rideable now. No significant rain in the forecast. No measurable rain in the past week.

Is Mercer County Park muddy right now?

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

What is the soil and trail surface like at Mercer County Park?

Mercer County Park sits on not surveyed soil that middle estimate. Soil survey data does not reach this spot, so the drying model assumes middle-of-the-road ground rather than guessing at a soil type. Everything else in this forecast is measured, but expect the drying estimate here to be less precise than at networks with surveyed soil.

How long does Mercer County Park take to dry after rain?

Mercer County 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 Mercer County Park 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 Mercer County Park get snow in winter?

Rarely. Mercer County Park sits low and mild enough (around 62 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 Mercer County Park?

Mercer County Park sits at roughly 62 feet, faces mostly NNW, and averages a 0.1° grade with about 76% 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 Mercer County Park?

Snow rarely affects Mercer County Park. Check recent rain and allow time for the ground to dry. Its shady aspect means it needs longer after storms than sunnier networks nearby. The live verdict above reflects today.

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Network profile

Network profile

Soil
Not surveyedmiddle estimate · modeled
Drainage
Holds waterdries slowly
Tree cover
76%Dense
Elevation
62 ft
Average grade
0.1°
Predominant aspect
NNW-facing

Around Mercer County Park