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Harold Parker State Forest

Mountain bike trail conditions · Greater Boston, MA 42.612° N  71.073° W   164 FT Verified

PRIME: Rideable now

No significant rain in the forecast.

Recent rain
0.1″ of rain, 3d ago
Today
82°Fcloudy
Last 10 daysoldest to newest

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

Is Harold Parker State Forest rideable today?

Yes. The live verdict is PRIME, rideable now. 0.1″ of rain, 3d ago.

Trail outlook

0.1″
FORECAST
PRIME 7d 2026-08-19: 0.00 inches of rain, representative trail outlook PRIME
PRIME 6d 2026-08-20: 0.00 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: 0.10 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
82° PRIME Today 2026-08-26: 0.00 inches of rain, Cloudy, representative trail outlook PRIME
85° PRIME THU 2026-08-27: 0.00 inches of forecast rain, Cloudy, representative trail outlook PRIME
87° PRIME FRI 2026-08-28: 0.00 inches of forecast rain, Overcast, representative trail outlook PRIME
82° PRIME SAT 2026-08-29: 0.00 inches of forecast rain, Cloudy, representative trail outlook PRIME
89° 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, Harold Parker State Forest 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 Harold Parker State Forest dries this way

Harold Parker State Forest (Greater Boston, MA) rides on sandy soil that drains fast 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. The terrain here is nearly flat (a 0.4° average grade at 164 ft) and lets water sit, so the flat stretches are the last to firm up, while the SE-facing aspect soaks up sun through the middle of the day, which speeds drying and opens the season earlier.

Network profile

Soil
Sandydrains fast
Drainage
Holds waterdries slowly
Tree cover
90%Dense
Elevation
164 ft
Average grade
0.4°
Predominant aspect
SE-facing
How these factors affect drying

SoilSandy

Sandy, coarse soil sheds water fast. These trails are among the quickest to recover after rain.

CanopyDense 90%

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 Harold Parker State Forest

FAQ

Can you ride Harold Parker State Forest right now?

As of the latest update, Harold Parker State Forest is Rideable now (PRIME). No significant rain in the forecast. 0.1″ of rain, 3d ago.

Is Harold Parker State Forest muddy right now?

No. The current verdict is PRIME, which means the model reads the surface as dry. Its sandy soil sheds water quickly, so mud rarely lingers here. 0.1″ of rain, 3d ago.

What is the soil and trail surface like at Harold Parker State Forest?

Harold Parker State Forest sits on sandy soil that drains fast. Sandy, coarse soil sheds water fast. These trails are among the quickest to recover after rain.

How long does Harold Parker State Forest take to dry after rain?

Harold Parker State Forest usually needs only a few hours to recover after light rain. Its terrain holds water in low spots, which slows it. Heavy tree cover slows drying further.

Can you ride Harold Parker State Forest after rain?

Usually yes, often within hours of light rain, since sandy ground drains fast. 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 Harold Parker State Forest get snow in winter?

Rarely. Harold Parker State Forest sits low and mild enough (around 164 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 Harold Parker State Forest?

Harold Parker State Forest sits at roughly 164 feet, faces mostly SE, and averages a 0.4° grade with about 90% tree cover. That makes it a sunny, fast-drying network, 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 Harold Parker State Forest?

There is no real off-season at Harold Parker State Forest: snow rarely interferes, so good days come down to rain and how fast the dirt dries. Its sunny aspect helps it come back fast after storms. The live verdict above reflects today.

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