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Harmon Lake

Mountain bike trail conditions · North Dakota 46.932° N  100.961° W   1,732 FT Verified

DRY: Rideable

Friday, October 23rd Conditions turn Caution.

Recent rain
0.1″ of rain, 5d ago
Today
78°Fpartly cloudy
  • Wed 10/7, no measurable rain, daily high 71 degrees Fahrenheit, modeled conditions: DRY
  • Thu 10/8, no measurable rain, daily high 69 degrees Fahrenheit, modeled conditions: DRY
  • Fri 10/9, no measurable rain, daily high 76 degrees Fahrenheit, modeled conditions: DRY
  • Sat 10/10, no measurable rain, daily high 80 degrees Fahrenheit, modeled conditions: DRY
  • Sun 10/11, no measurable rain, daily high 51 degrees Fahrenheit, modeled conditions: DRY
  • Mon 10/12, 0.15 inches of rain, daily high 44 degrees Fahrenheit, modeled conditions: DRY then CAUTION then DRY
  • Tue 10/13, no measurable rain, daily high 45 degrees Fahrenheit, modeled conditions: DRY
  • Wed 10/14, no measurable rain, daily high 56 degrees Fahrenheit, modeled conditions: DRY
  • Thu 10/15, 0.09 inches of rain, daily high 47 degrees Fahrenheit, modeled conditions: DRY
  • Fri 10/16, no measurable rain, daily high 54 degrees Fahrenheit, modeled conditions: DRY
  • Today, Sat 10/17, no measurable rain, daily high 78 degrees Fahrenheit, modeled conditions: DRY
  • Sun 10/18, no measurable rain, daily high 64 degrees Fahrenheit, modeled conditions: DRY
  • Mon 10/19, no measurable rain, daily high 65 degrees Fahrenheit, modeled conditions: DRY
  • Tue 10/20, no measurable rain, daily high 72 degrees Fahrenheit, modeled conditions: DRY
  • Wed 10/21, no measurable rain, daily high 71 degrees Fahrenheit, modeled conditions: DRY, forecast preview, beyond the free window
  • Thu 10/22, no measurable rain, daily high 76 degrees Fahrenheit, modeled conditions: DRY, forecast preview, beyond the free window
Updated

Updated Saturday, October 17th, 2026 at 18:07 UTC. Verdict last changed: Saturday, October 17th. Official closures and current trail conditions take priority.

Modeled hourly. Closures and local conditions take priority.

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Is Harmon Lake rideable today?

Yes. The live verdict is DRY, rideable now. 0.1″ of rain, 5d ago.

CHANGED
Monday, October 12th at 7am
Dried back to DRY.
Monday, October 12th at 4am
Rain moved in. Verdict dropped to CAUTION.
Over the tracked history, Harmon Lake has been rideable on 10 of the last 10 days. Loam also considers soil, slope, tree cover, and drying time.

Soil and terrain at Harmon Lake

Harmon Lake is a mountain bike trail network in North Dakota. Soil data at the sampled location is classified as loam. Open tree cover can allow more sun and wind exposure, helping drying. Terrain data indicates an elevation of about 1,732 ft, an average terrain slope of 1.6° and a predominant NNW-facing aspect. Terrain slope does not measure the trail tread or its drainage features. Loam models conditions across the network; individual trails and constructed surfaces can differ from these environmental inputs. Official closures and conditions on the ground take priority.

How we check ourselves

How these factors affect drying

SoilLoam

Loam combines drainage with water retention. Soil type alone does not establish how long this network takes to dry. The model uses surveyed water-retention values, not measured trail recovery times.

CanopyOpen 19%

Open tree cover can allow more sunlight and wind to reach the ground. Terrain, weather and trail construction also affect drying.

TerrainGentle

Gentle terrain can allow water to linger, but slope alone does not establish whether water pools on a trail.

FAQ

Can you ride Harmon Lake right now?

The current estimate for Harmon Lake is DRY: rideable. Rideable now. No significant rain in the forecast. 0.1″ of rain, 5d ago.

Is Harmon Lake muddy right now?

Loam currently estimates dry conditions (DRY). 0.1″ of rain, 5d ago.

What is the soil and trail surface like at Harmon Lake?

The soil data at the sampled location is classified as loam. This describes an environmental input, not a survey of every trail surface.

How long does Harmon Lake take to dry after rain?

Harmon Lake has no fixed drying time. Rainfall, soil moisture, shade and the weather that follows all matter. Check the current estimate and wait until the trail surface is firm.

Can you ride Harmon Lake 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.

What does a frozen condition mean at Harmon Lake?

FROZEN means Loam estimates snow cover or frozen ground. It does not establish that riding is allowed or that every trail is frozen. Check posted winter access rules and watch for soft ground as temperatures rise.

What's the terrain and elevation like at Harmon Lake?

Terrain data indicates an elevation of about 1,732 ft, an average terrain slope of 1.6° and a predominant NNW-facing aspect. Terrain slope does not measure the trail tread or its drainage features.

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Network profile

Network profile

Soil
Loamdrainage input
Terrain
Gentleterrain slope
Tree cover
19%Open
Elevation
1,732 ft
Average grade
1.6°
Predominant aspect
NNW-facing

Around Harmon Lake

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