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West Fork Upper Pahsimeroi Trailhead

Mackay, Idaho · Custer County · Facility

This trailhead has minimal development, providing access to Merriam and Pass Lake Trails. One metal firering, a picnic table and a two-sided latrine are on site.

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44.12992, -113.72630
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5-Day Forecast

Weather at West Fork Upper Pahsimeroi Trailhead

Live forecast for the park. Plan your visit accordingly.

Avg High77°F
Avg Low58°F
Peak Rain Chance21%
Humidity46%
UV (avg)8
Air Quality46 · Good
Today
🌧
Rain
67°/56°
💧 21%🌬 9mph
6:12 AM9:10 PM
Thu
☁️
Overcast
76°/53°
💧 3%🌬 13mph
6:13 AM9:09 PM
Fri
☁️
Overcast
82°/57°
💧 6%🌬 20mph
6:14 AM9:08 PM
Sat
☁️
Overcast
81°/62°
💧 9%🌬 20mph
6:15 AM9:07 PM
Sun
☁️
Overcast
80°/63°
💧 2%🌬 14mph
6:16 AM9:06 PM

Forecast data © Open-Meteo. Refreshed every 6 hours. Always check the most recent forecast before heading out.

About West Fork Upper Pahsimeroi Trailhead

This trailhead has minimal development, providing access to Merriam and Pass Lake Trails. One metal firering, a picnic table and a two-sided latrine are on site.

Plan Your Visit to West Fork Upper Pahsimeroi Trailhead

Heading to West Fork Upper Pahsimeroi Trailhead? A few things to know before you go:

  • Reservations: popular sites fill up fast — check Recreation.gov 6 months in advance
  • Fees: day-use and camping fees vary; check current rates on the official park page
  • Trash & pack-out: follow Leave No Trace principles
  • Wildlife: store food in bear boxes where provided; never feed wildlife
  • Weather: the 5-day forecast above is updated every 6 hours; verify just before you go

Frequently Asked Questions

Do I need a reservation for West Fork Upper Pahsimeroi Trailhead?

No central reservation system listed for West Fork Upper Pahsimeroi Trailhead. Check the official page (https://www.recreation.gov/camping/campgrounds/239983) for the latest entry policy and availability.