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FacilityCampgroundRecreation.gov

Williams Lake Campground

Ellis, Idaho · Lemhi County · Campground

4500-foot elevation. Picnic area on Williams Lake, with the trailhead to 2 walk-in or boat-in campsites. The picic area and fishing area are both fully accessible. Five tables with connecting walkways overlook scenic vistas of the lake and surrounding mountains. Fishing for rainbow trout in the lake, and fantastic fly …

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45.01903, -113.98904
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5-Day Forecast

Weather at Williams Lake Campground

Live forecast for the park. Plan your visit accordingly.

Avg High91°F
Avg Low62°F
Peak Rain Chance1%
Humidity18%
UV (avg)8
Air Quality54 · Moderate
Today
☁️
Overcast
91°/66°
🌬 16mph
6:15 AM9:09 PM
Mon
☀️
Clear
91°/65°
🌬 17mph
6:16 AM9:08 PM
Tue
☀️
Clear
90°/58°
🌬 15mph
6:17 AM9:07 PM
Wed
☁️
Overcast
91°/59°
💧 1%🌬 17mph
6:18 AM9:06 PM
Thu
☁️
Overcast
90°/61°
💧 1%🌬 14mph
6:19 AM9:05 PM

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

About Williams Lake Campground

4500-foot elevation. Picnic area on Williams Lake, with the trailhead to 2 walk-in or boat-in campsites. The picic area and fishing area are both fully accessible. Five tables with connecting walkways overlook scenic vistas of the lake and surrounding mountains. Fishing for rainbow trout in the lake, and fantastic fly fishing in the inlet. Trailhead for Thunder Mountain National Historic Trail at the end of FR 028. Ice fishing in the winter. Full-service resort on south shore of the lake includes a tackle shop and restaurant.

What to Pack for Your Stay

Tuned to the live forecast for this park.

👔 What to Wear

  • 👕
    UPF sun shirt (long sleeve)
    Cooler than direct sun on bare skin.
  • 🩳
    Light shorts/skirt
    Loose-fit, breathable.
  • 🧢
    Wide-brimmed sun hat
    Plus a buff/bandana you can wet for cooling.
  • 🕶
    Polarized sunglasses
    Critical for glare from sun + sand/water.

🎒 What to Pack

  • 💧
    Water
    Bring at least 1L of water; more in heat.
  • 🍫
    High-energy snacks
    A snack for the trail.
  • 🧴
    Sun protection (UV 8)
    SPF 50+ sunscreen, lip balm w/ SPF, sunglasses, sun hat.
  • 🩹
    First-aid kit
    Blister patches, ibuprofen, tape, antiseptic wipes.
  • 🗺
    Offline map
    Download your route in advance via Gaia, Caltopo, or OSM-based apps.

Recommendations adapt to the current forecast + trail stats. Use them as a starting point — local conditions, your experience, and the time of day you start all matter.

Plan Your Visit to Williams Lake Campground

Heading to Williams Lake Campground? 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 Williams Lake Campground?

No central reservation system listed for Williams Lake Campground. Check the official page (https://www.recreation.gov/camping/campgrounds/239933) for the latest entry policy and availability.

How do I get to Williams Lake Campground?

From Salmon, go 15 miles south on US 93 and Forest Road 028. Go past the Williams Lake Resort to north side of the lake.