Weir Creek Hot Springs
Weir Creek Hot Springs sits in Clearwater National Forest, with Superior the nearest town at under five miles. Public access is marked open. Source water is hot, above comfortable soaking straight from the ground, so cooling matters. OpenStreetMap tags it as Weir hotsprings, run together. Strongly alkaline water; the county on record is Mineral.
Forest Service ground, and the walk in from an unnamed road runs a little under half a mile. Elevation stays under three thousand feet, which does not stop snowfall averaging past two hundred inches, and it is wet here year round. Count on snow lying over the approach much of the year.
Winter months, December through February, are what the record recommends. Castle Butte Lookout, nine miles off, is the closest overnight option listed. The source can burn given time; test the pool before you settle. Access is open per the Forest Service. The temperature reading is from July 1982.
Aircraft with laser scanners measured this ground to within inches. The scan strips out trees and buildings, leaving the bare shape of the land around Weir Creek Hot Springs.
Drag the handle to compare the two views. The orange dot marks the spring, in a frame about three quarters of a mile wide.
- Setting
- Canyon floor
- Steep ground climbs away on both sides of the spring.
- Highest ground nearby
- 544 ft above the spring
- Within a quarter mile, to the southwest
A slice through the ground from southwest to northeast, about 0.6 miles end to end.
Elevation data: USGS 3D Elevation Program. Aerial imagery: USGS The National Map. Public domain.
That's about 1½ times the US average of 65. It's higher than at 23% of the springs on this site.
Heat flow measures the warmth working its way up through the ground from deep inside the earth. Where it runs high, rain and snowmelt that seep down through cracks in the rock come back up hot.
See every spring on the geothermal heat map →
Heat flow estimate: Stanford Thermal Earth Model (Aljubran & Horne, 2024), CC BY 4.0.
The water at Weir Creek Hot Springs is alkaline (pH 9.4).
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Overview Castle Butte Lookout is a unique cabin perched on a rocky point, 6,659 feet above sea level. It offers breathtaking, 360-degree views of the Selway-Bitterroot Wilderness, the Seven Devils Mountains, the Great Burn area and the deep canyons of the North Fork Clearwater River's upper drainages. A cabin was first constructed on this site in 1916 and was replaced in 1928 with a log cabin featuring a cupola. The current lookout was built in 1950. Access to the lookout is via the Lolo M...
Weir Creek Hot Springs is road-accessible, so you can bring more gear. The water runs hot, so extra hydration is key.
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