Longmire Mineral Springs Look only
Longmire Mineral Springs reads 77°F at the source (NCEI, historical reading). Managed by Mount Rainier National Park (checked 2026-08-19).
77°F / 25°C
Warm range at the source — bath-warm
Reading from the NCEI Thermal Springs List (historical reading, 1981 compilation). Source temperature — lower pools usually run cooler.
Water temperatures change with flow and season — test before entering, and never submerge your head in warm natural water. CDC guidance on Naegleria fowleri.
- Coordinates 46.752° N, 121.814° W · USGS National Map
- Land manager Mount Rainier National Park — checked 2026-08-19
The rule here
This is a thermal feature to see, not a place to get in the water. Mount Rainier National Park puts it this way:
“Along the trail view bubbling mineral springs and learn about the Longmire family and early park settlers.”
— Mount Rainier National Park, checked 2026-08-19
Worth knowing: Mount Rainier National Park presents the Longmire mineral springs as a feature viewed from the Trail of the Shadows loop; nothing in the park’s material describes soaking.
Nearby springs
-
Mt Rainier Fumaroles
7 miles away · Washington · 162°F at the source
Look only
-
Ohanapecosh Hot Springs
12 miles away · Washington · 122°F at the source
Look only
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Mt St Helens Fumaroles
42 miles away · Washington · 190°F at the source
Look only
Identity, coordinates, and temperature quoted from the NCEI Thermal Springs List (historical reading, 1981 compilation).