# Potosi Warm Springs, Montana

Potosi Warm Springs in Montana. 124°F (51°C). Short Walk. Madison County.

- Page: https://www.soakingsprings.com/hot-springs/montana/potosi-warm-springs
- Source: Soaking Springs, researched and maintained by Armen Suny
- Updated: 2026-09-14

## Can you soak at Potosi Warm Springs?

Only once it cools. The water leaves the ground at 124°F, hotter than any hot tub. It's a short walk from the road. We haven't confirmed whether it has a pool or charges a fee.

## Key facts

| Fact | Value |
|---|---|
| Source water temperature | 124°F (51°C) (USGS record; developed pools are often cooled) |
| pH | 8.3 (Slightly Alkaline) |
| Elevation | 6,043 ft |
| Access | Short Walk, 363 ft from the nearest road (Willow Meadow Road) |
| County | Madison County |
| Nearest town | Virginia City |
| Coordinates | 45.60200, -111.90000 |
| Best months to soak | December, January, February (largest gap between water and average air temperature) |
| Nearest campground | Red Mountain (MT), 16.0 mi |

## About Potosi Warm Springs

Despite the name, Potosi Warm Springs reads hot on the record, hotter than most people want to sit in. It is in Madison County, Montana, twenty-one miles from Virginia City and a short way off Willow Meadow Road. A 1977 USGS sample found alkaline water with iron. No owner is listed, and access is not on file.

High country by road standards, with a wet climate and heavy snow. Getting to the spring means a short walk from Willow Meadow Road, a bit over a hundred yards. Nothing on record says who holds the land, and no land unit or designation appears.

The temperature on file is hot enough to burn with prolonged contact, so ease in. Red Mountain campground is around sixteen miles away. The listed months are December through February. The snowfall is substantial. Access is not confirmed, and the reading is nearly fifty years old. Nobody has recorded a fee or a bathhouse.

## Water chemistry

Lab sample from 1977-01-15 (Water Quality Portal).

| Measure | Value |
|---|---|
| pH | 8.3 |
| Calcium | 10 mg/L |
| Magnesium | 0.2 mg/L |
| Sodium | 88 mg/L |
| Sulfate | 98 mg/L |
| Chloride | 4.5 mg/L |
| Iron | 60 µg/L |

## Nearby

- Nearest city page: [Hot springs near Virginia City](https://www.soakingsprings.com/hot-springs/near/montana/virginia-city), 62 mi away
- State page: [Hot springs in Montana](https://www.soakingsprings.com/hot-springs/montana)
- [Potosi Hot Springs, MT](https://www.soakingsprings.com/hot-springs/montana/potosi-hot-springs): 122°F source, pH 8.3, Roadside, near Virginia City, Madison County
- [Norris Hot Springs, MT](https://www.soakingsprings.com/hot-springs/montana/norris-hot-springs): 127°F source, pH 7.8, Roadside, near Three Forks, Gallatin County
- [Renova Hot Springs, MT](https://www.soakingsprings.com/hot-springs/montana/renova-hot-springs): 122°F source, pH 7.5, Roadside, near Whitehall, Jefferson County
- [Ennis Hot Springs, MT](https://www.soakingsprings.com/hot-springs/montana/ennis-hot-springs): 181°F source, pH 7.7, Roadside, near Virginia City, Madison County
- [Silver Star Hot Springs, MT](https://www.soakingsprings.com/hot-springs/montana/silver-star-hot-springs): 163°F source, pH 7.6, Short Walk, near Whitehall, Jefferson County
- [Pipestone Hot Springs, MT](https://www.soakingsprings.com/hot-springs/montana/pipestone-hot-springs): 135°F source, pH 8.1, Roadside, near Whitehall, Jefferson County

## Questions

**What is the water temperature at Potosi Warm Springs?**
Potosi Warm Springs has a water temperature of 124°F (51°C). This is considered a hot spring, well above body temperature.

**Where is Potosi Warm Springs located?**
Potosi Warm Springs is located in Madison County, Montana at 6,043 feet elevation, near Virginia City. Coordinates: 45.6020°N, 111.9000°W.

**How do I get to Potosi Warm Springs?**
Potosi Warm Springs has Short Walk road access, with the nearest road being Willow Meadow Road (363 ft from the road).

**Can I camp near Potosi Warm Springs?**
Yes, Red Mountain (Mt) is located nearby (16.0 miles away).

**What minerals are in the water at Potosi Warm Springs?**
Water chemistry analysis shows the presence of pH, Calcium, Magnesium, Sodium, Sulfate, Chloride, Iron. The pH is 8.3 (slightly alkaline).

**Is it safe to soak at Potosi Warm Springs?**
With care. At 124°F Potosi Warm Springs is hot enough to need short sessions, fifteen to twenty minutes, and plenty of water. Enter slowly and get out if you feel light-headed.

## Sources

- USGS thermal springs records, Water Quality Portal lab analyses, OpenStreetMap, Wikipedia/Wikidata, NOAA climate normals