# Gregson Hot Springs, Montana

Gregson Hot Springs in Montana. 158°F (70°C). Roadside. Deer Lodge County.

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

## Can you soak at Gregson Hot Springs?

Not at the source. The water leaves the ground at 158°F, hot enough to burn skin. You can drive right up to it.

## Key facts

| Fact | Value |
|---|---|
| Source water temperature | 158°F (70°C) (USGS record; developed pools are often cooled) |
| pH | 8.5 (Slightly Alkaline) |
| Elevation | 5,137 ft |
| Access | Roadside, 22 ft from the nearest road |
| County | Deer Lodge County |
| Nearest town | Warm Springs |
| Coordinates | 46.04400, -112.81100 |
| Best months to soak | December, January, February (largest gap between water and average air temperature) |
| Nearest campground | HIGH RYE CABIN, 3.5 mi |

## Soaking safety

**Very Hot Source, Use Extreme Caution.** At 158°F, the source water at Gregson Hot Springs is hot enough to cause burns. Some hot springs this hot have cooler side pools or downstream areas suitable for soaking. Always test the water temperature before entering.

## About Gregson Hot Springs

Gregson Hot Springs, the name Wikipedia also gives as Fairmont Hot Springs, is a geothermal system where the water comes out scalding, well past anything you could sit in. The row puts it in Deer Lodge County, with the town of Warm Springs next door, though Wikipedia files it under Silver Bow County. It sits a few steps off the road. A USGS site is attached, sampled in the late seventies.

Roadside in every sense. The spring sits a few paces off a road, though which road goes unrecorded. This is valley floor by Montana standards. Snow piles up through the winter, close to six feet over a season, and total precipitation is moderate. High Rye Cabin is the closest camping on file, about three and a half miles away.

Wikipedia treats Gregson and Fairmont Hot Springs as the same system and places it in Silver Bow County. For years the mineral water was believed to ease rheumatism and arthritis, among other complaints. The USGS keeps a numbered monitoring site on it, with chemistry dating to August 1978.

The water is far too hot to touch at the source. Keep skin out of it. Winter is the listed season, which fits a hot spring, though the snow means checking roads. The 1978 USGS sample ran alkaline with iron present. Whoever owns the ground is not recorded, and no fee or access status is given, so assume nothing about walking up to it.

## Water chemistry

Lab sample from 1978-08-19 (Water Quality Portal).

| Measure | Value |
|---|---|
| pH | 8.5 |
| Calcium | 4 mg/L |
| Magnesium | 0.04 mg/L |
| Sodium | 180 mg/L |
| Sulfate | 190 mg/L |
| Chloride | 16 mg/L |
| Iron | 20 µg/L |

## Nearby

- Nearest city page: [Hot springs near Warm Springs](https://www.soakingsprings.com/hot-springs/near/montana/warm-springs), 0 mi away
- State page: [Hot springs in Montana](https://www.soakingsprings.com/hot-springs/montana)
- [Anaconda Hot Springs, MT](https://www.soakingsprings.com/hot-springs/montana/anaconda-hot-springs): 72°F source, TDS 360 mg/L, Short Walk, near Anaconda, Deer Lodge County
- [Warm Springs (State Hospital), MT](https://www.soakingsprings.com/hot-springs/montana/warm-springs-state-hospital): 172°F source, pH 7.0, Roadside, near Warm Springs, Deer Lodge County
- [Deerlodge Prison Ranch Springs, MT](https://www.soakingsprings.com/hot-springs/montana/deerlodge-prison-ranch-springs): 79°F source, Roadside, near Deer Lodge, Powell 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
- [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
- [Boulder Hot Springs, MT](https://www.soakingsprings.com/hot-springs/montana/boulder-hot-springs): 169°F source, pH 8.8, Short Walk, near Boulder, Jefferson County

## Questions

**What is the water temperature at Gregson Hot Springs?**
Gregson Hot Springs has a water temperature of 158°F (70°C). This is considered a hot spring, well above body temperature.

**Where is Gregson Hot Springs located?**
Gregson Hot Springs is located in Deer Lodge County, Montana at 5,137 feet elevation, near Warm Springs. Coordinates: 46.0440°N, 112.8110°W.

**How do I get to Gregson Hot Springs?**
Gregson Hot Springs has Roadside road access (22 ft from the road).

**Can I camp near Gregson Hot Springs?**
Yes, High Rye Cabin is located nearby (3.5 miles away).

**What minerals are in the water at Gregson Hot Springs?**
Water chemistry analysis shows the presence of pH, Calcium, Magnesium, Sodium, Sulfate, Chloride, Iron. The pH is 8.5 (slightly alkaline).

**Is it safe to soak at Gregson Hot Springs?**
No, not at the source. The water at Gregson Hot Springs reaches 158°F, which can cause severe burns within seconds. Look for cooled side pools or downstream stretches, and test with a hand before anything else.

## Sources

- USGS thermal springs records, Water Quality Portal lab analyses, OpenStreetMap, Wikipedia/Wikidata, NOAA climate normals
- https://en.wikipedia.org/wiki/Gregson_Hot_Springs